18650 battery manufacturer / supplier in China, offering 21700 3.7V 6000mAh Lithium Li-ion Battery Cell 21700 Battery 5000mAh, High-Performance Polymer Lithium Battery 402030 3.7V 200mAh with CE UL, High Energy Lithium Battery 402030 200mAh 3.7V Lithium Cell for Power Devices and so on.