E-bike batteries lithium battery packs matched to your e-bike system

• Down-tube batteries — mounted on a rail on the down tube, removable with a key; the most common format on aftermarket and value e-bikes.
• Rear-rack batteries — integrated into a rear carrier; common on city and step-through e-bikes.
• Integrated (in-tube) batteries — slide into the frame’s down tube; housing and mount are specific to the frame design.
• Seat-tube / bottle batteries — compact packs behind the seat tube or in a bottle-shaped housing.
• Range extenders — secondary packs where the drive system supports them.

A battery is never “universal”. Each pack is built to your bike’s system voltage (36 V and 48 V are common requests), the capacity you target (specified per SKU), the discharge current the controller draws, the connector and communication the controller expects, and the mounting rail, lock and housing of the frame. Cells (typically 18650 or 21700 lithium-ion), cell grade and supplier, BMS protections and charger are specified and documented per SKU. Packs that must work with a proprietary branded drive system are only quoted where that system’s owner allows it; we do not copy branded battery designs.

No e-bike battery on this site is presented as certified. Every pack follows a documented process agreed per SKU and per order:

1. Transport testing. Lithium-ion batteries must pass UN 38.3 tests and carry a test summary before they can be shipped; sea and air shipments are packed, labeled and declared as Class 9 dangerous goods. Large packs face extra restrictions by air.
2. Market safety standards. Buyers confirm which standards their market or channel requires — for example UL 2271 (batteries for light electric vehicles) and UL 2849 (e-bike electrical systems) in the US, where some cities such as New York City require them for e-bikes and batteries sold there; EN 50604-1 and the EU battery rules in Europe. Retailers and marketplaces may ask for more.
3. Laboratory and scope. The exact pack (cells, BMS, housing) is tested by an accredited laboratory agreed by buyer and supplier; any change to cells or BMS can require re-testing.
4. Documents and labels. Test summaries, SDS, labels, warnings and manuals for your market are prepared and approved by your team before shipment.

Labeling, claims and the decision to sell a pack in a given market are the brand owner’s responsibility. See the general export compliance process.

E-bike brands (original fitment and spare packs), authorized service and repair partners, and distributors serving bike shops. Consumer sales are not offered. Packs can ship with your chargers, keys and branded housings through OEM.