Polymer Li-ion Battery manufacturer / supplier in China, offering Lithium Ion Battery 421113-43mAh Pl412120h Li-ion Battery for Huami Amazfit Gtr 42mm A1909 A1910 412120 Pl412120V Smart Sport Watch Batteries Warranty + Track N, Lithium Ion Battery 402020-130mAh 3.7V 302020 402020 502020 150mAh 602020 702020 802020 902020 102020 Rechargeable Li-Polymer Li-ion Battery Lipo Batteries, Li Po 502540 Battery 500mAh 3.7V Square Lipo Polymer Lithium Batteries for Face Slimmer Blackhead Massager Rechargeable Cell 501447 280amh and so on.