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 desktop charger for 3.7V, ... 7.4V,11.1V,14.8V,18.5V Lithium-ion polymer battery ... 2A,3A,4A,5A optional)- Full charing voltage: 4.2V,8.4V,12.6V,16.8V,21V,25.2V optional- Charging state ...