... current output and extend the lifespan of LED. Lithium Ion battery with high volume could guarantee about continuous 3 hours ... 4V,2200mAh rechargeable Li battery 7.4V,4400mAh rechargeable Li battery 14.8V,4400mAh rechargeable Li battery ChargerAC/DC adaptor ... Ningbo) Optoelectronic Technology Co., Ltd. focused on customers' requirements for LED lights, especially LED floodlights, LED tubes, LED bulbs ...