Universal Lithium-ion polymer battery charger for 4.2V,8.4,12.6,16.8V,21V,25.2V li-ion battery pack. Product Name: Univesal wall or ... 3.7V,7.4V,11.1V,14.8V,18.5V Lithium-ion polymer battery pack Product Feature:- Input voltage: AC100-240V, 50/60Hz- Charging ... optional- Ouput over-volatge protection, output short-circuit protection, reverse-battery protection- Hi-pot test: AC3000V, less than 0.5mA, 5 ...