This smart battery charger LTC1760IFW#PBF charge controller from Linear Technology protects your batteries from operating outside its safe operating area. Its output produces a current of 4000 mA. This battery gauge has an operating temperature range of -40 °C to 125 °C. This device runs on Li-Ion|Li-Pol|NiCD|NiMH. This device has a minimum operating supply voltage of 0 V and a maximum of 28 V.