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I used it in an APC 1000-series instead of the 123, hopefully for longer runtime. Plugged it in and it works fine.

APC official battery. It shipped fast, as we're in the same region as one of the Newegg shipping centers, effectively overnight. Installed just fine. There didn't appear to be any difference between buying from Newegg vs ordering through our rep at a competitor or directly through APC.

OEM Quality Same Dimensions as Original

It does what it says. I have a few of these and I checked them out with a multimeter and this thing holds a steady 120VAC while the circuit it's on is subjected to rigerous varying demand. I don't know if I'd use this in a commercial environment but it's good for home use. I would especially recommend if you live in an older building, a home where the power situation might not be perfect, or have high power demands on a particular circuit. I use to have lots of issues with electronic devices dying over the years in appartments I lived in. A year, maybe two, on components that, given their light to moderate use, should have lasted much longer. Especially powersupplys. I started litering these things and their bigger more expensive cousins over my house and devices stopped dying. I even put this behind a 300watt AB powered subwoofer and noticed a huge difference in output (analog amps love clean power). SmartUPS works for a PC, but most put these on the other elec devices!

Fit right into the UPS system without having to power the network servers down. Hot swappable.

Comes complete with all connectors and is pre-assembled.

Got here in 2 days. Put it in and it is working well so far. Got 7 years of continuous use of the one it replaced. Hope to get at least this long with these new batteries. Came in at 85% charged. After plugged for an hour it went to 100%. So, no issues.

Ease of installation, APC brand replacement batteries still the best !

Works as it should.

No issues.

A must have in every democrat run blue state. Democrats destroy everything they get control of especially the grid & in my far left state Massachusetts the power is anything but reliable. My son was complaining that at his college in Boston his PC was shutting down 3 times/day. This baby ended that problem. No matter what kind of windmill or solar panel garbage democrats throw at my sons PC this baby knocks them down & puts out clean & pure 120 volts AC.

Delivered right on time. Easy to remove old battery, this one slides right in. Comes with a slip to indicate that all pre-shipping tests were passed. Looking forward to a few years of trouble-free UPS-ing. Easy, free path to ship the old battery for recycling.

simple and effective, seamlessly cancels out my apartments shoddy inconsistent wall voltage.

Exact fit.