APC Back-UPS NS 1080VA UPS Battery, Replacement 12V 7.5Ah, 2 Pack

I noticed at the last power outage my APC NS 1080 went down almost immediately. When the power was restored I noticed the original batteries were not holding a charge. These replacement batteries were an exact fit and charged up as expected. You just need to remove the original sticker labels to remove the batteries from the mount and then swap with these replacements. Very reasonable compared to having to buy OEM batteries.

I received two batteries, but no other information. Online I got some information about how to remove the old batteries, but there was a part between the two batteries that did not come with the new batteries, and the old batteries were glued to this connecting part. It took some effort to remove the batteries from the part, and to "install" the part onto the new batteries. When installed the new batteries were not recognized until I removed and re-installed the part between the two batteries, then put the batteries and connecting part into the UPS again. But the UPS still was beeping, I called APC and they led me through resetting the UPS, then it stopped beeping and has worked, now for a few weeks. Someone needs to include instructions for replacing the batteries, with information on changing the connecting part from the old batteries to the new batteries, and resetting the device.