Charger description Input Voltage:100-240V AC 50/60HZ Output Voltage:14.6V Output Current:10A Connector: crocodile clip Apply to:12V 4S Lifepo4 battery pack Notice: When charging, first connector to the battery, then connect to AC; after full, cut off AC, then pull the battery plug. If you pull the battery plug first while charging, especially when the charging current is large (red light), it is very easy to damage the charger. LED Light: RED ---Charging Green---Full , Stop automatically and turn green when the battery is full . Charge mode:CC-CV First stage:CC-constant current charging, the LED indicator is red. When charging to the rated voltage, it switch to the second stage. Second stage:CV-constant voltage charging, the current gradually decrease until the LED indicator turn to green, and the battery has been fully to 90% - 95%. The battery continues to charge at a small current until it is fully . Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so