There are all sorts of categories of emergency power, but I’m narrowing my focus today to a backup battery for lights and small appliances.

Many of you have a backup power supply for your computer. It has enough electricity stored to allow you to shut your computer down safely when the power goes out. If you have a large enough backup, it may allow you a few minutes of using your computer before you shut it down. Depends on the capacity of the battery and how much current your devices draw.
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