This rechargeable battery pack in LiFePO4 chemistry can be tailor made for most light electric vehicles, such as most powerful LEVs, such as electric bicycles, electric unicycles, electric tricycles, electric scooters, electric boards, electric wheelchairs, Stereo Systems, Boats & RVs, Hydraulic Lifts, Winches, On-board Electronics, Golf carts, Electric resort cars, Marine, Electric utility vehicles, Electric Boats, Solar/Wind Power Systems, Medical application, Electric forklifts, RVs, Scrapers, Electric Sightseeing Cars, Toy Cars, Mini-trucks, The Transportation without Driver, etc.