IN4202000 is a high power density universal 3.7V lithium ion battery charger for 2-cell Li-ion or Li-polymer 18650 batteries capable of operating with an input voltage 90-264Vac. The 3.7 volt li ion battery charger operates with CC(constant current) mode and CV(constant voltage) mode profiles. Trickle charging operation is also provided. The li-ion battery charger 3.7V features excellent EMC performance, Average Efficiency > 85%, Ambient temperature range -10℃~40℃.