Amazon.com: Battery Packs Lithium Ion Battery Pack 3.7V 4400 mAh : Health & Household
Amazon.com: Rechargeable Lithium Ion Battery Pack - VIDAR 3.7V 5200mAh High Capacity Li-ion Battery Pack with JST PH2.54/2P Plug-in(Customizable) for Electronics,Toys,Lighting,Equipment : Health & Household
3.7V Lithium Polymer Battery Cell Manufacturers and Suppliers based in China