This is an auction for the main unit only, with a carbon fiber finish. It requires an AC adapter with a DC5.5/2.1 plug, rated for 9-16V and at least 1.5A. However, it doesn't have to be an adapter; a DC plug will work, and you can also use a regulated power supply or a USB charger with PD or QC. The product description is quoted below: Independent rapid charging of 4 AA/AAA batteries in 70 minutes. AC 100-240V, DC 12V compatible charger. Rapidly charges 4 AA/AAA batteries with independent control. Features a refresh function to reduce the memory effect. The blue backlit LCD displays the charge/discharge status of each battery in 3 stages. Includes an AC 100-240V adapter and a DC 12V cigarette lighter socket adapter. Features a zero-volt jump start function that can charge batteries with low voltage. Specifications: ・Dimensions: 116(L) x 69(W) x 26.5(H)mm (excluding adapter) ・Weight: 108g ・Input Voltage: AC 100-240V, DC 12V ・Charging Current: DC 1.4V 2200mA (AA), DC 1.4V 800mA (AAA) ・Compatible Batteries: AA/AAA Ni-MH, Ni-Cd batteries ・Cell Count: 1-4 (independent control) ・Standard Charging Time: 70 minutes (for AA 2100mAh, AAA 750mAh) ・Delta Peak Function: Yes ・Refresh Function: Yes ・Zero-Volt Jump Start Function: Yes ・Trickle Charging Function: Yes (auto-start) ・Display: Blue backlit LCD ・Safety Features: Reverse polarity protection, overcurrent/short circuit protection, etc. Radio control AA AAA