This is my review from iRobot Advanced Power System Ni-MH Battery, 3000 mAh, 17373 (Kitchen)
Works as expected. Our old Roomba battery was lasting only a few minutes at a time, so we purchased this. Now he runs for a good 2+ hours. It fixed our problem well, but I do wish the batteries would last longer or be cheaper.
Update (2013-04-01): While I still think Roombas are undeniably cool, they’re far overpriced for the amount of repairs and replacement parts users have to purchase, in my opinion. The batteries are especially bad, looking back on it.