The APC RBC8 replacement batteries is specifically designed for high rate UPS discharge applications, where high power output is required over short periods of time.
Reviewed by 2 customers
The warranty was for 1 year. Guess how long they lasted? 1 year, 4 months. After that time, the batteries had swollen so badly I could hardly get them out. (Had to remove the top cover and break apart the double-stick tape from between the batteries.) And the contacts were so corroded as to be useless. Considering this was roughly half the cost of a brand-new UPS, we're very disappointed. Next time the solution will look different, even if it's just more batteries from a local battery shop.
Although I couldn't be sure it would fit/connect from the description/info provided, it did. Now we have new life in an old device again!