Removable or Hidden E bike Battery? All You Should Know
Before you buy your next electric bike. there are certain factors you want to consider. Among other factors, e-bike battery is an essential component as it usually determine your bike performance level. However, batteries are in different types and sizes, they can either be removable or integrated, each with its pros and cons. Although many people reduce integrated and removable batteries differences to looks, they have more features. These characteristics can determine if it meets an intending rider’s needs or not.
What are Integrated Batteries?
Integrated batteries are rather fixed to the bike’s frame. Another name for integrated batteries is hidden batteries. The main advantage of integrated batteries is enhanced durability. Since it is mounted within the bike frame, it is not exposed to harsh weather conditions like storms. The battery is also hidden from wetness, which could cause corrosion.
Overview of Removable Batteries
Removable batteries are more commonly seen in modern electric bikes. They can either be a removable front frame or detachable rear rack batteries. The main difference is in the location. As the names imply, the former is located at the front frame, and the latter is at the rear rack region. We place the battery of Honbike HF01 at the middle centre of the bike’s frame.
Benefits of E-bike with Detachable Batteries
Removable batteries are popular nowadays because of their added benefits. Due to the tight schedule in people’s daily activities, they want to move their electric bicycles around quickly. Other benefits of removable batteries are further highlighted below.
Undoubtedly, removable batteries are easy to charge, as users can either choose to charge on or off the ebike. It is the perfect choice for a vacation, picnic, or trip. You can easily take your battery to a charging center without worrying about the extra load of moving your electric bike around. It also helps riders to charge their batteries in their work environment. You simply need to unlock the frame and detach the battery. The battery of Honbike HF01 can be fully charged for about 3.5-4 hours, which is short enough not to cause a delay in your journey.
Contrary to integrated batteries, you can easily replace a removable battery. You do not need any technical knowledge before replacing a battery. As for HF01 users, you can also take an extra battery to double your range As it only weighs 1.26kg. However, you must follow certain safety precautions while removing your e-bike’s battery.
- Insert the key gently into the battery lock.
- Use your other hand to support the battery to prevent it from crashing on the floor.
- Removing the Honbike battery will require you to do it clockwise.
- Once the battery has been successfully detached, pull out the key.
- Fold the stand, and release it back into the compartment.
Cons of Removable Batteries
Removable batteries have a few disadvantages, which are further listed below.
- They are prone to theft compared to integrated batteries.
- Removable batteries are apparent and enormous. However, the innovations ongoing in the ebike industry have yielded light-weighted removable batteries. For instance, the HF01 battery weighs 1.26 kg, a reasonable weight with much flexibility.
Advantages of E-bike with Integrated Batteries
Although removable batteries are popular and more adopted, hidden batteries serve their benefits.
- Most integrated batteries are lightweight.
- E-bikes with integrated batteries are designed to give a streamlined appearance. However, this is not a setback for removable batteries, as manufacturers’ expert level mainly determines an e-bike design.
- Integrated electric bikes are the best option for garage storage since you will have access to a charging point.
- Minimal theft risk since it is not easily removable.
- The batteries require low maintenance because they are not exposed to dirt or dust.
Features to Consider When Buying Ebike Batteries
The critical differences between integrated and removable batteries should help make good buying decisions, but there are other features to consider.
You need to ensure your electric bike has a battery lock that minimizes theft. This helps riders to park their e-bikes at ease without worrying about the bike being stolen. However, this applies if you ride an electric bicycle with a removable battery.
Every removable battery exists in different sizes. Understanding your commuting range will help in choosing the suitable size for you. This will help determine the extra weight you can carry while shopping or riding off-road. Also, the battery is an essential component of an e-bike and can influence its weight. Thus, there is a specific weight for different riders’ body sizes.
The range is also critical in choosing the best battery power rate. For instance, a 300Wh implies that the battery will run down after one hour. Confirm if your battery will survive the range you are riding or not. Meanwhile, the Honbike Uni4 can cover up to 52 miles on a single charge, meeting the daily needs of urban cyclists.
How to Extend your E-bike Battery Life
Battery’s durability varies with quality and brand type. However, a rider’s maintenance proficiency determines how long a battery lasts. If you want your battery to be in good shape for a long time, here are the maintenance processes to implement.
- Avoid using your battery on red: A rider needs to learn to charge a battery before it runs down. When a battery keeps running down, it gets weaker over time.
- Avoid overcharging your battery: Even if you are riding a long distance, overcharging the e-bike batteries is not the best solution. Instead, take the extra fully charged battery while on the journey. Also, you should know your battery’s charging time. If you use the Honbike Uni4, the charging time is between 4-4.5 hours. Whenever your battery is fully charged before this duration, please do not leave it plugged into the socket.
- Do not use a warm battery: Allowing your battery to cool off before usage boosts its longevity. It would help to let it cool off after charging before putting it in the e-bike.
- Proper storage condition: Storing your e-bike battery in an extremely hot or cold temperature could reduce its lifespan. It would help if you did not also expose your battery to harsh weather, such as heavy rainfall. The manufacturer’s manual guide usually states the appropriate storage condition for every battery.
