Everything you need to know about e-bike batteries from a battery engineer…

How Many Miles Does an Electric Bike Battery Last?

It seems like electric bikes are popping up everywhere these days. And for good reason! They’re a great way to get around without all the hassle of a traditional bicycle. But one of the big questions people have about electric bikes is, how long do the batteries last? We did a little research and here’s what we found.

On average, most electric bike batteries will last between 25 and 60 miles before they need to be recharged. However, there are a few factors that can affect this number. For example, terrain, the weight of the rider, any accessories or additional bags, and weather conditions can all play a role in how long the battery will last.

Another thing to consider is how fast you’re going. If you’re pedaling at high speeds with pedal assist on the highest level, the battery will drain faster than if you’re cruising along at a nice leisurely pace. The same goes for hilly terrain; going up hills will use more power than riding on flat ground. And of course, if you have any accessories like lights, bags or racks attached to your bike, that will also drain the battery faster.

So, what’s the best way to make sure your battery lasts as long as possible?

Consider Your Speed The Terrain

When it comes to electric bikes, one of the biggest concerns is battery life. After all, no one wants to be stranded halfway through their commute with a dead bike. Fortunately, there are a few things you can do to extend the life of your battery. One is to avoid pedaling at high speeds or going up hills whenever possible. Instead, take it easy and keep a steady pace. This will help to conserve energy and prevent the battery from overworking. Another tip is to charge the battery regularly, even if you don’t think it needs it. This will help to ensure that the battery stays healthy and lasts for as long as possible. By following these simple tips, you can help to extend the life of your electric bike’s battery.

Keep Your Bike As Light As Possible

When it comes to electric bike batteries, one of the most important things to consider is weight. Heavier bikes require more power to maintain speed, which can drain the battery more quickly. Conversely, lighter bikes are more efficient and can go further on a single charge. Therefore, if you want to extend the range of your electric bike, it’s important to keep it as light as possible. This means removing any unnecessary accessories and carrying only the essentials when you ride. By following these tips, you can minimize battery drain and enjoy a longer ride.

Keep It Clean

One of the best ways to prolong the life of your electric bike’s battery is to keep it clean. Over time, dirt and grime can build up on the battery terminals, which can lead to corrosion. Corrosion can prevent the battery from charging properly or cause it to discharge prematurely. To prevent this from happening, use a soft cloth to wipe down the battery terminals on a regular basis. If you see any signs of corrosion, use a wire brush to remove it.

Store It in a Cool, Dry Place

When you’re not using your electric bike, it’s best to store the battery in a cool, dry place. Extreme temperatures can damage the battery and shorten its lifespan. If you live in an area with extreme temperatures, consider investing in a battery storage case. These cases help regulate the temperature around the battery and protect it from damage.

Charge It Regularly

Another good way to prolong the life of your electric bike’s battery is to charge it on a regular basis—even if you’re not using it. Batteries self-discharge when they’re not being used, so if you let them sit for too long without charging them, they can become damaged. To prevent this from happening, charge your battery at least once every few months.

Avoid Running It Completely Dead

It’s also important to avoid running your electric bike’s battery all the way down before recharging it. Every time you do this, you shorten the lifespan of the battery just a little bit more. So, if you want your battery to last as long as possible, make sure to recharge it before it gets below 20%.

If you have any questions about electric bikes, don’t hesitate to contact us. If you’re looking for more information on choosing the best e-bike for your needs, We created an e-bike guide to help break down the many e-bikes you can choose from. At Ultra E-Bikes, we’d love to introduce you to the world of electric bikes and show you how much fun and enjoyment you can get out of owning one.

Everything you need to know about e-bike batteries [from a battery engineer]

Would you be the person taking the stairs or the escalator?

I’ll be honest. barring the one-off day that I’m feeling particularly sprightly, I would just hop on the escalator with those 30 people on the right. And I’m willing to guess that most of you would too.

