View all e-Bike batteries

Look at the label on your current battery, usually on the bottom or side. It shows the type number, for example 0.275.007.540 or BT-E6010. Search for it in the battery finder or the search bar: that's the quickest way to find the right one.

No type number? Then compare three things with your current battery: where it sits on the bike, the voltage and the connector. All three must match.

Not sure? Send a photo of the label via WhatsApp and we'll look up which battery fits.

A battery only fits the holder it was made for. Most of our batteries sit under the rear carrier; there are also batteries on the frame, inside the frame and behind the seat tube. So a rear-carrier battery never fits a bike with a frame battery, even if the brand and voltage are the same.

An original battery comes from the brand of the motor system, such as Bosch or Shimano. A compatible battery comes from another manufacturer, but is made for the same holder and the same motor. It is usually cheaper.

A compatible battery isn't always ready to use straight away. Some models need an update before your display shows everything correctly; the product page says whether that's needed. On some systems a compatible battery first has to be paired or registered with the dealer computer on the bike's communication network (CAN bus) before the motor accepts the battery and gives assistance. Have a bike mechanic near you do this.

Often you can, as long as the position, voltage and connector stay the same. Capacity is given in watt-hours (Wh): voltage × amp-hours. A 36 V, 14 Ah battery therefore has 504 Wh. More Wh means more range with the same use.

Do check the dimensions: batteries differ in size, and the higher the capacity, the bigger the battery usually is. So measure the battery holder on your e-bike and compare it with the dimensions on the product page, to be sure the new battery fits.

In most cases, yes. A compatible battery works the same way as the original and usually has exactly the same charging port, so your plug simply fits.

One exception: some manufacturers give the replacement battery a universal round charging port. A matching charger is then included, or you need to buy one separately; the product page says which. If you choose a battery with more capacity, your own charger still works, but charging takes longer.

Is the item in stock, and do you order and pay before 14:00 on a working day? Then it leaves the same day. Orders that come in later or at the weekend are shipped on the next working day. You always see the shipping costs at checkout; see our Shipping and returns page for the rates.

You can't order an out-of-stock item straight away. On the product page, enter your email address and click "Keep me informed", adding a question if you like. We'll then let you know whether and when we can deliver it, and at what price.

You can return it within 30 days, even if you've already tried it. Returns from the Netherlands and Belgium are free; from other countries you pay the return shipping, unless we made a mistake. The item must be undamaged and come back in its original box. Email your order number to info@azparts.nl and within 1 working day you'll receive a return label (Netherlands and Belgium) or the instructions for your return. Our technicians check the item on arrival; after that we refund you.

Charge your battery at room temperature, between 10 and 25 °C, and never below 0 or above 45 °C. If you don't ride much, charge it at least once a month: a battery that runs completely flat can be damaged beyond repair. So never store it empty either, for example over the winter, and keep it out of strong sun and freezing cold.

Never put it in household waste: that's not allowed, and a damaged lithium-ion battery can cause a fire. Hand it in at your local recycling centre or at a bike shop that takes part in a battery collection scheme (in the Netherlands: Stibat).