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Where are all the cheap lithium UPS products? (alien.top)

submitted 11 months ago by djent_in_my_tent@alien.top to c/homenetworking@selfhosted.forum

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And yet affordable LiFePO4 power stations are everywhere. Am I missing something?

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[–] michrech@alien.top 1 points 11 months ago

I'm just re-using my APC Smart-UPS 750 and a pair of batteries like these. Allegedly the BMS / charging circuits in them are designed to work with charging systems that generally charge up 12v lead acid batteries. The pair of batteries I ordered have the exact same dimensions as the lead acid batteries they're going to replace, and the same connectors in exactly the same location.

I've watched a number of videos on YouTube with folks that have done such conversions (using a wide array of UPS models). Even watched a video where a guy did a short circuit test (the battery he used failed miserably, but didn't catch fire). The cable on my UPS has a built in (and replaceable) fuse, so I'm not worried about an issue with the UPS pulling far more amperage than it should be. Of course, that fuse won't do much good if something inside the battery itself fails, but I suppose that's what home owners insurance is for. :)