Personally, I'd only do that for non-mission critical UPS units. You can find kits online that will provide you everything you need. If you are on a budget, and you don't mind being adventurous, you can buy the individual batteries that make up the battery pack and rebuild it. The model and serial numbers are located on the rear panel of the unit. I typically use 3rd party batteries for small units (single batteries), but I don't like 3rd party battery packs (made up of multiple batteries) for business use. Note the model number and serial number and the date of purchase. If its for business use, I'd replace the battery pack with a genuine APC. Only reason I'd replace the unit itself is if you suspect some problem beyond the batteries. If I looked it up right, this UPS uses an RBC27 battery pack, which is $341 on Amazon (genuine APC). Just use the 'or choose a model from the list' pull downs and select the right unit.) If you have equipment issues, reach out to our Technical Support team at 80 option 4 and we will.

We stand behind our products, and will provide you with the parts and/or services needed to keep your equipment up and running. (Don't bother trying to use the part where you enter the model number very annoyingly never works. Even if your equipment is out of warranty, it doesn’t mean you’re out of options.

You just need to input the model number and serial number.

You can determine the age of your APC UPS by using their Warranty Status lookup page.

Apc ups serial number lookup warranty