When my APC UPS indicated a replacement battery was need it was a no brainer to go to APC and buy the right replacement. The replacements I've purchased in the past have always performed great with no concerns about the level of customer service if needed.
Paid quite a bit more to buy from APC to be assured of getting a good battery. However, after installation it shows only l min of runtime. I called APC tech support after which I performed all the tests. Still only 1 min. Have to work with APC further to try to resolve this and determine whether it is faulty battery or UPS.
I am a home user with a technical background. Despite that background, it took me much longer to install than I consider reasonable. The causes: It is not clear at all that the hard, clear plastic shipping protectors on the terminals must be removed before installation! They are of such high quality that they look like permanent parts of the terminals. Combined with an overly short Red wire in my UPS unit, this had me going for some time. A small insert in the package saying that they must be removed would be very helpful. The instructions actually included have no indication that this is the first step. A separate issue is that this is the second replacement in 3 years for this unit - which actually has a very low load connected to it. My other APC unit, smaller, older, much more heavily loaded has not required a replacement batter in about 5 years ... hmmm.