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For questions about uninterruptable power supplies that are used to retain the electrical power flow to connected devices in the event of a loss of power at the source.

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Alternatives to UPS to protect a computer from unstable electricity [closed]

I have used an UPS for some years, which solved the problem, but its batteries last only for a few years, what makes it an expensive solution on the long term. … Would Automatic Voltage Regulators be a good alternative to a UPS? …
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