Bjäre is the e-kit for you who need to use your bike longer distances at a time, or for you who just doesn't want to bother charging it that often.
 
The kit is easy to instal and only has one cord. The battery is designed lika a water bottle, and is easy to put on and to take off. The battery can also serve as a spare battery to charge your phone, and it has a built-in flashlight.
 
You connect the kit to your phone through an app, where you can also trace the kit, and your bike if it gets stolen.