Not every rider can easily identify whether an electric bike has a removable or integrated battery. The positions of the batteries are the easiest way to determine if it is removable or not. Meanwhile, it is not difficult to detach a removable battery from an electric bicycle. The integrated batteries are usually placed in the front region of the frame. In the real sense, integrated batteries can be removed, but you will need some technical tools or equipment. With the differences highlighted in this article, you can decide if you want to stress through removing an integrated battery or not.
Best electric bikes | 15 top-rated ebikes for every type of rider
The best electric bike for you will depend on the type of riding you want to do, so in this guide we’ll cover the whole range of different electric bike types and recommend some of the best we’ve tested.
Electric bikes – or ebikes as they’re commonly known – are bicycles with an electric motor and battery that provides assistance as you pedal. There are many benefits to riding an electric bike. Electric bikes make riding up hills easier and will enable most riders to travel at a higher speed over longer distances without arriving at their destination covered in sweat.
Despite common misconceptions, you can still ride an electric bike for fitness. Electric bike laws limit the power of an ebike’s motor, so you still need to pedal – there’s no twist-and-go throttle here. There is an electric bike for every type of riding. Electric folding bikes and electric hybrid bikes are great choices for cycling to work, the best electric mountain bikes will help you get to the top of the next trail so you can enjoy more descending and the best electric road bikes and electric gravel bikes will enable you to take on longer adventures. Making sense of how an electric bike works and how to choose the right one for you is a daunting task. Luckily for you, BikeRadar’s team of expert testers have put in hundreds of hours riding more than 175 electric bikes across all categories. Our testing is 100 per cent editorially independent, so you can always trust our recommendations. In this in-depth buyer’s guide to choosing the best electric bike for any rider, we’ll talk you through the things you need to consider for each category of ebike. We also highlight the best bikes we have reviewed, as selected by BikeRadar’s expert team of tech editors, for each type of ebike, with links to our detailed buyer’s guide for each category. We also have a general buyer’s guide to electric bike tech at the bottom of this article that answers common questions. For even more information, take a look at our ebike FAQs. There’s a lot to cover here, so use the links below to skip to the section you need, or read on for every detail.
Best electric hybrid bikes
Like a non-assisted hybrid bike, electric hybrid bikes feature an upright riding position, flat bars and stable handling. They’re often the least expensive entry point into ebikes.
With lots of mounting points for accessories such as pannier bags and mudguards, electric hybrids are great if you’re planning to commute to work by bike, ride around town or want to go for leisurely rides on bike trails or through parks.
Electric hybrid bikes can be quite heavy because they tend to use less sophisticated motor systems and the bikes are built for robustness. This is worth bearing in mind if you need to carry them up stairs.
Below is a selection of four of the very best electric hybrid bikes as tested by our senior road technical editor, Warren Rossiter. For more recommendations, check out our full round-up of the best electric hybrid bikes.
Specialized Turbo Vado SL 4.0
- £2,600 / €2,999 / 3,500 as tested
- Pros: Well-tuned power delivery; low weight
- Cons: Lower-torque motor means you have to put in more work
Specialized makes two electric hybrid bike ranges. Whereas the standard Turbo Vado is a heavy-duty ebike, the Vado SL uses a less powerful motor with 35Nm of torque. This reduces the weight to under 15kg, but the flip side is that you have less assistance than with the Turbo Vado, which could be a problem on hills.
The other advantage of the lower output is clean looks, with the concealed battery giving a sporty appearance. Specialized fits lights to all models and includes mudguards and a luggage rack on pricier models.
Canyon Pathlite:ON 5
- £2,499 / €2,699, as tested
- Pros: Great handling and confident off-road
- Cons: Heavy versus its rivals
The Canyon Pathlite:ON 5 is a powerful electric hybrid bike that handles and rides commendably. Our testing found the Canyon’s 100km claimed range to be true, but there’s no denying the bike is heavy at 23.5kg.
Where the Pathlite:ON 5 truly stands out is off the tarmac, where it rivals electric mountain bikes with confidence-inspiring chunky tyres and a shock-absorbing suspension fork.
Tern Quick Haul P9
- £3,100 / 3,299 / AU4995 as tested
- Pros: Great fun to ride and versatile
- Cons: Official add-ons are fairly pricey
The Tern Quick Haul P9 looks like a cargo bike at first glance, but its compact design means it isn’t much longer than a typical electric hybrid.
With the option to fit a huge array of useful add-on accessories both front and back, our tester described the Quick Haul P9 as a “genuinely viable car replacement”.
Best electric folding bikes
Commuters who travel by public transport or are short on space are catered for too. Oliver Woodman / Immediate Media
If you want to cycle to work or are just pressed for space to store your ride, a compact electric folding bike could be the answer.
Folding ebikes often have the battery hidden in their frames, or they may come with a removable battery to make carrying them on and off public transport a bit easier.
A removable battery also means you can take it somewhere where it’s easier to charge (at your desk, for example, if you use the bike to ride to work).
But the extra weight of the motor and battery means carrying a folding ebike on and off public transport, and up and down stairs, will be harder. The available range can be quite limited in some models too.
For more product recommendations, check out our round-up of the best folding electric bikes.
