Lithium Ion Polymer Battery - 3.7V 500mAh | TinyCircuits.com
Amazon.com: PKCELL ICR18500 Battery 3.7V 1400mah Li-Ion Rechargeable with Button Top 6PC(They are not AA Size Battery) : Health & Household
Tenergy Li-ion 3.7V Arlo Camera Replacement Batteries, 4pk - Tenergy
Li-Polymer Battery 3.7V 1000mAh
4-Pack of INR 18650 Red Lithium-Ion Rechargeable Batteries - 3.7V 2200mAh | xUmp
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