【LED indicators】 Four LED indicators, 4*25% battery power. The LED lights is to inform the remaining power, which can help you avoid excessive use and extend the battery life. No memory effect, charging and discharging at any time will have no effect on the battery. It is environment-friendly battery
【Certification Guarantee】 FCC, CE and RoHS certified. Built in protective functions against potential damage caused by incorrect voltage, overcharge or overdischarge, short circuit, overheating to keep your battery and device safe