Well, due to an accidental power glitch in my hobbyist off-grid system, the little Raspberry Pi 0 W I was using for monitoring it has rebooted. Last time I checked it had over 340 days of uptime.
I'm a little ticked off, although in fairness it wasn't really doing much, and it probably would have run forever. Also, uptime for the sake of uptime probably isn't a good practice overall, although again in this case there was hardly anything to actually update. Probably a kernel update now and then though.
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I've been thinking I need to come up with some sort of a DC UPS for Raspberry Pis and other such tiny computers. I was thinking about just floating a small 6-volt lead acid battery for this Raspberry Pi 0, but just never really got around to it.
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@toroidalcore That's what these are for: https://www.aliexpress.com/item/1005005195434497.html
I used one as battery pack for my macro lens light ring. Can dig up the recommended one if you like - there's various version of it, some good, some bad.
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@yngmar That looks handy, and the price is right.
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@toroidalcore
This is the exact link I ordered mine from: https://www.aliexpress.com/item/1005005195434497.html
I've got the 12V version as the macro ring light is a car headlight module. Your RPi probably wants 5V, but do check :)
They're very stable and quite powerful and no output power fluctuation when the input power goes away.
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@yngmar The Pi in question is running off of 12 V, via a USB power supply. I'm guessing by the description these are just designed to work at the same voltage on the input and output? Still would be handy, but I'd probably give the 12 V a go.
Does it seem to handle the battery well? As in, charging and managing lithium okay?
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@toroidalcore They use USB-C input, not 12V DC. Output is boosted to whatever voltage you select. That's what you're choosing when you order, not input voltage.
I thought RPi used 5V, or is this wrong?
https://github.com/raspberrypi/documentation/blob/develop/documentation/asciidoc/computers/raspberry-pi/power-supplies.adoc
Didn't have any problems with battery management, as well as any 18650 in a household device.
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