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How to choose a battery for an Ebike?

Hailong Type Ebike Lithium Battery Instructure

E-bikes have been popular in the last few years, and the number of users is growing at an increasingly rapid pace. What makes them so many enthusiasts? Its quite simple, electric bicycle is a means of transport, which combines the best features of scooters and bikes – helps to avoid traffic jams, makes it easier to ride during troublesome hills and does not make any noise.

The base of the Ebike is the motor and of course the battery, which is the subject of this article. As in the title, electric bike lithium battery manufacturer SmartPropel will help to answer the question – how to choose a battery for Ebike? Whether you replace the battery in your Ebike or convert a traditional bike to an electric one, after reading this, you should know everything about choosing the right battery model.

Ebike Lithium battery


The Ebike motors are factory adapted to the specific battery voltage they work with, so our job is simply to match one to another. So the principle is simple – what kind of motor voltage such is the lithium battery voltage.

2.Discharge port type

Please pay attention to what type of input is in our Electric bike and choose a battery discharge port type with the appropriate version. The most common type of connection is 4-pin, which looks like this:

Electric Bike Lithium Battery Port

3.Battery type (shape ,dimension, mount )

We have to answer the question: what does our battery look like and where do we mount it on our Ebike? There are many types of batteries for Ebikes, let’s see Top 7 Most Common Battery Types For E-bikes

Different Types Electric Bike Lithium battery

4. Motor power and controller

The stronger the engine, the better the acceleration, the more support on the ascent, and consequently, the faster the battery discharge. This issue is not too problematic if we bought a ready-made, legally compliant Ebike. In the case of consumer bikes, we are limited by regulations to 250W and 25km/h, because such maximum power can be provided by Ebikes. The engine cannot provide more than 250W and will not support the drive if we have already reached 25km/h. Knowing that only in such ranges the engine will work, it is easy for us to judge which battery we need.

Ebike accessory Motor

The situation is slightly different if we have a custom bike model. Of course, a lot depends on the style of riding, but let us not fool ourselves if we have a powerful engine, we will certainly want to use its capabilities. Knowing that our Ebike will have high performance it is worth to consider also buying bigger battery to be able to enjoy this performance longer, but a little more about it in the next point about capacity.

5.What capacity do we need?

There is no obvious answer to this question. Battery capacity depends primarily on our needs and the role that Ebike has to play. We have to consider how long distances we want to cover and whether we will subject the bike to greater loads, e.g. riding often on mountainous terrain. The aspects that are most important when choosing the ideal model are the desired range, price and weight of the battery.

Batteries for Electric bike are based on very similar cells as batteries for laptops or other mobile devices, so the range of E-bikes can be compared to the working time of mobile computers. When we don’t use very intensive, we write emails, read, we will get up to 2x better results than if we played the latest Battlefield.

The same goes for bicycle batteries. If we mainly move through city streets, we can deplete the battery after 90 kilometers. However, the same battery will run out after just 45 kilometers of intensive cycling on the mountain bike trail.

Below is a table showing the estimated performance of batteries with different capacities and voltages. Another variable is the driving mode, i.e. the degree of support to be provided by the engine. Electric bikes usually have two or sometimes three modes. We will focus on two – Eco and Turbo. The Eco mode is designed to save energy, the support is reduced to increase the range of the ride (but it is quiet enough to effortlessly climb hills). Turbo mode, on the other hand, is aimed at making the ascent as easy as possible and significantly increasing acceleration. The values in the table are for constant 250W operation, and it must be taken into account that the range in kilometers also depends on the weight of the user and the luggage he or she carries. When driving on an e-bike, the engine does not work all the time, much less at maximum power, so the distance traveled on one charge can actually be much longer.

2020 12 11 上午9.03.24副本

Buying a battery for ebike

If we already know everything about the parameters and type of battery and have decided what capacity the battery needs, let us find it! First, let us go to the category of Electric bike lithium battery on our website. These are advanced models with A grade cells, different capacities, mounting types, and voltages 24V 36V, 48V,52V. Batteries work with a wide range of bicycle models from manufacturers such as Eco bike, Gazelle, Giant, Yamaha, Haibike, Kalkhoff, Lovelec, or Prophete. Welcome to contact us to find the right battery model here.

SmartPropel Original Work Writer: Michelle