Lithium and Lead Acid ChargersStable, High Efficiency, Safe, etc. Precise limit of voltage & current, qualified fully charged and avoid over charge Using aluminum heat sink, Good thermal design, can better cool the power device, Consistent with the principle of hot air flow, extend the service life The Charger protected: Short circuit protection, Over current protection, Over voltage protection. red light charging, green light charge OK, it stop automatically when the battery is