Crap - mine is a rack mount - APC 2200 with six or eight batteries that slide into the case - thigh fit when they're not damaged. My batteries aren't overheating yet, but they don't provide near the run time I thought they might. I'll have to check them soon.
I think my 2000 is rated at something like 7 minutes at full load. Not much, which is why it's now sporting a set of four deep-cycle sealed 75AH batteries instead of the stock (stuck?) 18 AH ones. For about 50% more money, and a lot more space! -- Jim
