1. Adapted battery, AA/AAA 5/7 1.2V nickel and cadmium battery 2. Power adapter: Input voltage: AC110-240V, output voltage: 12V, current: 2A 3. Input voltage of the 16 slot charger: 12V Input current: 2A 4. Charging current: AA battery: 400MA, AAA battery: 250MA 5. Charging: Connect the power, install the battery, and when all the batteries are fully charged, the screen is shown in the following picture.