High power, slimline rack battery
REV Rack 48v 11.5ah pack
Rack batteries are designed to mount over the rear wheel, and are adjustable in height to suit bikes with 24-29” wheels. They can be mounted over smaller wheels too, but will sit a bit high.
Rack batteries are necessary with cruiser-style (curvy) frames, or frames with a small or no diamond (such as step-through frames). This position leaves the bulk weight quite high over the back of the bike, which is not ideal for the best balance of the bike. This can be ok for general commuting or leisure riding, but we generally recommend frame-mounting batteries wherever possible, especially for sporty applications.
Rack batteries cannot be used on Dual Suspension MTBs, without some modification to the forward mounting points.