3.7v 1500mah 18650 Li-ion Battery + Charger For Remote Control Helicopter Airplanes Car Boat Gun Toy 18650 3.7v Battery Sm Plug - Parts & Accs - AliExpress
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