This is an old Acer Aspire 2920. I found it for a fiver on facebook marketplace as 'not working'. I was able to get it working again by replacing the dead hard
Cheap Battery | Replacement Acer Aspire 2920 Series Battery | Acer Aspire 2920 Series Laptop Battery
Acer Aspire 2920-3A2G12Mi Laptop Original 6cell Battery - Laptop World | Affordable Laptop Batteries & Accessories