Streamlight 18650 USB Rechargeable Lithium-Ion Battery 22101 B&H
Amazon.com: MUSIBEAUTY 3.7V Button Top Batteries, USB Rechargeable Batteries 2600mA for Streamlight X Series Dual Fuel Flashlights, Headlamps, Doorbells, RC Cars, Flashlights (2 Pack) : Health & Household