Original Genuine IBM Slim Ultrabay Laptop Battery for IBM ThinkPad T20, T21, T22, T23, T30, R30, R31, R32A20m, A21m, A22m, A30, A31 laptops
This is not the main laptop battery, it is the secondary battery that goes the DVD slot of your laptop
Tested and holds good charge
If you have question, please ask before buying
Thank you