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In UPS Replacement Battery & Accessories

OEM replacement; easy to find correct part # on NEWEGG. Replaced 4yr old battery in APC XS-1000.

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!