IBM ThinkPad T40 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 IBM ThinkPad T40 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.
This battery is working great: holds up more than 2 hours, which is as well as the original battery in the notebook. I am very pleased to be able to use the it anywhere again.
Prompt arrival with expedited shipping and the product does what it's supposed to do. No problems with seller.