TR-001 Battery Charger Specifications Model: TR-001 Input: AC 100 ~ 240V (50/60Hz) Output: DC 4,2V ~ 500mA Dimensions: 8,4 x 4,5 x 4cm (C x L x A) Weight: 158 grams Plug: UK 2 Slots Charger for Li-ion IMR LiFePO4 10430 10440 14500 16340 17670 18350 18500 18650 Lithium Batteries Small and Lightweight, high efficiency and reliability Can charge battery quickly and safely Quick charge with automatic constant current control, prevents battery from overcharging, short circuit, over-current and anti-reverse . Tips If battery to charge is Li-ion, please slide side switch to 4.2V, if battery is LiFePO4, please slide to 3.0V. Follow the symbol direction of the positive and negative polarity to put the battery into the charger, the indicator LED is red under normal status; when reversed , LED is green and can not be properly charged. After fully charged, LED will change from red to green. Please feel free to contact the seller if you have any questions.Features: