IBM ThinkPad T42P Battery are made from a grade cells and highest quality parts, the IBM laptop battery are tailored made according to the original size, whether the battery appearance, size and quality are the same as with the original. Every laptop battery should be under strict quality control including filtration and safety testing of voltage,capacity and battery core before leaving the factory, and has passed the authentication of CE, UL, EMC, CQC,ROHS, etc.
I needed a battery because my old one had no charge. This one works well. It lasts about a couple of hours before it dies. It was easy to install and it is better than nothing.

