When the interior battery becomes completely drained, where can you purchase a new one?
In the description, it lists the battery replacement part number RB1280X2A for this model. I pick these up thrifting for $10 because the battery is done and people don’t want to take the time to remove two screws and buy a $25 battery.
Search that serial on the mothership and you’ll notice small business battery companies have the same rating at a fraction of OEM price. You don’t need to pay CyberPower’s absurd prices IMHO. I never do 
Many thanks for that valuable information. It makes good sense
You are so welcome!
If the posts are the wrong size (and you did your diligence matching part/model numbers), send them a message and they will send you adapters for free.
This has a small benefit of granting more room when replacing them. Some of these UPSs have short wiring and it makes the swap a bit awkward 