Charge up to four rechargeable battery packs simultaneously. Includes four 800mAh rechargeable battery packs to easily convert controllers from battery-powered to rechargeable. Easily see if each battery pack is ready with individual LED charging status indicators. Short-circuit protection inside charger with overload protection inside each individual battery pack. Compact, portable design with rubber feet to avoid slipping. Included charging cable allows for flexibility in setup. 1-year limited warranty.