E-Bike Batteries: Volts, Amps, & Watt Hours Explained. High voltage bike

E-Bike Batteries: Volts, Amps, Watt Hours Explained

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What Are These Volts, Amps, and Watt-Hours? How Battery Specifications and Capacity Equate to Capability and Cost

Understanding e-bike batteries can be challenging, even for those of us in the know; the nitty-gritty details are figured out by electrical engineers with years of education and experience under their collective belts – and for good reason, it’s all chemistry and math over there!

You’ll encounter a host of terms when reading about e-bikes or looking at electric bike battery specifications: things like battery size, capacity, voltage, amp hours and watt hours. Some of these words are more-or-less interchangeable, others are related but distinct. All of them can be confusing, but they are also hugely important in understanding electric bikes and their capabilities – most notably when trying to interpret how far they can take you before needing to be recharged.

In this guide to e-bike batteries, the helpful writers at Electric Bike Report will help you to understand the meaning of common battery terms and their relation to the performance of the electric bikes they power.

E-Bike Batteries Explained

Batteries are one of the core elements of electric bikes. They are needed to supply power to the motor, which in turn provides assistance to the rider, and reduces the amount of human effort needed to move the bike.

E-bike batteries come in various sizes, and can be mounted to the frame in different ways. Some are fully internal, and are sealed inside the bike’s frame. As such, they are not removable, except by using special methods and tools available to professional technicians. Others are removable for easier charging and replacement, whether mounted completely externally (outside the frame), partially recessed (sunken into the frame to some degree), or completely recessed (sunken entirely and nearly invisible on the bike).

Regardless of their type, all e-bike batteries are actually battery packs, and are made up of groups of cells, similar to the standard AA or AAA batteries used in everyday applications. The number of cells and the method used to cluster them together determines how quickly they can provide power and how long they can continue to supply it.

In contrast to standard AA or AAA batteries, however, those used in e-bikes are most commonly rechargeable lithium-ion batteries similar to those used inside smartphones and in conjunction with cordless power tools. Lithium-ion batteries are efficient and can be recharged hundreds or even thousands of times if cared for properly. The Light Electric Vehicle Association, or LEVA, has a great article that they allowed us to re-publish regarding proper battery care and safety to ensure maximum life span.

Fully integrated batteries such as the one on the Velotric Nomad 1 can match the bike’s color and disappear into the frame.

Electric Bike Battery Terms and Definitions

Before we dive deeper into the details, let’s consider a couple of examples of e-bike battery specifications in relation to how they usually appear:

V = Volts and Ah = Amp-hours

V = Volts and Wh = Watt-hours

Both examples convey two basic measurements, albeit a little differently. In both examples, we see volts first; this measurement relates to the availability of the electrical energy the battery can deliver. Next, either amp-hours or watt-hours are shown; these represent a battery’s capacity, or the amount of power it can store.

e-bike, batteries, volts, amps, watt

Let’s define these words (and a few helpful additional terms) a bit more clearly:

Current: the flow of electricity, or transfer of electrons, through a circuit.

Circuit: a closed system of wires and electrical components through which current can travel.

Volts (V): the amount of electrical force or pressure the battery can produce; the speed of the battery’s output of current. This is also sometimes referred to as the electromotive force, and is more specifically the speed at which electrons move through the system.

Note that this is a nominal rating that is used for classification purposes. In reality, a battery’s voltage varies based on the amount of power being drawn from it at a given moment, as well as the battery’s present level of charge. As current is drawn from the battery, its voltage decreases. This can be seen in an e-bike battery voltage chart.

Voltage is determined by the number of battery cells arranged “in series”.

Amps or amperes (A): a measurement of the strength of the battery’s output, or current. specifically, the volume of electrons passing through the system. This is limited by the size of the wires making up the system. Larger wires allow more current, smaller wires allow less. Generally, systems with higher voltage should use smaller wires (that limit amperage) to prevent overheating.

Amps can also be thought of as the amount of energy being drawn from the battery by what it is powering, and can fluctuate from moment to moment. In the case of e-bike batteries and their motors, a greater number of amps are drawn as the motor works harder (i.e. going uphill or using only the throttle).

Amp-hours (Ah): a measurement of charge; the amount of energy that can be delivered through an electrical system over the course of an hour.

In the case of a 10 Ah battery, it can deliver 10 amps of power in one hour, or 1 amp of power for 10 hours, etc, depending on the needs of the component that is delivering power to.

