I get about 2.5 to 3 hours, compared to barely 1.5 to 2 hours with the OEM battery that came with my Toshiba laptop.
It fit in my wife's laptop just fine. Took a charge and holds it. Far cheaper than the official replacement. The batteries in general for this model seem not very good, if this lasts a year I'll be happy.
I was pleasantly surprised as to how long the battery charge lasted. I am running Windows Vista 32-bit OS and with my wireless turned off and the display brightness down the battery will last 3+ hours. If you are looking for a good replacement for your Toshiba battery pack, I recommend you stick to this factory replacement. Hope this helps inform your decision a little better. Good luck.