18650 Rechargeable Battery, 3.7v Lithium Battery, Li-ion 18650 Rechargeable Battery, 1800mah Large Capacity Button Top Battery, For Flashlight, Doorbell, Headlight, Remote Control Car And More - Temu
Li-Polymer Battery 3.7V 1500mAh
Lithium Ion Battery - 3.7V 2000mAh : ID 2011 : $12.50 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: ICR10440 Lithium Ion Rechargeable Battery 3.7V 350mAh with USB Charger (2pc Button top +Charger)(They are not AA Size Battery) : Health & Household