POWERSONIC PSH1280F2 12v 8.5AMPS F2 TERM BATT
Great for UPS replacement battery
most APC, Best, and PowerWare UPSes will use a varriant of the 12V, 9 amp hour Panasonic battery. Don't bother trying to hunt it down, it is an OEM product only. This is the absolute best replacement battery on the market. PPS is great to order from. I have had sevral orders thru them and them thru Amazon. No worries. Great Cust Serv.