What we can gauge from this picture is that most people would rather do as little work as possible to get from point A to point B. This is especially true when it comes to commuting on a bike. The picture above is analogous to the difference between a regular bike and an e-bike.

Even if we address all the concerns when it comes to biking in a city (like safe biking infrastructure), we can’t expect to change fundamental human behavior. when given the option between less work or more work to achieve the same outcome, people will more likely choose to do less work.

Since getting my e-bike, I can comfortably bike from my home in Somerville to the Seaport district in Boston. a roughly 5-mile trip. in just about 20-minutes. All of a sudden, biking 5-miles is a piece of cake. I also don’t have to spend time sitting in traffic, waiting for public transit, or worry about showing up to a meeting looking like I swam across the Charles river to get there.

The beauty of an e-bike is that it makes cycling an inclusive mode of transportation because it doesn’t discriminate by age or physical ability.

When it comes to purchasing an e-bike though, there are a plethora of options for both the bike and battery. So how do you decide which one is best for your needs? As a battery engineer who has built hundreds of batteries and logged way too many hours soldering battery packs, here are my thoughts on the most commonly asked questions when it comes to e-bike batteries.

If you’re new to battery terminology, you might want to start here: Battery terms that every e-bike owner should know.

In this post, we’ll cover the following questions:

What is the best e-bike battery?

This is one of the hardest questions to answer. There are so many variables that go into what makes a good battery and what’s best for you, may not be the best for me. Even then, a good battery can perform poorly if it’s not cared for properly.

Battery packs are made up of individual battery “cells”. Cells are classified into cylindrical cells (like your AA and AAA) and prismatic cells (like the one in your phone). Each class of battery is manufactured in a variety of form-factors (in the battery world we use this term to mean size). The most commonly used form-factor of cells in an e-bike battery pack is the 18650.

A battery pack is only as good as it’s weakest cell.

When it comes to batteries, in my experience, there is a strong correlation between price and quality. I don’t follow this rule when it comes to most things like for example, box wine (I’m just saying, there are plenty of really good box wine options these days!). When it comes to batteries though, you really don’t want to be compromising on quality because you’ll eventually end up having to pay the price.

Here are some things to keep in mind when purchasing an e-bike:

Cell Manufacturers: Panasonic, LG, and Samsung have a good reputation in the battery industry for their high quality cells, so paying a premium for these cells is certainly worth it. If the e-bike you’re trying to buy doesn’t have or provide cell manufacturer information, they’re likely not going to be a reliable source anyway.

Cell Chemistry: Lithium-ion (li-ion) batteries are the best option for e-bikes. Although lead-acid batteries are significantly cheaper, they’re three times as heavy as their li-ion equivalents.

Li-ion has several variants of cell chemistry. The most popular ones for e-bikes are Nickel Manganese Cobalt (NMC), Lithium Cobalt Oxide (LCO), and Lithium Iron Phosphate (LFP). The metrics to look for when selecting a cell chemistry are:

  • Specific Energy: has an impact on the range of your battery.
  • Specific Power: how the battery handles high load scenarios like going up
  • a hill.
  • Safety: does the chemistry have a history of high in-field failures.

There are trade-offs when choosing one chemistry over another, but as we’ve shown in the image below, NMC and LFP are both great options that both offer the best value in terms of performance, price, and safety.

Picking the right battery chemistry has to do with figuring out what matters most to you. Do you want a battery that has a longer range (higher specific energy) but doesn’t have as much power? Or do you want a battery that has a more power (higher specific power) but may not last as long?

In my opinion, the best e-bike batteries are likely going to be made from cells manufactured by Panasonic, LG, or Samsung with either LFP or NMC cell chemistry.

What is the range of an e-bike battery?

The range of a battery pack depends on the amount of energy packed inside of it and is measured in Watt-Hours (Wh). Watt?

Watt-hours are calculated by multiplying the battery capacity, in Amp-hours, by the battery Voltage, in Volts.