The Brompton Electric adds a front-hub motor to the iconic folder. Russell Burton / Immediate Media
- £2,725 as tested
- Pros: Very compact fold; smooth power delivery
- Cons: Quite heavy; two pieces to carry
A front-hub motor adds electric power to the classic Brompton folding bike, giving you a range of around 40km. The battery sits in a separate pack, which can be removed from the bike for carrying.
Since we tested the Brompton Electric, the standard bike has been redesignated the C Line Explore. It’s been joined by the P Line, which uses lighter frame materials and components to chop almost 2kg off the C Line’s 17.4kg claimed weight.
- £3,999 as tested
- Pros: Larger wheels ride more smoothly; stylish design
- Cons: Expensive; doesn’t fold as small as some ebikes
While pricey, the GoCycle G4 is a folder, commuter and electric bike in one. The ride and handling are far more assured than most folding bikes on- and off-road, thanks to the meaty tyres and larger wheels.
The bike folds in half at its centre, making it easier to roll than to carry and the removable battery in the front of the frame is accessed via the fold. At over 17kg, it’s quite heavy though.
MiRider One GB3
The GB3 is an upgrade on the original MiRider One, with an accompanying price rise. David Caudery / Our Media
- £2,495 as tested
- Pros: Very compact
- Cons: Price has increased significantly from the original bike
The MiRider One GB3 is an upgrade from the original model we tested a few years ago. Unfortunately, that’s resulted in a significant price hike, but the ebike is still a compact, nippy city commuter.
The belt drive is cleaner and lower-maintenance than a chain, there’s good adjustability, and built-in rear suspension and wide tyres add comfort.
The GB3 design has three speeds, adding flexibility over the singlespeed predecessor, and you can change gear while stationary. We achieved a range of up to 50km.
Best electric mountain bikes
Electric mountain bikes can be great on the climbs, but handling on the descents can take a bit of getting used to. Ian Linton
An electric mountain bike will get you to the top quicker, particularly on technical, steeper climbs, and with more energy to enjoy the descents. Plus, getting up the ups more easily will give you extra range to explore further.
Recent improvements in eMTB performance mean handling is approaching that of the best mountain bikes without a motor, providing heaps of flat-out riding fun.
But, nevertheless, the extra weight can make handling more tricky on particularly technical sections, so it’s a good idea to ease off a bit until you’ve got the feel of the bike
This is a small selection of the best electric mountain bikes we have tested, as selected by our expert team of mountain bike tech editors, Alex Evans, Robin Weaver and Tom Marvin.
Vitus E-Sommet VRX
For the money, the E-Sommet has to be one of the best electric mountain bikes out there. Ian Linton / Our Media
- £5,499 as tested
- Pros: Quality spec; great geometry and suspension
- Cons: Awkward cable routing and bottle placement
The Vitus E-Sommet adds a powerful Shimano EP8 motor and large-capacity battery to Vitus’ enduro platform. It rolls on a 29in front and 27.5in rear wheel mullet build and is impressively specced for its price, with a 170mm RockShox ZEB Ultimate fork, a Super Deluxe Select RT shock and Shimano’s XT groupset.
The E-Sommet descends and climbs impressively, with both comfort and great grip, making it fun, engaging and highly capable.
Marin Rift Zone E2
- £5,895 / 6,299 / €6,899 as tested
- Pros: Lively; great spec
- Cons: Slightly over-geared; less powerful motor than its competitors
The Marin Rift Zone E2 is a classy, comfortable full-suspension electric mountain bike with 140mm travel. It can take you beyond its trail riding mandate, handling more technical descents well.
The Rift Zone ebike is well specced for its price, although the Shimano EP801 motor’s 85Nm torque is a little less than competitors. We’d have preferred a smaller chainring than the 38t fitted for easier climbing.
Whyte E-160 RSX
- £7,999 as tested
- Pros: Calm and composed handling; hides its weight well
- Cons: Some chain slap; seat tube too slack for optimal climbing
The Whyte E-160 RSX is a well-equipped enduro bike, with its battery mounted below the Bosch motor to lower its centre of gravity.
Whyte says the full down tube this allows improves torsional rigidity as well. Lower-spec E-160s are available in both 29in and ‘mullet’ form, so you can pick your preferred wheel configuration, although this top-spec model is 29in only.
Despite its 26kg-plus weight, we found the low centre of gravity made for impressive downhill performance, although we’d have liked to see a slightly steeper seat tube for better climbing.
Best electric road bikes
It’s often hard to tell many electric road bikes from their unassisted counterparts. Russell Burton / Immediate Media
If you enjoy road cycling, but want a bit of help to keep your speed up or to get you up hills, an electric road bike could be the right choice for you.
Most e-road bikes use lightweight motor systems that provide less power than the motors used on electric hybrid or mountain bikes. This means they’re typically a bit lighter too, with the very lightest models tipping the scales at around 11kg.
However, with many road riders achieving speeds on the flat of 15mph or above, you may feel you’re carrying dead weight around, with the motor cutting out at that top-assisted speed, although assistance can continue to 20mph, or even in some cases 28mph in much of the USA.
Below are three of the very best electric road bikes senior road technical editor Warren Rossiter has tested to date.