Amp-hours are determined by the number of clusters of battery cells arranged “in parallel”.

Watts (W): a unit of power, determined by volts and amps; the amount of work that can be done by one amp of current delivered at 1 volt. The amount of work is determined by the rate at which the energy is used.

This measurement is generally applied only to an e-bike’s motor, but its battery must support the motor’s needs.

Watt-hours (Wh): another measurement of capacity. In this case, the amount of work that can be done, or the amount of power that is spent, over the course of an hour. This is a direct result of a battery’s voltage multiplied by its amp-hours.

As such, a 24V, 20 Ah battery and a 48V, 10 Ah battery might look different on paper, but they have about the same amount of energy. This makes watt-hours a more reliable indicator of capacity when comparing different batteries.

Controller: A device that limits the flow of electricity through a circuit, and prevents a battery from discharging its energy all at once. In terms of an electric bike, this is the “brain” that adjusts the pedal assist system, the amount of input the motor contributes, and the e-bike’s speed.

Electric Bikes

The ebike model that started it all: Hop on our flagship fat tire and you may never want to leave. Now in its sixth version, the RadRover 6 Plus powers through all types of weather and terrain, with the technology and design to make it your best ebike ride yet.

The ebike model that started it all: Hop on our flagship fat tire and you may never want to leave. Now in its sixth version, the RadRover 6 Step-Thru makes it easy to step on and power through all types of weather and terrain, with the technology and design to make it your best ebike ride yet.

This next-level hauler is perfect for taking the kids across town or loading up at the hardware store. The electric cargo bike’s elongated frame and lower center of gravity provide stable, reliable rides, even when you’re taking full advantage of the 350 lb. payload capacity. Take a passenger (or two!) for a spin.

The RadCity 5 Plus High-Step makes commuting the best part of your day. The high-step frame delivers a traditional bike-feel, offering hydraulic disc brakes and a 750W geared hub motor help you conquer hills without breaking a sweat, while a semi-integrated battery makes recharging and storing your battery a breeze.

The RadCity 5 Plus Step-Thru makes commuting the best part of your day. Hop on and off with ease via the step-thru frame design. Hydraulic disc brakes and a 750W geared hub motor help you conquer hills without breaking a sweat, while a semi-integrated battery makes recharging and storing your battery a breeze.

The RadRunner 3 Plus raises the bar for what you can expect from an electric utility bike. Featuring a redesigned low-step frame, hydraulic brakes, and our most up-to-date tech, it’s expertly engineered to deliver an unmatched riding experience.

x.png?v=1684283466 alt=Side view of a black RadRunner 2 electric utility bike width= /

This head turner delivers on more than just style: it can help you carry cargo, passengers, and even your morning joe. Factor in over 330 possible accessory combinations, and you can customize this moped-style ebike to your heart’s content.

Our latest folding ebike has fatter tires to tackle adventures of all sorts. Featuring a step-through frame, and allows you to customize your ride with adjustable handlebars, seven speeds, and four levels of pedal-assist.

Perfect for errands, perfect for fun, this electric utility bike comes fully-loaded with exclusive accessories to elevate your everyday experiences. The passenger package invites you to bring a friend for the ride, while the premium headlight gives you the confidence to hit the road any time.

High-Step Frame

Step-Thru Frame

Lower top-tube angle than a high-step frame. Riders find a more forgiving angle for swinging their leg over when mounting and dismounting.

Mid-Step Frame

Frame design without a top tube. No need to swing a leg over. rider mounts and dismounts by stepping over the low, dropped frame.

Electric bikes for all

Rad Power Bikes was founded in 2007 as a sole proprietorship and today, it’s North America’s largest electric bike brand. We rely on hundreds of designers, engineers, and support specialists to ensure that all 450,000 customers ride the best electric bikes possible. Our vision is a world where transportation is energy-efficient, enjoyable, and accessible to all.

An electric bike is simply a traditional bicycle that has been equipped with a battery-powered motor that makes it easier for riders to climb hills, go faster, haul cargo, and cover longer distances without getting tired with support from a pedal assist feature or a throttle. It is also known as an ebike or e-bike.

You can ride an electric bike the same way you would ride a traditional bike. The only difference is you have the option to summon power from the motor to make pedaling easier or operate the bike without pedaling.

In North America, electric bikes are commonly put into three different regulatory classes.