Let’s assume that, on average, 1-mile requires about 25Wh of energy. So a 14Ah, 36V battery should get you about 25-miles per charge.

Keep in mind that the weight of the rider, outside temperature conditions, and the amount of pedaling will make a significant difference in range.

A word of caution: the range that e-bike manufacturers provide should be taken with a grain of salt. That number is generated from tests that are run in perfectly tailored lab conditions. Do you charge any of your electronics in an incubation chamber set at 28° C with a lab-grade charger that applies the perfect current while charging? Yeah, I don’t either. And so, We should assume that the manufacture-specified range is delivered only if the battery is charged and discharged under ideal conditions i.e. not real world conditions.

For a more realistic estimate, shave off 15% of the manufacturer specified range and assume this padded number to be your real range.

If you’re looking for a longer range, choose a battery that has higher capacity (Ah). If you’re looking for more power, choose a battery that has higher voltage (V). Learn more why voltage and capacity matter.

What is the lifespan of an e-bike battery?

There are several factors that affect the lifetime of a battery such as:

  • environmental conditions: temperature during charging discharging
  • charging rate: how fast or slow your battery is charged
  • charging voltage: what voltage the battery is charged to
  • depth of discharge (DoD): what voltage the battery is discharged to

The list above isn’t exhaustive but, in general, batteries decay as a function of time in the charged state. Period.

Day 1: You get your new e-bike and charge it up to 100% and go on a bike ride. When you come home, you charge the bike back up to 100% and you’re excited to ride it again soon.

Day 2. 364: Life get’s in the way and you still haven’t been out on your bike since that first ride.

Day 365: One year later, it’s the perfect day for a bike ride and you finally have some time on your hands. You head to your basement, unlock your bike, and excitedly turn it on. 80% charge. What? You clearly remember charging your bike to 100% last year before moving it to the basement!

The truth is, we can’t beat thermodynamics. I’ll say it again: batteries decay as a function of time in the charged state.

Now, because you left your battery at 100% for a whole year in a basement with no temperature control, you inadvertently caused your battery to lose a certain amount of irreversible capacity. Your range will be ~20% lower and you’ll likely have to replace your battery sooner than you expected. The table below shows you how much recoverable capacity exists in a battery after storing it at different temperatures and different charge states for 1-year.

This is why a lot of electronics come with batteries that are only partially charged. to help slow down this decay. That being said, it’s hard to track how long e-bikes and their batteries have been sitting in warehouses before being delivered to your door so you could get a battery that has been decaying for a year or two.

Manufacturers also tend to overrate their batteries and will make claims about certain batteries having a lifetime of at least 1,000 cycles. Show.me.the.data.

The lifetime of a lithium-ion battery is described as the number of cycles until the capacity (Ah) drops below 80% of it’s initial capacity. In general, this is roughly 250-400 cycles (depending on battery chemistry and other factors) which amounts to roughly 1.5 to 2 years if you charge discharge daily and care for your battery properly.

How to charge your e-bike battery to make it last longer

  • The thing that will kill your battery faster than anything else is leaving it charged at elevated temperatures. If it’s 80 degrees outside and you have your e-bike fully charged, move it indoors where it’s cooler and try to drain the battery as soon as possible.
  • Charge your battery at room temperature as often as possible.
  • When sourcing an e-bike battery charger, the slower the charge rate the better. For example, if you have a 2-Amp charger, and your battery is a 14 Ah battery pack, you are charging at 14 Ah / 2-Amps = 7-hours. This is a nice, slow charge which will certainly improve the longevity of your battery pack. Avoid charging at rates that are faster than 2-hours for a full charge.

There’s a lot that goes into choosing the best battery for you e-bike, and there certainly isn’t a one-size-fits-all approach. But if I were buying an e-bike battery today, here’s what I’d do: LFP or NMC, slow charge, avoid storing or charging in hotter temperatures, and leave the battery at around 30% charge if you don’t plan on using it for a while.

