What to Know About Keeping Backup Power Supplies Running

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Backup power supplies are only useful if they're ready when you need them. For generators, that means checking fuel levels monthly and running them under load for 30 minutes to prevent stale gas from clogging the carburetor. Batteries need similar attention—test your UPS units quarterly by unplugging them and noting how long they last. Keep spare fuel stabilizer and replacement batteries on hand, and label everything with purchase dates so you know what's aging out.