GTF 26650 8800mAh Lithium Battery Rechargeable Batteries 26650 8800mAh Battery for High Power Flashlight - AliExpress
Amazon.com: Rechargeable Lithium Ion Battery Pack - VIDAR 7.4V 8800mAh High Capacity Li-ion Battery Pack with JST PH2.54/2P Plug-in(Customizable) for Electronics,Toys,Lighting,Equipment : Health & Household