Panamax BATT1500-EXT Battery Extension Pack For F1500-UPS and MB1500 Product Details These 2U packs esthetically match the UPS’s, and can similarly be rack or tower mounted. The heavy gauge power cord is adapted with plug-n-play DC connectors for easy installation. The all metal enclosure safely houses the 8 (eight) 12V 9Ah batteries which are connected via 2 strings of 4 in serial. Features Form Factor – 2U configuration supports both rack and tower mounting. Metal Housing – Rigid metal construction allows for placement in areas with a demanding environment. Power On/Off Switch – Local power switch for manual reset & control. Back-panel fuse – User replaceable fuse which is easily accessed from the rear panel Specifications User Replaceable: YesTypical Recharge Time: 8 hoursReplacement Battery: BB Battery – HR9-12Hot Swappable