Efest Box Mod IMR 18650 Battery 3000mah 3.7V Flat Top | Efest IMR 18650 3000mAh Battery
Amazon.com: SHENMZ 4-Pack Battery for 3.7V 3400mAh Flat Top Battery, Rechargeable, 2 Bay USB Battery Charger for Flashlight, Camera, Small Fan, Sound Equipment. : Electronics