BMC Roadmachine AMP One
- £7,600 / €7,999 as tested
- Pros: Smooth ride; compact motor; impressive range
- Cons: Tyres may need a swap-out for colder, wetter conditions
The BMC Roadmachine AMP One doesn’t look much different from its non-assisted sibling; it’s only the slightly expanded down tube, hiding a 350Wh battery, that shows there’s extra assistance. The Mahle X20 motor is so compact it hides between the largest cassette sprocket and the disc rotor.
The ride feels like the non-assisted Roadmachine as well, despite the 12kg weight. Range is impressive, heading up to 160km, depending on the conditions. We’d swap out the tyres for winter use though.
Scott Addict eRide Premium
The Scott Addict eRide Premium looks and rides like a racy road bike. Russell Burton / Immediate Media
- £8,349 / 9,299 as tested
- Pros: Great looks; top-spec build; lovely handling
- Cons: Non-removable battery
The Scott Addict eRide Premium has similar geometry to the Scott Addict RC Disc and the same carbon frame. The result is a possible sub-11kg build powered by the consistent ebikemotion rear-hub motor.
Neatly concealed in the down tube, the battery managed 100km and 2,000m elevation in testing. The 2022 version of the bike has been renamed as the Scott Addict eRide Ultimate.
How to Charge an E-Bike for Maximum Battery Life
From safe charging to the longest possible lifespan, here’s everything you need to know about your electric bike’s power source.
If you bought a bike in the last couple years, chances are good it’s an e-bike. Electric bicycles are the fastest-growing type of bike in the U.S. today; in 2021 they surpassed road bikes as the third biggest category of bikes overall and in 2022 e-bike sales were over 800 million. E-bikes still outsell electric cars, and for good reason. The lightweight electric motor on an e-bike gives a powerful boost to all kinds of riding, especially utility cycling like commuting and errands. (Plus, there is a nice tax incentive for some e-bike riders.)
At the heart of that system is a powerful lithium-based battery. Taking proper care of that battery and knowing how to properly charge it is key to safely getting the best range and long-term battery life. Here’s what you need to know about charging your e-bike battery.
Safe charging basics
You should charge your battery inside, on the proper charger, and with the motor system powered off, says Kunal Kapoor, senior manager for quality and compliance at Bosch, a leading supplier of e-bike motor systems. While e-bike motors, batteries, and wiring are weather-resistant, “chargers aren’t intended for outdoor use,” he notes.
Using the proper charger is primarily a safety issue. With a modern lithium battery, Kapoor continues, when the battery signals it’s ready to accept a charge, “the battery monitoring system in the charger makes sure that the temperatures inside the battery are optimum to receive the charge,” and shuts off if needed. An off-brand charger—even rated to the same output—doesn’t have all the features of that battery management system, so current can flow to the battery even if temperatures rise, which is a fire risk.
The risk of battery fires is low, but Kapoor recommends people not leave batteries unattended while charging. You can leave the battery on the bike to charge or take it off, as long as it’s not sitting on or near flammable stuff (like the spare gas can in the garage, for example). If you’re looking at lower-priced e-bikes with house-brand or unbranded motor and battery systems, make sure the battery and charger carry a UL 2849 certification stamp from Underwriters Laboratories. This is the industry-wide standard for safe electric systems and battery charging for e-bikes. Some bike shops won’t work on e-bikes with motor and battery systems that lack this stamp, citing fire risk when left overnight in the store.
How to optimize battery range and lifespan
Let’s start with some definitions. Range is essentially runtime: how long a battery will last on a single charge, expressed in miles of riding. Range, even on the same bike, will vary; a flat commute to the office with just a light backpack will see better range than a fully loaded uphill ride home from Costco. Most e-bikes today get between 25-75 miles of range, depending on these factors.
Lifespan is how many times a battery can be discharged and recharged before it starts to lose significant capacity. When capacity starts to dip, you won’t notice less power while riding, but you will see range start to shrink. A common lifespan benchmark for e-bike batteries is 500 “full” discharge/re-charge cycles (if you use half the battery capacity and recharge, that’s half a cycle), which works out to about three to five years of normal use before capacity begins to drop noticeably.
Even though battery range and lifespan aren’t the same thing, they are linked, and actions that reduce range will also, over time, shorten lifespan. A big culprit, Kapoor says, is running the motor hard, like leaving it in Boost or Turbo mode all the time, which means a ride of a given distance relies progressively more on motor power than at lower assist levels. You’ll run the battery through charging cycles more quickly, which will shorten its life.
A less-obvious factor that strains motors and batteries is pedal cadence. Most e-bike motors are optimized for efficiency around a 70-90 rpm pedaling cadence. You can lower efficiency by pedaling too fast (Bosch motors, for instance, max out at 100-120 rpm depending on the system). common is sub-optimal efficiency from pedaling too slowly in a large gear. This is the same as “lugging the engine” in a car; whether gas or electric, the motor works harder. “Choose your gears wisely,” says Kapoor, to stay in that 70-90 rpm sweet spot.
Mistakes that kill your battery
When you buy a new e-bike, you should charge the battery to full before riding it because it’s likely been inactive for a while. But lithium batteries do not have “memory;” that is, they do not need to be fully discharged and fully recharged every time to hold their full capacity. In fact, it’s best if you don’t run a battery to zero, says Kapoor. “If you let the battery deplete completely, that may permanently damage it,” he says, and it will never recharge to its full original capacity.