Have questions? We’d love to help. You can get in touch using the contact form or find us on @somerville_ev

Also, subscribe below for alerts on our next post to learn more about batteries!

How Many Charge Cycles Do E-Bike Batteries Have?

There’s something so freeing about taking a spin on an electric bicycle. You keep on riding without the fear of getting too tired to pedal home. Unfortunately, although your e-bike has the power to get you from Point A to Point B, there may come a time when its battery isn’t able to meet your needs — leaving you stranded to pedal home manually.

To ensure that you don’t get left behind, it’s important to understand how many charge cycles your e-bike’s battery has and how to keep your battery operating at peak efficiency. At Best Electric Bikes, we want you to get the most from your electric bicycle, which is why we’ve put together a quick guide on e-bike batteries and charge cycles.

What Is an E-Bike’s Battery Life?

Your electric bicycle’s battery life is calculated in charge cycles. Charge cycles in e-bike batteriesrefer to the number of full charges that the battery can withstand before it begins showing signs of ineffectiveness — and gradually diminishes over time until they are no longer effective.

On average, your e-bike will be able to go through about 500 charge cycles before showing signs of diminishing. However, the battery life expectancy is dependent on the exact type of battery that your e-bike uses. Here are a quick breakdown of the different battery types and how many charge cycles they have.

  • Lithium batteries – For the most efficient battery, look for an electric bicycle powered by a lithium battery that can hold up to 1000 charge cycles.
  • Nickel batteries – Although not as efficient as a lithium battery, a nickel battery will get you about 500 charge cycles on your e-bike before showing signs of wear and tear.
  • Lead batteries – These e-bike batteries aren’t as common due to their inferior charge cycles, expected to be around 300 cycles.

In most cases, you can expect your e-bike’s battery to last for 500 charge cycles or about four to five years, depending on your usage levels. Once you hit that threshold, it will start operating at approximately 80% of its maximum capacity, gradually lessening over time. Keep in mind that when you use pedal-assist mode on your electric bicycle, the battery doesn’t have to work as hard to power your ride — meaning you can expect your battery to last a bit longer before requiring a replacement.

What Happens When You Reach 500 Charge Cycles on Your E-Bike Battery?

Until the batteries in your TV remote just stop working altogether when they run out of juice, your e-bike battery is going to begin diminishing over time. This means that when you reach your battery’s maximum charge cycles, it will no longer perform as well. However, it will still take you where you need to go — you just might need to charge it more frequently!

As the performance continues to worsen or you find yourself charging it far too often, you will need to determine if it can meet your needs or if you should opt for a battery replacement instead.

How to Maximize Your E-Bike’s Battery Life

Whether you just bought an electric bicycle or you’re trying to maximize the number of charge cycles you have left, some steps can be taken to prolong the lifespan of your e-bike’s battery. However, one of the most important things to understand is that your battery doesn’t only decrease performance through use, but it can even wear out from a lack of use.

If you don’t use your e-bike and it sits there idle without being charged, it can cause irreparable damage to the battery through a process known as self-discharging. So even if you aren’t planning on riding your electric bicycle for some time, it is recommended that you keep your bike charged to ensure optimal performance when you choose to ride it again.

Along with keeping your e-bike’s battery charged, there are additional precautions you can take to take care of the battery.

Charging Your E-Bike

  • Only charge your electric bicycle using the charger and adapter provided by your bike’s manufacturer. Using a generic charger can overcharge the battery which will damage it over time.
  • When you get back from a ride, do not plug your e-bike in to charge right away. Instead, allow the battery to cool before charging it.
  • Give your e-bike a few minutes between unplugging it from the charger and riding it. Hopping right on it after it was charging can cause irreparable damage.
  • While your electric bicycle’s battery level will drop during your ride, don’t allow it to drain to 0% altogether. Instead, drain it somewhere in the 10% – 20% range before charging it up to 100% for maximum battery power.
  • Never let your bike’s battery sit completely dead for an extended period. If you aren’t riding your bike for an extended period, make sure there is a slight charge to the battery.

