Lithium battery charger  A special charger for electric bicycle lithium battery featuring small volume ,light weight, efficiency and convenience to use  Adopted with international pro-environmental chip which is a flyback pulse with modulation (PWM) part to meet the power requirements for energy star stipulated by European and American environmental protection agencies towards consumer electrics  Featuring four-part form charging mode, that is, restoration, constant current, constant voltage and floating charge to protect battery and prolong service time.Having such protection functions as shot circuit, guard against anit-connect  Over current and over voltage  Temperature self-adapting function  Engineering plastics shell of pro-environmental inflaming retarding ABS  Two types of input voltage;220v and 110v