If you’ll go a few weeks or more without riding the bike, store it (or at least the battery) in a dry, room-temperature space with the battery between 30-60 percent of full charge, says Kapoor. That’s the most stable level for long-term storage, and will lower the chance of a deep discharge that would damage your battery. Don’t leave your battery plugged in to the charger for long periods. It’s not necessary, and can create a short discharge/recharge cycle that will eventually reduce capacity. If you go long periods without riding the bike, check the battery charge monthly and partly recharge when it drops below 30 percent.
Lithium batteries are less affected by cold weather than other types of battery and you shouldn’t see reduced range while riding unless the temperatures are truly arctic. But researchers at the Department of Energy recently found storing lithium batteries below freezing for longer periods can damage part of the battery’s cathode, which will reduce its capacity. Lithium batteries also won’t charge effectively in cold temperatures. If you store your bike outside or in an unheated space and live in an area with sub-freezing temps, says Kapoor, bring the battery inside when not in use.
Also, keep your battery protected from extreme heat, like sitting next to a sunny window or a hot car. Excess heat can raise battery temperature enough to damage its components; in an extreme situation, it can contribute to what’s called thermal runaway, where a battery enters an unstable, uncontrollable self-heating state that can result in fire.
You don’t need to recharge after every ride. Topping off your battery sounds Smart, but over time it will reduce capacity more quickly. If you get 50 miles of range from a charge and ride 10 miles a day, you only need to recharge every three to four days.
When it’s time to replace
Even if you take great care of a battery, over time it will lose capacity. You’ll notice this on your bike’s range estimate on the controller unit. Capacity is a primary indicator of the health of a battery, so if you notice your range dropping to 70 percent or less of what it was when your bike was new, that’s a sign to start planning a replacement. If your battery is less than two years old and is well under original capacity, it might be a warranty claim (terms vary by manufacturer).
If it’s not a warranty issue, the decision on when to replace is personal preference, says Kapoor. “If you got 50 miles (of range) out of the battery originally and let’s say now you get 40, I wouldn’t classify it as ‘end of life’ if you can live with that 40-mile range,” he says. A battery with reduced capacity should still be safe, Kapoor adds.
Always purchase a name-brand replacement for your battery. Just as batteries and chargers should be paired, batteries and motors are designed to work together. And, says Kapoor, never try to repair a damaged battery or let someone else do it. Despite guides that claim you can, this is not just corporate greed or legal butt-covering by manufacturers. While e-bike batteries are almost always made from standard 18650 cells that are widely used in various products (even electric cars), those cells have a variety of different chemistries, capacities, and amperages, and that’s before we even get into connecting a string of them and repackaging the battery in the housing. The slightest mistake in any of that increases fire risk. If you need a new battery, just buy one.
Dealers that sell your brand of bike can order you a direct replacement for that bike or motor brand. Costs vary depending on battery size and brand, but plan on spending 400-800 for a new unit.
A dealer can also recycle your old one. A new program from Call 2 Recycle offers free e-bike battery recycling (paid for by bike and motor brands) through partner shops in almost every major city and many smaller ones. No participating dealers near you? Request an easy DIY shipping kit online.
Why recycle? Even a spent battery contains raw materials that can be re-made into fresh ones, at moderately less energy cost and less environmental damage than producing from virgin materials. Spent lithium batteries also have a fire risk in landfills and can leach toxic metals and other chemicals into the soil and air.
In case of fire
Though rare, battery fires do happen. If your battery gets hot to the touch while charging, unplug the charger from the wall immediately. If you can, put the battery in a metal container like a bucket (better yet, one filled with sand) away from anything flammable.
But if it’s not safe to handle, call 911 right away and tell the dispatcher that you have a lithium battery fire, which requires different firefighting methods than conventional fires. Don’t pour water on a battery fire; water and lithium react to produce hydrogen, which is highly flammable. A standard fire extinguisher may help, but in the event of a fire, special tools may be needed.
Replacement Electric Bike Batteries Guide
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A good e-bike battery should last for hundreds of cycles. With average use, this means several years. Eventually, electric bike batteries need to be replaced as their life cycle comes to an end.
You can tell when a battery is nearing the end of its life when it does not provide you with much range. Some high-quality batteries that come on the top e-bikes such as a Bosch battery have a battery management system (BMS) integrated into the battery that actually tells you the current capacity and also how many charge cycles it has gone through.
But no matter what type of battery you have you’ll sooner or later be asking yourself the all-important question: how can I replace my e-bike battery?
Down below Electric Bike Report dives into this question and more in greater detail.
Are E-bike Batteries Interchangeable?
In general, the answer is no – you should only replace a battery with one that comes from the same manufacturer and is of exactly the same spec.
The reason is that the original e-bike or kit manufacturer has the responsibility to ensure that the battery pack, charger, and e-bike all work safely together, and using a ‘non-original’ replacement pack potentially introduces all sorts of uncontrolled risks.
It’s a little more complicated than this in some situations. For example, some Bosch batteries of different capacities are explicitly made to be interchangeable and there will be many instances where an original supplier and/or manufacturer of the e-bike cannot be traced or has gone out of business – in such cases we look at your options below.