  • Class 1: Pedal-assist only; motor provides assistance all the way up to 20 mph.
  • Class 2: Pedal-assist or throttle; motor provides assistance all the way up to 20 mph.
  • Class 3: Pedal assist only; motor provides assistance all the way up to 28 mph.

At Rad Power Bikes we exclusively make Class 2 electric bikes. All of our electric bikes include a battery that lasts 45-50 miles per charge, depending on the amount of power used, the type of terrain being ridden on, and the weight of the rider and cargo.

How do ebikes work?

The geared hub or direct drive motor channels energy from the battery to the pedals, which adds extra power with each pedal stroke to help the rider operate the bike. This is the pedal assist feature. Some electric bikes, like Rad’s, also include a throttle which propels the bike forward without the rider having to pedal, similar to a moped.

There are two ways electric bikes can be made. They can either be designed to be electric bikes from the start or developed by converting traditional bikes to be electric. An ebike conversion kit is a set of equipment that can be used to convert a traditional bicycle to an electric bicycle. Since ebikes for sale at Rad Power Bikes come standard with the motor and other necessary components, an ebike conversion kit is not necessary.

Why should I consider an ebike?

Electric bikes can fit seamlessly into your everyday life. They can be used to help you run errands, commute to work, enjoy outdoor activities like camping, hiking, skiing, fishing, or hunting. They can also enhance your mobility and help you ride with children. In short, they’re a fun, easy way to get around and do more of what you love.

Electric bikes also have commercial uses. Domino’s pizza franchises use our ebikes to deliver food and hundreds of rental fleets rely on Rad Power Bikes.

Match your lifestyle and ride needs

We know that different riders have different needs. While all of our bikes are great for multi-use situations, some models have special features. Electric cargo and utility bikes can be used to haul gear or ride with children. Electric folding bikes are designed to fit in RVs, trunks, small apartments or other compact spaces. Electric city and commuter bikes are designed for urban travel, reducing car trips, and saving you gas money. Electric off-road and all-terrain bikes are designed for camping trips, hunting, fishing, and light mountain biking.

In addition, we also design step-through electric bike models that make it easier to mount and dismount the bike and enhance mobility for all kinds of riders. All of our electric bikes can be used to climb hills easier, cover long distances, and haul cargo without getting tired.

We also sell ebike accessories that you can use to customize your ride. These include products for storage and transport, safety and security, seating and comfort, and ebike upgrades like phone mounts and USB chargers. To help you find the best accessories for your needs, you can select a curated electric bike kit or use the ebike customizer option at checkout.

Energy efficient transportation

There are environmental benefits that come with riding an ebike. Electric bikes are a key form of energy efficient transportation. They do not give off emissions while riding, ease traffic, and reduce congestion. Check out how ebikes can cut your carbon footprint with our emissions calculator.

Save money

Electric bikes can help you save money on gas since they provide a reliable alternative to cars. In addition, ebikes can reduce costs associated with parking and routine car maintenance.

Health benefits

Research says electric bikes can improve your health by helping you get exercise. When you pedal an ebike, you burn calories – especially if you are not using a high level of pedal assist. Electric bikes also make it easier to go longer distances than traditional bikes, which can extend the amount of time that you exercise.

We’ve heard from many customers that our electric bikes have improved their health. Rider Blair Hebert says his ebike helped him lose 40 lb., reverse adult onset diabetes, and recover from fatty liver disease. Another rider told us that he used his electric bike to lose weight ahead of a kidney donation surgery. (These are testimonials from customers and are not meant to constitute specific medical advice or claims.)

How to buy Rad

We sell electric bikes at affordable as a direct-to-consumer company which means we don’t sell our products through third-party retailers, helping reduce overhead costs. We then pass the savings on to our consumers. We were the first electric bike company to pursue this business model. You can also take advantage of flexible ebike financing options, free shipping, a one-year warranty, and a 14-day free trial.

To help find the best electric bike model by browsing our website, using our ebike finder, reading our guide to the best electric bikes, or calling our specially trained customer support team and asking for their advice. You’ll be prompted to enter your zip code where you can choose to have the bike sent directly to you, sent to a bike shop for assembly, delivered fully-assembled by a velofix mobile service provider or for online pick-up at a Rad Power Bikes retail store.

We have retail stores in the U.S., Canada, and Europe. When you shop at a retail store, you can test ride models and ask for advice from our retail team to find the best ebike for you. Find a location near you here. Our customer service team can take your order over the phone, answer additional questions you have about ebikes, and help you pick your preferred shipping option.

