52v 17.5 amp Tri-Metal Battery in hard case with key lock.
52 Volt 17.5 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 50 miles or more on a charge. Includes 2amp charger. Premium Quality Cells.