GTF 14500 Battery 3.7V 600mAh 14500 Rechargeable Li-ion Batteries AA Battery for LED Flashlight Headlamps Toys Torch Mouse Cell - AliExpress
Amazon.com: Taken 16650 Rechargeable Battery, 16650 Battery 1800mAh 3.7V Li-ion Rechargeable Battery with Button Top for Flashlights Torches - 1 Pack : Health & Household