I use old laptops as my primary home server instead of mini PCs because they come with a built-in multi-hour UPS and a crash cart.

Using old phones offers similar advantages, in particular if your alternative was a Raspberry Pi.

hackaday.com/2025/08/16/from-s

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@kyle All my old laptops are lucky to get one hour on their batteries. I'm not sure the laptop vs UPS battery equation works out.

@lwriemen if you price a multi-hour laptop battery replacement versus a multi-hour UPS, the laptop will win.

@kyle I meant battery to battery, factoring in battery life. I really don't have an answer. Just wondering out loud.

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