IBM 40Y6799 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.
This is a great deal on a laptop battery. It was exactly as described. I have actually bought two of these.
The charge isn't as long as the factory battery, but it is good enough. It will last about 2-3 hours on a full charge. Great price, and shipping was fast. I would recommend this to friends and family.
My original lithium battery died after a year. My husband talked me into buying the exact battery I needed from here at a half of the price and my computer is back to new! It's been several months since this purchase and my battery life is still over 3 hours! Great product - I couldn't be happier!

