52v 10.4aph Tri-Metal Battery in hard case with key lock.
52 Volt 10.4 Amp Hour High Capacity Battery
The hard plastic shell mounts to your bike where the waterbottle would go, and stays locked to the bike unless you remove it with a key. Range for batteries always varies depending on rider/bike weight, terrain, speed, etc.. but this battery should get you down the road 30 miles or more on a charge. Includes 2amp charger. Made with premium quality cells.