1. Use one Size AA battery and you can charge up your mobile phone any time, anywhere.

2. Unscrew the bottom cap and put one size AA battery inside the product. Please make the correct the polarity of battery is positioned inside the battery compartment. Select the right connector to connect the plug to the mobile phone to be charged and the LED lights on which indicates the status of charging. AA batteries can be alkaline and rechargeable batteries.

3. When charging, blue LED lights on. When battery voltage is low or below 0.9V, red LED lights on and indicates the battery power is not enough.

4. When the battery power is full or fully depleted, the charger will automatically off.