It is a standard 3 stage li ion battery charger 8.4V for 2 cell lithium battery pack. The 8.4V li-ion battery charger provides a compact and cost effective charging solution for 4~12AH 7.4V li-ion pack while enabling that the battery is optimally charged and guaranteeing a safe operation. The 2 cell lithium battery charger features accurate charging, excellent EMC performance, long life-span. The 8.4V battery charger can operate in ambient temperatures ranging from -10℃~45℃ at full load with model dependent derating.