Owning a Rad ebike

We design high-quality electric bikes our customers are proud to own. Every ebike is rigorously tested to ensure quality before it reaches your doorstep. To learn more about our design and quality assurance process, read our guide.

Our Product Support team can help you troubleshoot issues online or over the phone. For service maintenance and repairs, you can take your electric bike to a Rad Power Bikes service center, book a mobile service visit from our third-party partner, velofix, or bring your ebike to a local bike shop in our network.

Thank you to our 450,000 customers who are having fun and riding Rad!

Take this short quiz to find your perfect ebike.

How To Choose the Best Voltage for an Electric Bike

When shopping around for e-bikes, you’re going to be hit with a bunch of different metrics and numbers. Knowing how to understand these e-bike qualities will give you the best chance at finding the right bike for your particular needs. One metric that you’ll have to decide on is battery voltage.

A battery’s voltage and amps will give you an indication of how many Watts of power it can put out. The equation for Watts is Voltage x Amps. In most cases, a 36V or 48V battery will be more than enough for your bike, but for mountain bikes, consider higher-voltage batteries.

Understanding voltage can help you make the most out of your e-bike purchase. It’s not the only thing you’ll need to know, but it is an important factor to consider. We’ll walk you through what you need to know for purchasing the best battery for you. Just read on!

What is Voltage and Why is it Important?

When it comes to the e-bike electricity equation, battery voltage is just one part of it. You’ll need a bit more information to get a grasp of how the voltage of an e-bike battery affects overall performance and speed. So, what does voltage mean, and what are the best e-bike voltage range options?

Voltage is essentially a measure of electrical pressure, or electrical potential. Think of voltage as the water pressure in a garden hose. The higher the voltage, or the more pressure in the hose, and the more pressure of electrons flowing through the circuit.

At this point, you may be wondering what that has to do with the power of your e-bike? Well, to find the answer to that, you’re going to need to find the amps of your battery as well.

Amps measure electrical current. Imagine them as the diameter of the garden hose we mentioned earlier.

Basically, the smaller the amps, the harder it is for electrons to flow freely. It would be like having a water hose that’s a bit too small. Instead of a steady stream of water, you’d get a very intense, but small, stream. Taken together with all your electric bike’s other components, volts and amps combine into watts.

You can gauge the power of your battery/engine combo by checking it’s total watts. You can even relate these two to horsepower.

When it comes to the best electric battery type, battery voltage certainly plays a role — but it’s not the only factor you should take into account.

What is the Best Voltage For an E-bike Battery?

Voltage is an important factor when it comes to e-bike batteries. While we’ve learned that this isn’t the only metric you should be judging your e-bike, you should definitely still check the battery’s voltage to assess your bike’s power. So, which voltage is best when it comes to e-bikes?

Generally speaking, the higher the voltage, the better the power. Amps will play a role in this as well. E-bike batteries come in a variety of voltages, from as low as 24V all the way up to 72V, with 36V and 48V being typical values. The

more volts, the more powerful the bike is, but the faster it’ll run through its battery.

Some places have laws and restrictions on this kind of power and classify this kind of e-bike as a motorized vehicle — meaning you’ll need the proper safety features and licensing.

Why There Is No Single “Best” Battery Voltage, and How Voltage Affects Performance

When it comes to choosing the best e-bike battery type, you’ll certainly want to look at voltage. But, as we touched on earlier, that’s not the only metric that helps determine overall speed and performance.

There isn’t one universal “perfect” battery voltage for e-bikes. That’s because different voltages offer different experiences for riders, and no one voltage is considered the best. To calculate what voltage you need, you’ll also need to know your battery’s amperage.

If you remember our garden hose analogy from earlier, we can get a good idea of how voltage and amps relate to each other. If you have a high voltage or pressure, and low amps, or a smaller hose diameter (the flow of electrons), then you won’t have the optimal flow.

Additionally, if the metrics are switched, and you have low volts and high amps, it would be like a trickle of water coming from a huge pipe — which isn’t very effective either.

That’s why you need to match your motor with your battery. There’s a range of e-bike battery voltage options, and each one has its benefits in terms of performance, top speed, and torque.

What Are The Positive and Negative Effects of Having High or Low Battery Voltage?

While the volts of your battery only matter in relation to the amps, that’s not quite the whole story. For most e-bikes, you’ll need to look at watts over anything else. This is the closest measure of power we have that is similar to miles per hour.

