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Conversion Kits Batteries Bundles Parts All Products FAQ Contact

Pure Power E bikes

Trusted UK supplier of e-bike conversion kits, 72V batteries, bundles and replacement parts. Clear specs, compatible components and support to help you build with confidence.

Conversion Kits Batteries Bundles Parts All Products

Free 24-hour / next-day tracked shipping as standard on every order

1 year warranty on conversion kits and batteries

30-day return policy

Friendly customer support before and after you order

Conversion Kits

Rear wheel kits for fast, powerful e-bike builds.

Help

Quick answers

Will this work with my bike?

Check wheel size, dropout width, brake type, axle fitment and connector type before ordering. For kits, send your wheel size, brake setup and a photo of the rear dropout. For displays, throttles and batteries, send a clear photo of the plug you need to match.

Which battery should I choose for the 2000W or 3000W kit?

For a 72V 2000W setup, the 72V 20Ah hard case battery with 60A BMS or the full 2000W kit and 20Ah battery bundle is the simplest match for most lighter builds. For a 72V 3000W setup, choose the 72V 25Ah soft case battery with 80A BMS and battery bag, or the 3000W kit and battery bundle, because high-power setups need stronger current support.

What BMS current do I need?

The battery BMS continuous current should be equal to or higher than the controller current. A 45A controller needs at least a 45A continuous BMS, although 60A or more gives better headroom. A 60A controller needs at least a 60A continuous BMS. An 80A controller needs an 80A continuous BMS. Do not rely only on peak BMS ratings, because an undersized BMS can cut power, overheat or shut down under load.

Can I use a 72V battery with any kit?

Only use a 72V battery if the controller and display are rated and set up for 72V. The 2000W and 3000W kit listings can support different voltage setups, but the battery voltage must match the controller setup you are using. If your controller is set up for 48V, 52V or 60V, do not connect a 72V battery unless the controller is confirmed suitable.

What is the difference between the 72V 20Ah and 72V 25Ah battery?

The 72V 20Ah battery is the hard case option, includes a 5A charger and has a 60A BMS. It is better for lighter builds, shorter rides and 2000W setups. The 72V 25Ah battery is the soft case option, includes a battery bag and 5A charger, and has an 80A BMS. It is the better choice for stronger 72V builds, the 3000W kit, heavier riders, hills or anyone wanting more current headroom.

Should I choose the 2000W or 3000W conversion kit?

Choose the 2000W kit if you want a strong upgrade with lower current demand and an easier battery match. The 72V 2000W bundle is the easier option if you want the matching kit and battery together. Choose the 3000W kit if you want the higher-power setup and are using a battery/controller combination that can handle the current. The 3000W kit is better paired with the 72V 25Ah 80A BMS battery or the full 3000W bundle.

Are the high-power kits road legal?

High-power kits such as 2000W and 3000W setups may be for private land only depending on local rules. For UK public-road use, buyers should check e-bike regulations and choose a compliant setup. Always ride within the law for where you use the bike.

What should I send if I am unsure before ordering?

Send your bike model, wheel size, brake type, dropout photo, current battery/controller details and close-up photos of any connectors. For battery questions, also send the controller voltage and controller current rating, for example 45A, 60A or 80A.

What is the returns policy?

Returns are accepted within 30 days. The item must be returned unused, complete and in resellable condition.