Specifications: Input Voltage: DC 5V Output voltage: 4.25V ( Lithium-ion Battery ) Max charging current: 0.5A Dimension: 12.3 x 7.5 x 4.0cm
Lithium-ion battery charging 1. Use in indoor or car, plug USB cable to socket, then connect the cable to an USB DC 5V power source 2. Remove the lithium-ion battery from device, check the voltage rating and connectors locations 3. For better options, disconnect USB plug first. 4. Depending the locations of battery connectors, you can adjust vertical or horizontal position by pressing on each side and shift ti secured connectors to the charging contactors and battery connector 5. This charger detects the battery polarities, voltage and start charging once the connections are correct and secured.