[Independent Charging Channel] The Cityork universal charger has an independent charging channel that can charge any number of batteries and is suitable for 1 to 8 AA / AAA nickel metal hydride batteries (nickel hydrogen / nickel-cadmium batteries only). LCD display charger: The intelligent LCD screen of the AA/AAA charger shows the entire charging process of the battery. 'CHG' means load, 'Error' means battery damage or installation errors and supports battery repair function. [Two Quick Charge Methods] 5V/2A Micro USB and Type C input (Note: only applies to 2.0A adapter, do not use 1.0A adapter) Replacement input port, improves the adaptability of the charger, offers more choices, save battery and save long waiting times when charging. [Safety Protection] MCU control, multiple protection, overcharge, overcurrent, overvoltage, overheating, short circuit protection. Constant current charging protects the battery from current fluctuations.