Bests & Worsts Reviews from Amazon

Perfect replacements for my APC UPS (I believe it's an XS BX1300GX) as a slight upgrade in run-time from the stock APC pack which had a pair of 7 Ah batteries. Simply pull the factory pack, peel off the labels carefully, disconnect the friction-fit terminals, and reverse with the new batteries to reassemble. I've used ExpertPower batteries as well for expanding my Goal Zero Yeti 400 from the single 33 Ah battery that comes in the unit to an additional 4 batteries wired in parallel with the built-in Power Pole connectors that greatly expanded capacity for longer run-times while I'm operating without a main source of AC. They seem to be quality-made and haven't given me any issues, holding charge and cycling without missing a beat.