BASEN IMR 26650 60A 4500mAh High Drain Flat Top Rechargeable Battery – MABD Electronics
Amazon.com: 2 Pcs Battery for 3.7V 3600mah Flat Top Rechargeable Battery, with 1 Pack of 2 Slot Smart Battery Charger Set for Flashlight, Camera, Video doorbell, USB Fan and More : Electronics