... Name: Universal 4.2V adapter for charging 3.7V li-ion battery Product Feature ... : AC100-240V, 50/60Hz- Charging mode: CC, CV- Charging current: 1.2A at CC mode ... charing voltage: 4.2V+-1% - Charging state indicator: Red - on charging, Green - full charge or idle ... - US plug, EU plug, UK plug, Aust plug optional- Ouput over-volatge protection, output short-circuit ...