I used this battery for the Older Mountain Bike conversion. This 36V 10AH battery provides you with about 360 Watts of power. Enough for about a 15 mile ride…Or more, if you don’t mind pedaling a bit as well ;-).

It also both less costly than larger capicity batteries, as well as being simple to attach to your bike if you have room on your inside of the frame.

It’s a great starter battery and includes power level lights to help you determine it’s current power strength.