Storing Your E-Bike

  • Your electric bicycle and battery should be stored in a cool and dry location, void of extreme temperatures. Don’t allow it to sit outside where it will be exposed to hot and cold temperatures and moisture — a garage is an ideal location.

Cleaning Your E-Bike

  • Your electric bicycle might need cleaning every once in a while. Don’t attempt to clean the bike with the battery still attached. If the battery gets wet, not only can this be extremely dangerous for you, but it can completely fry the battery.
  • If the battery needs to be cleaned, it should never be submerged in water. Instead, use a damp cloth to wipe off any dirt and grime lightly.

By utilizing these tips, you’ll increase the lifespan of your electric bicycle’s battery. If you have any Комментарии и мнения владельцев or questions about this subject — or any other — let us know.

The Complete Guide to E-Bike Batteries: Care, Maintenance, and Storage

At the risk of being obvious: an e-bike without a battery is just a bike. But that said, not just any battery will do.

An e-bike battery is responsible for how much power can be delivered to your motor, translating into how much assistance your e-bike gives you on rides. It’s also among the most expensive single components of a bike, with high-quality replacements typically costing several hundred dollars. Because of this, learning about e-bike batteries is critical to getting the most out of your e-bike experience — and the most bang for your buck.

Here’s what we’re about to go over:

How Does An Electric Bicycle Battery Work?

The battery stores all the electrical energy that will eventually be sent to your motor. E-Bike motors don’t have any energy of their own, so the battery is what makes the whole electrical system possible.

E-bike batteries have to be powerful enough to support the motor throughout a typical ride. While you do need to charge your battery regularly, a quality e-bike battery shouldn’t interrupt your commute or sightseeing tour by powering down before your ride is over.

Magnum E-Bike batteries are made of a series of advanced lithium-ion cells. Each cell is like a mini battery; they join together with the other cells to create a battery powerful and long-lasting enough to take you where you need to go.

Volts, Amp-Hours, and Watt-Hours: What Do They Mean?

Voltage refers to the potential power of a battery. For example, a 48V battery is more powerful than a 36V one. Technically speaking, voltage measures the pressure that allows electrons to flow. Similar to water pressure from a hose, the higher the pressure, the more powerful it is.

On an e-bike, the voltage of the battery and motor have to be compatible. Using a battery with a lower voltage than the motor can handle is a waste of potential motor power. Conversely, using a battery with more voltage than the motor can use may cause damage to the motor.

For similar reasons, your battery’s charger needs to be rated at the same voltage as the battery.

If voltage is like water pressure in a hose, amperage is the amount of water flowing. Amp-hours (Ah) refers to how much energy a battery can provide in one hour. So the more amp-hours there are, the longer a battery can keep the motor running. E-Bike batteries typically have between 8Ah and 15Ah.

To combine these two metrics into one simple number, batteries are often rated using a single metric called watt-hours (Wh). Watt-hours are calculated by multiplying voltage by amp hours. For example, a 48V 15Ah battery would have 720Wh (4815 = 720).

It follows that a 36V 20Ah battery would also have 720Wh — but the similarities between those two batteries could end there. To get all the details of what makes a battery the right choice for your e-bike, you need to look deeper.

Qualities Of The Best E-Bike Batteries

There are many e-bike battery makers out there! So what’s the difference between a high-quality battery that will help you ride farther and a cheap battery that just doesn’t perform?

Optimal Materials

Not long ago, most batteries were made from heavy, inefficient, and unsustainable materials like lead-acid or nickel-cadmium. At Magnum, we use the latest lithium nickel cobalt manganese (Li-ncm) battery technology.

Battery Management System (BMS)

The battery management system in each Magnum E-Bike battery controls the individual performance of each battery cell. BMS makes sure that each smaller cell drains, charges, and works the same as others. Without an effective BMS, e-bike batteries would be inconsistent, failing to deliver predictable power to the motor.

