If you’ve ever tried to stock e-bike batteries, you’ve probably asked the same question:

Which capacity should I go with?

There isn’t a one-size-fits-all answer. It really depends on how your customers use their bikes. But once you understand the difference between a few common options, it gets much easier to decide what to stock.

5.2Ah – simple, light, and budget-friendly

A 5.2Ah battery is usually found on lighter e-bikes or entry-level models. It keeps the cost down and makes the bike easier to handle, which is why a lot of shared bikes and basic commuter models use this setup.

A typical example would be something like this:18650 36V 5.Ah Electric Bicycle Battery

In real use, most riders get around 15 to 30 km per charge. Not huge, but enough for short daily trips.

This kind of battery works well if your customers care more about price than long range.

10Ah – the safe middle ground

If you’re not sure what to start with, 10Ah is usually the safest bet.

It gives riders enough range for daily use without pushing the price too high. That’s why a lot of sellers treat it as their main product.

Most bikes with a 10Ah battery can handle around 40 to 60 km on a charge, which covers typical commuting needs in most cities.

15Ah and above – for longer rides

Once you go above 15Ah, you’re looking at a different type of customer.

These are usually people who ride longer distances, like delivery riders or commuters who don’t want to charge every day.

Range can go up to 70–100 km, depending on the setup. Of course, the battery is bigger, heavier, and more expensive, so it’s not for everyone.

How most wholesalers actually stock

Instead of choosing just one option, many distributors carry a small mix.

A common setup looks like this:

• a lower-capacity model to attract price-sensitive buyers
• a mid-range option that sells the most
• a higher-capacity version with better margins

This way, you’re not limiting yourself to just one type of customer.

Easy mistake to avoid

Going too small often leads to complaints about range.
Going too big can slow down sales because of the price.

Finding the balance is what really matters.

If you’re still figuring out how to judge battery quality beyond just capacity, it’s worth starting here:
👉 How to Choose the Right 36V Lithium Battery for E-bike

And once you know what capacity you want, the next step is making sure your supplier can actually deliver consistent quality:
👉 36V E-bike Battery Wholesale: How to Find a Reliable Supplier