IBM ThinkPad T43P 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.
After replacing my old battery with this one, I'm back at 5 hours again. At the time I purchased it, I believe it was at least $50 cheaper than a new battery straight from Lenovo, so this was money well spent.
I was a little wary about purchasing this, but I was not disappointed at all. It lasts about 3 hours with full use of the computer with about 6 programs open simultaneously, and have had no problems with it.

