... Output: DC 2.8-8.7V 250mA 4 in 1 USB Universal Charger for Car and Li-ion batterySpecifications ... then the power plug.Advantages1 with short-circuit protection, over current protection, over-voltage protection, overload protection, constant pressure function, ... selling various mobile phone chargers. There are more than 300 employees in our company. We attach importance to product development, quality ...