- Dual-channel intelligent control charger : The internal circuit of the rechargeable battery charger is dual-channel, dual-channel intelligent control circuit, which does not interfere with each other, both positive and negative poles can be charged, overcharge protection, and automatic stop when fully charged. The red light is displayed during charging and the green light is displayed when fully charged. - Battery compatible equipment Suitable for rechargeable batteries such as flashlights, headlamps, fans, digital cameras, children's toys, radios, speakers, monitoring equipment, etc. - Universal battery charger design : Battery charger input: AC100-240V 47-63HZ, output: 4.2V+0.1% 1000mA. This 18650 charger is suitable for all 3.7V batteries: 26650 22650 18650 17670 17500 16340, etc. - Dual exhaust port design : 100% real battery capacity, with PTC and PCE dual exhaust ports, can quickly discharge exhaust gas, short circuit protection function, no memory effect, anti-corrosion flame retardant shell, will not cause battery expansion, extend battery life, safer to use.