Volts, amps, and capacity made simple: convert any pack to watt-hours (volts times Ah) and you can always tell which battery really holds more energy and range.

We ship every order rather than offering local pickup or will-call. Keeping the warehouse lean is part of how we hold prices down and pass the savings on to you.

We ship anywhere in the United States, with a couple of limits to know: no international orders, no PO boxes for kits or batteries, and batteries to the continental U.S. only.

Own a bike shop? Getting wholesale pricing is simple: submit the dealer request form on our wholesale page, and we typically approve accounts within about 24 hours.

Track your order anytime: once it ships you'll get an automated tracking email, and you can view full order history by logging in or using our no-account tracking page.