As an important side note: you should always, if possible, use a charger that comes from the original manufacturer too. The one that comes with your battery should sync up well and not overload the battery. Pairing your battery with a different charger adds in risk of malfunction during charging.
Let’s first look at the basics of getting a replacement battery for your e-bike, then we will look at some of the major manufacturers of e-bike batteries and some of the main e-bike manufacturers to see which common battery types are still replaceable. Let’s consider the options for replacement in terms of desirability.
Where Should I Go to Get a Replacement E-Bike Battery?
On this last point it may help to note that there are a couple of manufacturing standards for rechargeable lithium-ion batteries used in e-bikes. Although it’s not a legal requirement, it may be that one of the standards is actually marked on the battery itself.
The standards are BS EN 50604‑1 and UN38.3, the latter required for lithium-ion battery transport by air, sea or land. Just because these standards are not marked on a battery doesn’t mean it does not comply with them – but it is a reassuring sign if a battery does bear one or both of these marks.
Note that using a replacement battery that does not come from the original manufacturer (whether a dealer is involved or not) may void the warranty of your electric bike or kit. Check with the e-bike or kit company to understand what their policy is regarding the use of aftermarket replacement batteries.
Replacement Batteries from Original Manufacturers
Bosch E-Bike Batteries
Only Bosch manufactured batteries will be used on any new Bosch e-bike – this has always been the case and so it makes advice on interchangeability a little more straightforward than with the likes of Shimano and Brose who have both allowed the use of third party batteries with their mid-drive motor systems.
There have been four basic designs made by Bosch over the years (good online overview here):
- Rack mounted batteries: PowerPack in 300, 400, and 500 Wh versions which are all interchangeable with each other.
- Down tube mounted batteries: PowerPack in 300, 400, and 500 Wh versions, current versions of which are all interchangeable with each other.
- Frame integrated batteries: PowerTubes in 400, 500, and 625Wh versions, with the 400 and 500 units being interchangeable with each other. The 625Wh may be retrofittable but it needs a compatible frame with a big enough space to house it (400 and 500 units are the same physical dimensions but 625 is bigger). 500 and 625 Wh units are used on the Dual Battery system to give a capacity up to 1250Wh.
- Frame Integrated ‘Smart’ Option batteries: This is a new 750Wh option for 2022 and will be only compatible with 2022 e-bikes that feature the Bosch ‘Smart’ system and will not be compatible with other Bosch e-bikes that are ‘non-Smart’. Similarly, other types of PowerTube batteries (400, 500, and 625Wh versions) will not be compatible with e-bikes featuring Bosch’s ‘Smart’ system.
Some third-party batteries compatible with Bosch systems are available as detailed in the section below.
There are some suppliers of batteries that will fit older models, in some cases dating back to 2011 when the Bosch e-bikes first entered the market, for example, The Holland Bike Shop in Europe sells some batteries compatible with much older Bosch-powered models.
Shimano E-Bike Batteries
Shimano produces its own brand batteries for use on their systems, but you may also find new e-bikes powered by Shimano motor systems with batteries manufactured by their licensed partners Darfon and SMP. These third party batteries are not interchangeable with any Shimano batteries.
Shimano’s current range includes rack-mounted, downtube-mounted and frame-integrated batteries from 418Wh to 630Wh. You can see a brief overview with detailed links to each battery on offer here.
It’s important to note that each battery model has a limited number of specific battery mounts it will work with, so it is important to replace an old battery with one that is compatible with the mount on your e-bike. You can check out detailed compatibility info here and here.
Shimano says that ‘the oldest current battery we have is the BT-E6000 and the corresponding battery mount BM-E6000. These are compatible with all five of our current drive units (DU-EP8/E8000/E7000/E6100/E5000), but not earlier systems. For reference, DU-E8000 is the oldest in that list – it was introduced in 2016.’
Brose E-Bike Batteries
The only battery listed on Brose’s own website is a 630Wh frame-integrated option.
However, Brose systems are widely used by other manufacturers who also spec own-brand or third-party batteries. These include the likes of the widely respected battery manufacturer BMZ and well-known brands like Scott and BULLS.
For example, Specialized’s ‘full power’ range use Brose-based mid drives and a range of their own brand frame-integrated batteries. Although information on interchangeability is scarce, a Specialized FAQ page, in response to the question ‘Can I increase range by using the 604Wh aftermarket battery in any Turbo Vado/Como?’ says yes, all Vado batteries are cross-compatible as long as you are running the latest firmware (by implication so are Como and Turbo full power batteries are cross-compatible too).
The above appears only to address compatibility on current Specialized models and battery availability for older models appears a bit more complex with lots of debate online over the matter.
The fact that the latest Specialized e-bike batteries contain a Bluetooth chip to communicate with the latest Mission Control App certainly suggest both backward compatibility and availability of third party batteries will be very limited. Current e-bike batteries available from Specialized can be found here.
Yamaha E-Bike Batteries
Yamaha has integrated, rack-mounted and frame-mounted options ranging between 400Wh and 600Wh but information on backward compatibility is rather hard to find. Their systems appear on Haibike models and in the US on their own brand models too.
