NexgenCover TrustFire TR-001 AC100-240V Multi-functional Charger for 18650 18500 17670 16340 14500 10440 Battery Item specifics Type: 18650 Input Voltage: AC100-240V / 50-60Hz Output: 4.2V / 500mA Material: ABS Compatible with: 18650, 18500, 17670, 16340, 14500, 10440, 10430 rechargeable li-ion battery(not included) Size: 130 x 55 x 30mm/5.1 x 2.2 x 1.2in(L x W X H) Cable Length: 1000mm / 39.4in 4 Tips to Extend Your Lithium Battery Life