While there is no direct conversion, the higher the watts, the more power you have. But what are the effects of high or low volts on an electric bike? Well, first, we need to see the formula for wattage:

This is the formula for calculating wattage:

Watts = Volts x Amps

So, a 36V bike pulling 20 amps will produce 720 watts of power. Alright, now that we understand that, back to the original question: how does higher voltage affect the performance of an electric bike?

Alright, so let’s say e-bike A has a 24V, 20AH battery. That bike would have 480 watts of energy. Now, e-bike B has a 48V, 10 AH battery. This bike would also have 480 watts of energy. So, are they any different?

Simply put, both bikes would offer very similar performance. Due to the higher voltage and the higher pressure in the circuit, the bike with a higher voltage, e-bike B, will be able to perform a bit better in certain conditions — like riding up steep hills.

Why? Well, the extra pressure will allow the motor to turn at a higher RPM. This will affect overall torque.

Is a 36V or 48V Battery Better?

As we’ve already learned, no one battery voltage is inherently better than the other. While you might get a bit more performance out of a higher voltage unit, the difference will be minimal, given that the e-bikes still have a similar wattage.

Overall, you’ll want to choose the right voltage for you. In most cases, you’ll be choosing between a 36V or 48V battery, as these are the most popular choices for e-bikes. One is not necessarily better than the other. Other factors, like battery amperage, size, and capacity, will also play a role.

The most important factor is purchasing a high-quality batter from the start. This can have a bigger impact on your overall e-bike performance than just judging a battery by voltage alone.

Most battery manufacturers will offer options in different voltage ranges. A saddle battery pack, like this Battery from UnitPackPower (on Amazon), is great for weight distribution.

Some products, like this X-go Battery Pack (see on Amazon), will come packed with additional features. This modern unit allows for phones or other connected devices to share the charge or the battery.

At the end of the day, as long as the overall e-bike wattage is what you need, voltage won’t have as much of an effect as these other feature and quality-driven decisions.

How to Choose the Appropriate Battery Voltage for Your New Electric Bike

When it comes to choosing the best e-bike battery types for your ride, you’ll probably have a few decisions to make. Battery voltage is certainly one of them, but remember that it’s not the only metric you should be looking at during the buying process.

So what’s the best e-bike battery? How do you choose the right voltage?

e-bike, batteries, volts, amps, watt

You want make sure your battery’s combination of amps and voltage will have enough power to keep up with your engine. In most cases, a 36V or 48V battery will be more than enough.

For some specialty e-bikes, like mountain bikes or super fast e-bikes, a higher voltage may be necessary but also check with the manufacturer.

Can You Change Your Battery Voltage Later?

Since batteries are usually replaceable, it follows that you might think you can just swap out for a larger voltage sometime in the future. Lots of people will be looking to add a bit of extra juice to their ride. Is this the right way to do it?

Yes, you can swap out your current e-bike battery for a battery with a higher voltage later. Keep in mind that you’ll need to factor in other battery values like amps to get the most out of the swap.

Posted on Last updated: January 14, 2023

Volts, Watts, and Amp Hours: Understanding the Technicalities of Electric Bicycles

The electric bicycle, often referred to as the electric bike or e-bike, has revolutionized the way bicycles are used. In its simplest form, an e-bike is a bicycle with a pedal power electric bike motor to assist your riding. Just pedal as usual and the small motor will automatically engage. This is useful for situations in which you need a boost like riding uphill. You won’t notice any difference if compared to a regular bicycle, except for a more powerful feeling.

Some e-bikes include a throttle option that is activated with the press of a button. This additional mode allows you to feel even more power on a racing track. E-bikes are promising eco-friendly transportation that can replace driving shortly. They can be very fast to get from point A to point B. Unlike driving, you exercise your body in the process. So, if you are considering buying an e-bike, you must be able to understand their technical specs.

The key component of an e-bike is the electric bike motor. Most motors are built with similar technology. Hence, they are commonly characterized by the same set of parameters. Equally important is the battery. Batteries are also described by some electrical parameters. But, what are these parameters? What do they represent? What values should I choose for my needs? This article explains all the basics for you to understand these technical specifications.

What are Watts?

