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I bought mine reconditioned with new batteries and it solved the problem of the frequent power spikes and drops provided by Puke (Duke) Energy that would cause my whole-house water sterilizer UV light to stop, go into protection mode and beep incessantly waiting to be manually reset. Other in-line units from APC, etc. would not stop the issue as they take too long to switch to battery. With a double-conversion UPS its constantly running off battery like a laptop. Problem solved. I did buy a refurb unit and I hope it lasts, especially since now its in some harsher conditions.
Verified purchase: Yes | Condition: Pre-owned
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