Like any hardware, batteries become worn over time. BMS helps extend battery lifespan by avoiding the main causes of battery deterioration: overcharging and excessive depletion. Cells that overcharge get fried and lose performance. Similarly, when batteries drain too much energy and can’t properly recover it, they start to fail. BMS regulates charging and energy deployment across every individual cell, helping the overall battery to perform better and for longer.

Battery Cycle Lives And Long-Range Performance

The number of times you can charge and deplete (discharge) the battery completely before it starts to lose capacity is called its cycle life. It’s normal for batteries to lose performance over time, but higher-quality and better-made batteries have larger capacity and longer range, resulting in increased cycle lives.

Higher-quality batteries typically have a larger capacity and longer range compared to cheaper models. But it’s difficult to produce batteries with high amp-hours and watt-hours that still fit into the slim packaging necessary for a balanced, aerodynamic e-bike.

It’s important to note that batteries continue to function even after they start to lose some efficiency. When batteries have surpassed their cycle life, you may notice your ride range decreasing, needing a charge after fewer miles.

At Magnum Bikes, the cycle life of our advanced Lithium-NCM battery is 700 cycles. Once our batteries have powered riders through 700 charges and discharges, our battery still performs at around 80% of its original level. With proper care, you can typically get 800-1000 charge cycles out of your Magnum battery — roughly two to five years, depending on how frequently and how far you ride.

Best Tips To Maintain Your E-Bike Battery

As the most expensive part to replace on your e-bike, it’s worthwhile to take the extra time and effort to keep your battery in good health. For that reason, even seemingly obvious tips bear repeating.

Follow these recommendations to get the best performance and life out of your e-bike battery.

  • Charge the battery before it gets to 30% life. Batteries are at their healthiest when they stay at or above a 30% charge level. When you’re out on a ride, watch your battery’s charge level. It’s shown on your e-bike’s display monitor. When you get down to 20% or even 10% battery, you’re at risk of losing power before you get back to your charging station. Not only does that put you at risk of unassisted pedaling for a long or hilly journey back home, but it also puts unnecessary strain on the battery. Over time, this speeds up the natural process of deterioration. If you go for extended rides, it may just be a fact of life that you’ll drop into the low battery levels. Don’t sweat it — just know that your battery will last a bit longer if it stays topped off.
  • Don’t charge or use the battery on the bike while it’s hot. Batteries can get hot for a number of reasons. On really warm days, the outside temperature can cause a battery to overheat. Climbing steep terrain can cause the motor to get hot — and potentially the battery, too. Another cause of a hot battery is using a charger with a higher voltage than the battery. But whatever the reason, your response to a hot battery should always be the same: let it cool down before continuing use or charging.
  • Don’t charge immediately after use. Even if your battery doesn’t feel hot, let it rest when you get home after a ride. You won’t have to wait long — batteries recover from use very quickly. You can use the time to hang up your helmet, remove your shoes, and maybe even give the bike a quick clean or tune-up. In less than 5 minutes, you can charge your battery to get ready for your next ride.
  • Don’t use it immediately after charging. Are you seeing a pattern? When it comes to e-bike battery care, patience is a virtue! If you’re leaving on a ride right away, unplug the charger for just a few minutes before you head out. This valuable reset gives your battery time to prepare to transfer energy to the motor on your ride.
  • Unplug the battery when fully charged. When your battery has reached 80% to 100% charge, go ahead and unplug the charger. Don’t worry; your battery will hold the charge until your next ride! This is important because while you can’t actually overfill your battery with power, you can strain the battery by continuing to charge it after it’s full.
  • Keep your battery at the right temperature. When you’re not riding, store the battery around room temperature: 68°F/20°C or slightly lower. Feel free to store your bike in a weatherproof garage or shed, protected from the elements — but if the temps dip much higher or lower than 68°F/20°C, take the battery indoors.
  • Don’t get your battery wet. This is true of any battery, really! Your battery has a sealed, waterproof protective cover that keeps it protected from the rain while you ride. Where you need to be careful is in cleaning and storing your bike and its battery. You might look to a pressure washer to get dirt and grime off your bike quickly, but the intense jet of water can get past the seals, damaging the inside of the battery. And when you aren’t riding your e-bike, store it inside. Excessive and continuous exposure to rain and snow can compromise the waterproof housing over time.
  • Travel safe. Whether you’re traveling with your e-bike on a car rack or in a bike box for shipment, be sure to remove the battery beforehand. This protects it from damage or accidental loss. Remember that you also need to protect that battery from rain and snow! So removing it before putting your bike on a car rack is the best way to keep your battery dry while you travel.
  • Know what to expect for winter performance. In addition to protecting your battery from snow and excessive cold, be aware that e-bike batteries are less efficient in the cold. This means they may deliver a reduced mileage range in extremely cold temps. Try to shorten your rides, or at least ensure that you’re able to charge your battery frequently for extended rides. But don’t worry; the performance will bounce back when warmer temperatures return.
  • Always use the right charger. Your e-bike comes with a charger made specifically for that model; use it! It’s critical for battery health that the charger and battery are compatible and work with the same voltages. Otherwise, at best you’ll see extended charge times — and at worst, you can fry the battery.

