Ring | Pin Name |
Cable color | Description |
---|---|---|---|
inner ring | positive voltage | yellow or white | 5.5-9.3V DC |
outer ring | negative | black |
When a charger is connected to the mobile device, the device's system will start the charger recognition procedure by checking the charger voltage with 1 - 2 mA current. Identification is based on measured average voltage and waveform: 4.65 V - 5.20 V is identified as a special charger and 5.5V - 9.3 V is identified as a standard charger.
Original chargers are Nokia AC-15 (6V, 800mA), AC-8 (5.7V, 890mA).