Streamlight 18650 3.7v 2600mAh Battery SL-B26 Protected with USB Charg – Battery World
Single Slot Li-Ion Battery Charger for 18650 3.7V Rechargeable Battery
Amazon.com: PKCELL ICR10440 Lithium Ion Rechargeable Battery 3.7V 350mAh with USB Charger (2pc Button top +Charger)(They are not AA Size Battery) : Health & Household
Amazon.com: PKCELL ICR10440 Lithium Ion Rechargeable Battery 3.7V 350mAh with USB Charger (2pc Button top +Charger)(They are not AA Size Battery) : Health & Household