Signs It’s Time To Replace Your Battery

Even with impeccable care, your battery will need to be replaced eventually. Once it’s surpassed its cycle life, the battery will begin to lose capacity. When this happens, a “full charge” will really only get you to about 80% of the charge level that the same battery got when it was brand new.

Having read all about your battery by now, you’ll probably recognize the signs early: reduced range or inconsistent performance. This is a normal part of your battery’s life. However, if you notice these signs early (for example, only a year or couple hundred cycles into using your battery), take your bike to a shop or call the manufacturer for more specific information.

When the time comes, make sure to replace your e-bike battery with one crafted for your specific e-bike make and model. As we mentioned earlier, this part is a significant investment, so it’s critical to make the right purchase! Consult your manual or call your manufacturer with any questions.

Take Care Of Your Battery And It’ll Take Care Of You

There isn’t a whole lot to remember for a healthy e-bike battery! Just keep an eye on your battery life when you’re riding, charge it when needed (but don’t forget to unplug when it’s done!), store it properly, and transport it safely. By following these steps to support long-lasting battery health, you’ll get the most out of your e-bike’s battery for many rides to come.

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What Happens When An Electric Bike Runs Out Of Battery?

Electric bikes make commuting to work or the grocery store a breeze, providing plenty of power to keep your wheels turning. Depending on your e-bike, you might not even need to pedal at all!

But what happens when an electric bike runs out of battery life? Does it stop working entirely?

This article will answer this question and discuss ways to extend your electric bicycle’s battery life. That way, you can be prepared to handle sudden battery failures and enjoy the longest-lasting battery life!

Do Electric Bikes Stop Working When They Run Out of Power?

No, your electric bike will not stop working when it runs out of battery power. Unless you’re riding an electric motorbike, which is more similar to a motorcycle or scooter than a conventional bicycle, you’ll still be able to use your e-bike when the battery runs out of power.

After all, nearly all electric bikes have pedals, and these pedals function normally, with or without battery power. That said, depending on the size and weight of your e-bike, pedaling it home after it has run out of power can be challenging.

Therefore, it’s crucial to ensure that your bike’s battery is always properly charged. This means connecting your electric bike’s battery to a reliable and safe power source after each ride.

But what if your bike’s battery refuses to charge? Does that mean you need a new e-bike battery?

Do You Need to Replace an Electric Bike’s Battery?

Like car batteries, e-bike batteries eventually need to be replaced. Most electric bicycle batteries last between three and five years.