Giant use Yamaha motor systems but apparently have their own brand of battery – the EnergyPak range. The standard EnergyPak comes in rack-mounted and frame-integrated options whilst the Smart Compact variant allows for faster charging.
Finally, there is the Giant EnergyPak Plus, for use with the Smart Compact – a range extender style battery that fits onto the frame and effectively increases the capacity of the main Plus battery.
Giant’s Service web page states that there are EnergyPaks with 300, 360, 400, 500 and 625Wh capacities and also states ‘Giant EnergyPaks are interchangeable’.
Fazua E-Bike Batteries
This lightweight German-made system uses a frame-integrated 250Wh design and there have been two types of battery, Battery 250 and Battery 250X, the latter having the ability to be switched on and off remotely.
The latest Fazua Evation 250X battery is compatible with all Fazua electric bikes from 2019-22.
GRIN and Cytronex E-bike Kit Batteries
Canada’s GRIN is a true expert in producing a wide variety of e-bike kits. Whilst they do several designs of batteries, one of their best options from a replaceability point of view is their own brand LiGo batteries.
LiGo batteries are very unusual in being modular so that you can easily connect together as many as you like to increase or decrease battery capacity at will. They are particularly suitable for lightweight and folding bikes (I use them on a GRIN Brompton kit) and also for those who want to air travel with e-bikes as the individual battery units are only 98Wh and so are generally allowed on passenger aircraft (disconnect them from each other for travel and reconnect them on landing to make a useful e-bike battery).
The design has been around for several years and is backward compatible.
The UK’s Cytronex produces both European and US spec lightweight kits which use a unique own-design of ‘bottle battery’.
Cytronex says all their lithium bottles are compatible forwards and backward from the first version in 2017. They have different firmware for the new Bluetooth variant but both this and the non-Bluetooth version allow you to use the new 2-way – 5 level Boost Button or the previous one-way 3 level button.
In fact, if you have old and new kits on two bikes you can switch the bottle between both and it will recognize the two different button types automatically.
E-bike Manufacturers Own Brand Batteries
There are hundreds of e-bike manufacturers in the more budget space so it’s way beyond the scope of this guide to cover the options for each one; rather we’ll take a look at a couple of the market leaders.
Rad Power Bikes E-Bike Batteries
Rad Power Bikes first started producing e-bikes for the North American market in 2015 and now claims to be the US market leader. Their website lists several replacement batteries and their current lineup of bikes uses one of two battery designs.
There is the External Battery Pack (with the option for the smaller pack specific to the RadMission) which is compatible with all 2018 and newer model ebikes except the RadRover 6 Plus and RadCity 5 Plus, which use the Semi-Integrated Battery Pack.
Rad Power Bikes does offer legacy options for bikes older than that 2018 ‘cutoff’ and although some of these legacy batteries are currently out of stock Rad says they have plans to restock them.
The battery packs are consistent across their main sales areas of Canada, US and Europe.
The Rad Power website has a great filter system so you can track down the compatibility of what batteries are in stock against all current and previous models, right back to the original 2015 RadRover. All e-bike manufacturers’ websites should provide this service!
Pedego E-Bike Batteries
A longstanding US manufacturer with a clear set of battery specs for current models here. However, there doesn’t appear to be any info about legacy batteries or backward compatibility.
Interestingly, and it seems uniquely amongst the mainstream manufacturers, Pedego have recently introduced a serviceable battery (pictured above) – designed to be easily maintained at the local Pedego store. It features a rear light, brake light and indicators to boot.
Batteries for Out-Dated Motor Systems
There are a number of older motor and battery systems that are either not used or little used these days but there are still some suppliers out there who may be able to help out and if you are in this position a bit of internet research might just turn something up. Let’s take a look at a couple of examples.
BionX E-Bike Batteries
BionX operated between 1998 and 2018 and were once one of the leading e-bike system manufacturers in North America, with the likes of Trek and Kalkhoff using their systems.
There are still limited stocks of spare parts available here and there, including batteries, for example on this Ohm webpage.
Heinzmann E-Bike Batteries
German company Heinzmann had a great reputation for quality and produced the now obsolete Classic system and the newer Direct Power system. At various times both were available as kits or fitted to off-the-peg e-bikes.
In the UK Electric Vehicle Solutions are the main stockist of complete Direct Power kits and of spare parts for the Classic system.
What About Non-removable Frame Integrated Batteries?
A relatively small number of e-bike batteries are incorporated into the frame and not designed to be removed by the rider – they must be charged on the bike. Whilst perhaps inconvenient for some, the system has the benefit of a sleeker and simpler design and keeps the battery cells well-protected.
The Ebikemotion X35 system is one example of the most common lightweight systems out there to feature a frame-enclosed battery.
When it comes to replacing these batteries, to be clear, our official advice is that this is a job for the dealer, or expert shops to do only.
DIY in this area can get tricky in a hurry. Looking into service options to replace batteries in an integrated system is something to consider before purchasing the bike.
Third-Party Replacement E-Bike Batteries
For some older batteries – or even some current ones – there may be manufacturers other than the so-called OEMs (original equipment manufacturers) who made the original batteries. These third-party companies are not recognized by the original e-bike manufacturers so if possible it is always best to go back to your dealer or the manufacturer directly to source an original battery.