The Watt (W) is a unit of electric power. Other forms of power, including human power, can be measured in Watts also. For an electric motor, the meaning is straightforward. The higher the Watt rating, the more powerful your e-bike will be. Typically, an e-bike motor can be rated 250-300 W. However, this figure alone doesn’t give much performance information. Thus, one should pay attention to two Watt ratings used to characterize e-bikes:

  • Continuous Watt rating. This figure refers to the nominal power of the electrical motor. This is the energy used by the motor continuously under normal operation;
  • P eak Watt rating. This is the maximum power measured under special conditions like riding uphill. This value can be several times the continuous power stated by the manufacturer.

Technically, electrical power (in Watts) is calculated as the product of voltage (in Volts) times current (in Amperes). Why are Watts important in electric bikes? This figure gives you an idea of how powerful your e-bike can be. Choose a high Watt rating if you plan on using your e-bike on rough terrain with frequent uphill rides.

However, for the assessment of battery capacity, a different figure is issued: the Watt Hour (Wh). The larger the figure in Wh, the bigger the capacity of the battery. The Wh rating tells you how much energy the battery can supply on a single charge. This translates into how long you can use your e-bike without the need to recharge it. When you are out in the market looking for an e-bike, the Wh rating will allow you to compare different batteries.

For instance, if you have a battery with a 500 Wh rating, it can power a motor with 250 W for two hours. If the electric motor consumes 500 W, then the battery will work for one hour only. Hence, for more powerful electric motors, you should pay attention to the Wh rating of the battery. This is critical if you plan on using your e-bike for transportation over long distances without recharging the battery.

What are Volts?

The electric potential commonly referred to as voltage is given in Volts (V). In a battery, the number of volts represents the ‘pressure’ with which the battery pushes electrons through wires. The electric motor of the e-bike has several coils made of copper wire. Hence, the higher the voltage of the battery, the higher is the flow of electrons through the coils of the motor.

This electron flow directly translates into a higher assisted speed of the e-bike. It can help with the uphill climbing ability also. The flow of electrons through a wire is called electric current and is measured in Amperes (Amp). Commonly, the analogy between voltage and power pressure is put forward to understand the concept more clearly. With such an analogy, the electric current would be analogous to the flow of water through a pipe.

While e-bikes use different voltages, the most common ones are 36 V and 48 V. Now that we understand the meaning of all these parameters, we can do some math. For instance, an e-bike using a 36 V that draws 10 Amp, has a power of 360 W. This power is average for modern e-bikes. By comparison, you can get an idea of how much power is a 500W bike motor.

Now, there is an interesting thing to consider. As seen from these calculations, a higher voltage can produce higher power with less current. High current is usually the cause of wire and electronics overheating. Going back to the analogy of water flow in a pipe, for a large flow, we need a larger pipe. Likewise, to allow for higher electric current, we need larger wires. Modern e-bikes use high voltage only because it allows for thinner wire and less cumbersome electronics.

Therefore, if you are comparing different e-bikes, you should opt for higher voltage whenever possible. Just remember, a single parameter doesn’t give the entire picture. You have to take into account all of them together.

What are Amp Hours?

For batteries, you won’t see a current value to characterize it. Instead, the Amp Hours (Ah) rating is more commonly used. Just like Wh, Ah measures the capacity of the battery. What does this parameter mean? Simply put, a battery with a 10 Ah rating can deliver 10 Amp of current during one hour. Equivalently, it can deliver 1 Amp during 10 hours. To use Ah to compare different batteries, you must make sure that they have the same voltage.

For practical purposes, Ah is less useful to compare the batteries of different e-bikes. It doesn’t make sense unless you take the voltage into account. Hence, in most cases, Wh is preferred. You can calculate Wh if you have the Ah rating and the voltage of a battery. You just need to multiply Ah times the voltage.

For example, a 36 V battery rated 10 Ah has 360 Wh of capacity. As was explained, Wh gives you a better idea of the performance of an e-bike’s battery and motor.

Delfast is an example of an e-bike with Wh batteries

Delfast goes beyond the expectations in this market. A Delfast electric bike is equipped with a 20S15P Panasonic battery. It delivers 72 V and has a 48 Ah rating, which is equivalent to 3456 Wh. Because of the high voltage, the electronics and wiring are quite small. This type of battery allows for up to 3000 charge cycles. For comparison, a common e-bike in the market will withstand up to 1000 charge cycles at most.


Now you are familiar with the different electric parameters to take into account in an e-bike. Let’s summarize each of them. Watts indicate the power of the motor. Make sure the battery has a Wh rating that allows you to ride your bike for the wished time without recharging the battery. Voltage is also important. Higher battery voltage is preferred.

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