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UPS advice - stepped sine wave or pure?
My APC battery backup UPS needs a new battery, and I'm considering getting a new unit, as mine is approaching 5 years old. I've been reading that standard UPS devices put out a stepped sine wave that can cause issues and possible damage or reduced lifespan with newer Active PFC Power Supplies and LCD monitors. Cyberpower make some that output a "pure sine wave" that is supposed to be better for PFC hardware. Is this really an issue I should be concerned with?
There are 2 UPS units from Cyberpower I'm looking at - 1 has 12 outlets which gives me 2 more than I currently have, which I could definitely use. But it only puts out a standard stepped sine wave. Then there's a similar one with only 10 outlets that outputs a "pure sine wave". Is it worth getting the pure version and losing 2 outlets, or is it not as important as some are saying? I want to do what's best for my equipment of course, especially because I tend to get random power outages for anywhere from a few seconds to a few minutes fairly often - enough to warrant owning one of these units.