Thank you for viewing. This is a set of a fan unit and a 10V lithium-ion battery for AC220/AC221, both brand new and unused. I planned to use them for work, but ended up not needing them, so I am selling them. The battery was charged only once for confirmation immediately after purchase. The box is slightly bent from storage, but the contents are not affected. Please note that the packaging will be simple. If you have any questions, please feel free to ask in the comments section. - Model: AC220/AC221 - Battery: AC210 Li-ion 10V - Fan Unit: AC220/AC221 FAN UNIT - Voltage: DC 10V - Size: 295x295x50mm