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by PaulKeeble
184 days ago
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Lead Acid as far as I know is about $500 per KWh of usable space due to their depth of discharge being limited to about 50% and then they last about 3 to 5 years if they kept within their 500 cycles at most. Whereas a LiPho battery will last 10-15 years, 6000 cycles and costs about £120 a KWh. So I have no idea how UPS based on lead acid is ending up cheaper, its not based on the battery tech cheapness. |
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Sure, up front you're paying very little for that box that can run your PC for an hour.
But over 2-4 years you'll have to replace that UPS after it fails catastrophically in really dumb ways, and that's if you're lucky and it doesn't also burn your house down, whereas a proper storage system will last for a long, long time with more capability.
In my business I've never had a deskside UPS live longer than that.
And yes, we don't buy the ultra expensive ones. That's true.