Battery, Primary Battery, Lisocl2 Battery manufacturer / supplier in China, offering 3.7V Rechargeable Ultra-Thin Flexible Curved Lipo Battery Used for Smart Bracelet, Fast Charging Special Customized Curved Battery 3.7V Li-Polymer Batteries for Smart Rings, 3.7V Flexible Curved Rechargeable Lithium Ion Battery for Smart Bracelets and so on.