If your current e-bike battery no longer accepts a charge or runs out of power early on during your rides, you might need to replace it.

Of course, you might be able to extend your bike’s battery life to the maximum threshold by following a few maintenance tips and tricks.

How to Extend an E-Bike’s Battery Life

There are several ways to keep your electric bike’s battery in tip-top shape and ensure it holds its charge. Some of the best tips include:

  • Don’t travel at top speed
  • Utilize pedal assist modes
  • Store your bike indoors
  • Charge the battery after each ride
  • Avoid exposing the battery to heat

Let’s explore these tips to ensure your e-bike’s battery enjoys a long lifespan!

Don’t Travel at Top Speed

Though you might want to crank your electric bike to its top speed while cruising around town, it’s often far wiser to only go as fast as you need to.

Keeping to a mid-range temperature (about 10 mph or 16kph for most e-bikes) helps reduce the power you use during each ride. It can also ensure you have plenty of battery power to overcome steep inclines or transport heavy groceries home.

If your chosen electric bike doesn’t have a display screen that shows your current speed, you might want to add one to your bike. Some e-bike brands sell optional display screens as accessories, but you could also choose a widely compatible option that suits most models.

The HUDAMZKY Ebike LCD Display Mini Meter is a worthwhile option for those without built-in display screens. It’s compatible with 24V to 52V bikes and clips directly onto your bike handle for convenient reading. In addition to displaying your e-bike’s speed, this device can also help you adjust your speed settings!

Utilize Pedal Assist Modes

Another fantastic way to extend your electric bike’s battery life is to utilize its pedal assist modes. These modes add extra power to your pedaling, reducing the strain on the battery while still helping you get to your destination without expending much effort.

Some e-bikes are either zero-power or throttle-only, meaning they lack a pedal assist mode. If this applies to your electric bicycle, you’ll want to keep a close eye on your average speed and try to pedal instead of using the throttle (whenever possible).

Ensuring you charge your battery after each ride is also a fantastic way to extend your bike’s battery life.

Charge the Battery After Each Ride

Each time you return home after riding your e-bike, you should immediately roll into a cool indoor area and charge the battery.

If you enjoy short-range rides, you might be tempted to neglect post-ride charges, as your battery might still have plenty of power. But getting into the habit of charging your electric bike battery each time you’ve finished riding is an excellent way to avoid fully depleting your battery.

A fully depleted lithium bike battery can struggle to receive a charge. If you accidentally let your e-bike’s battery die multiple times, it might only function at a fraction of its original capacity.

Avoid Exposing the Battery to Heat

Like electric vehicles (EVs), most electric bikes use lithium batteries to power their motors. These batteries are long-lasting and easy to charge using electrical outlets. But they are sensitive to high-heat conditions.

Now, it might not always be possible to avoid exposing your bike’s battery to heat, especially when riding during the summertime. But keeping your bike indoors, preferably in an air-conditioned space, can help negate damage caused while riding outdoors on a hot day.

After all, when a lithium battery is exposed to high-heat conditions of 122°F (50°C) for hours at a time, it can begin to develop internal signs of damage.

These damages can result in a lower battery capacity, meaning that each subsequent charge will produce less power. Over time, your e-bike’s battery might even refuse to accept any charge, necessitating a full replacement.

Final Thoughts

When an electric bike runs out of battery, you’ll still be able to pedal it to get it moving again. However, you won’t be able to utilize the electric power via pedal assist or throttle-only modes.

If you’ve noticed that your e-bike’s battery isn’t providing as much power as it once did or fails to accept a charge, you likely need to replace it.

To help your electric bicycle’s battery last longer, keep it away from high-heat areas. You might also want to charge the battery after each ride and avoid riding at the bike’s top speed.

Jason Hawkley is a biking enthusiast, which is a nice way of saying he’s a total nerd when it comes to bikes. One day while mountain biking through the woods in New Hampshire, the idea came him to create Our Streets as a way to share his biking passion with you.

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