However, third-party batteries may be a solution where no original batteries appear to be available.
There are a growing number of companies that provide third-party batteries and here we take a look at a couple of the bigger operations.
Please note that on e-bikes that are still in their warranty period, replacing the battery with one from a third-party manufacturer will most likely void the warranty.
FTH Power has a good amount of experience in the electronics business and has diagnostics and assembly capabilities. They look to have good stocks of popular far eastern battery brands such as Reention (used by the likes of Juiced and Surface 604) and Hailong. They also have this handy battery/model finder to see if they have batteries for your particular model of e-bike.
Third-party battery provision (and recelling services) appear to be bigger business in mainland northern Europe than in the U.S. It makes sense, this is where e-bikes have been around much longer and where the average value of e-bikes is higher. The need to keep older bikes going longer is greater. For example, Heskon is a major supplier of replacement batteries to dealers and Fiets Accu Revisie is the part of Heskon that sells direct to customers.
The UK’s Electric Transport Shop network offers battery diagnosis (refundable against a replacement battery or recell if required). The ETS says they also have stocks of Battery Management System chips that can be used on certain packs, usually on older e-bikes.
The ETS also says ‘There are so many shapes of e-bike batteries now that we cannot guarantee that we have cell packs to fit them all and it is usually cheaper to buy a factory-built replacement than to hand-build a replacement pack in the UK so we usually recommend buying a battery from the original supplier if the diagnosis proves that’s what is needed. If their supplier is no longer available to supply a replacement pack in this instance we will help people find a suitable replacement or as a last resort we will offer to wire in an alternative pack which may be in a different position on the bike.’
What Should I Do With My Old E-bike Battery?
If at all possible the ideal solution is to take it back to the dealer you bought it from who will send it on for recycling.
In the US the industry is in the midst of setting up its own recycling scheme. It was organized by People for Bikes and will be directly coordinated under the auspices of Call2Recycle. There will be a network of battery drop-off locations from the nation’s roughly 3,000 independent bike shops. Manufacturers and retailers can sign up here.
The batteries will be sent on to ‘processing partners’, four of which are domestic and two of which are foreign—one in South Korea and one in Belgium.
The consortium brands are funding the recycling service, which will be free to riders; of course, consumers will still have to pay for replacement batteries. There are also plans for a consumer-direct mail-in recycling option in the summer – EBR will keep you posted on its development.
There are already such ready-made recycling networks in mainland Europe and the UK is just beginning to establish such a network.
This guide to replacement electric bike batteries hopefully covered the basics of what is out there for you. It’s certainly just the tip of the iceberg though. If there is anything else that wasn’t covered here, let us know in the Комментарии и мнения владельцев below and we’ll update this guide with the info our readers are looking for!
Taking Care of Your Ebike Battery
Your ebike relies on one main thing to power everything from the motor to its LED digital display, the battery, so it’s important you do everything you can to take care of it. Replacements can get expensive and you want to avoid as many problems as possibly. Follow the below steps in order to properly take care of your ebike battery so you can enjoy each ride you take to the fullest.
Manage Ebike Charge Level
GOTRAX’s ebikes come with lithium-ion batteries rated for up to 1000 charge cycles. That means you can charge your battery from 0 to 100 percent, 1000 times. Additionally, if you use only 25% of your batteries charge and then plug it in to charge that would only count as 1/4 of a charge cycle. You’d have to do it three more times at the level for it to count as a whole cycle. In order to maximize these cycles, it is important to not overcharge or overly discharge the battery. This is done by keeping your battery charged between 20-90% regularly. You can avoid overcharging by setting a timer on your smartphone an hour or two after plugging it in.
Not only does this help increase the lifespan of your battery but it promotes proper charging practices. Charging after your battery reaches 100% and hitting absolute zero puts unneeded stress on your battery so avoid a full charge/full discharge as often as you can. Finally, be sure to take the battery out of the bike every month or so to inspect it. GOTRAX’s F-Series and CTI Series ebikes all feature a easy to remove battery for your charging convenience.
Proper Ebike Storage
Sadly, you can’t ride your electric bicycle 24/7 and will have to hop off it eventually. When you do, it is imperative to store it in a cool, dry space ideally between 40-90 degrees Fahrenheit. Our removable batteries make this a bit easier to manage since you can just take the battery with you most places and not have to take the entire ebike with you. We also don’t recommend leaving your electric bike in your car, especially in direct sunlight. The temperature can drastically increase in less than an hour under said conditions so take your battery with you when you can.
Furthermore, avoid moisture whenever possible. All GOTRAX electric bikes come with an IPX4 rating or higher so they can handle light splashing and rain but it is best to avoid downpours as well as large storms. This also includes when your ebike is not in use. Dry and moderately warm temperatures are best.
Limit Throttle Only Use
Throttle only will reduce the total range you can get on a single charge and puts more of a workload on the battery along with the motor. Our pedal assist technology exists for a reason, so please utilize as often as you can. We’re not saying never use throttle only, it is an incredibly fun, fast way to get around but you’ll never get the same range as someone who uses the pedal assist. Ride responsibly, manage your battery and how you use it. That is all there is to it.
Ride Together. Ride GOTRAX!