Description Small Volume single circuit volume is 2 2 x 1 8 x 1 0cm Complete Function boosting lithium battery charging undervoltage protection output short circuit protection cellphone charge identifying circuit Low Static Current whole circuit only consumes 0 1MA without connecting load don t need manual operation It will standby if without load and only consumes electricity 0 1MA Circuit has high integration level external circuit is simple so it has high reliability Charging Voltage Current DC 5V 1000mA when charging red light is on when fully charged green light is on USB Output Voltage Current DC5V 1200mA please don t connect more than 1200mA appliances for long time Charging Interface Micro USB portSingle Circuit Board Size 1 8 x 2 2 x 1 1cmNotice 1 Don t use output to connect more than 1200mA devices otherwise PCB will burn2 Please connect battery with B B two ports the polarity must be right transposition will burn the chip Package Included 1 x 5V Lithium Battery Charger Step Up Protection Board