Please note that the mains voltage of the AiroDoctor S10 (Mini) battery is 5V/2A. This means that only a power supply/charger with 2 amps will work. If you use a power supply/charger with only 1 and 1.5 amps, the power is not sufficient. You will also find all the necessary operating instructions in the AiroDoctor S10 (Mini) operating manual.