This is an INCOMPLETE, AS IS, PARTS MACBOOK.
It was only tested briefly and may have other issues than those described here.
It is meant for experienced technicians and may not be a simple fix.

This macbook boots to MAC OS Catalina, but the battery 
is bad and needs to be replaced.
It was only tested briefly and is not guaranteed for all functions.
No Charger.

13" Macbook Air Mid 2012
OS Catalina
i7 3667U CPU, 8GB RAM, 512GB SSD
Expect cosmetic wear.
It will be packed carefully.