New 3.7v 4000mah 18650 Li-ion Rechargeable Battery Is Used In Shavers, Outdoor Headlights, Portable Fans, Remote Controls, Etc. - Rechargeable Batteries - AliExpress
BRC 18650 3.7 V 4000mAh Capacity Li-Ion Battery for LED Flashlight Battery Gimbal Battery Toy Controller Transmitter - AliExpress