Amazon.com: 3.7V RC Battery 500mah - FPVERA Rechargeable Batteries 2pcs Li-ion Battery Double-Sided Tumbling Rc Stunt Car for Remote Control Toy Cars E35 DE38 DE40 DE50 with USB : Toys & Games
Amazon.com: 3.7v 14500
Amazon.com: 14500 3.7v
ICR17500 1100 mAh 3.7 V Li-ion Battery for LED Torches, Flat Top Battery, Pack of 3, PKCELL: Amazon.de: DIY & Tools