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No, don't do it. I understand his thought process because they are both 12v batteries with more capacity, but car batteries are made for high burst of energy wh
by sirmoveon 1y ago
No, don't do it. I understand his thought process because they are both 12v batteries with more capacity, but car batteries are made for high burst of energy which a car engine ignition requires, whereas UPS batteries are made for slow drains. Also, these UPS are made for charging battery cells in a certain way, if you start to stack a bank of batteries of the same model in parallel hoping for more capacity, even then its a problem for the UPS's charger, they won't charge evenly and eventually becoming a problem.
- zdragnar 1y agoMarine deep cycle batteries might work better, but at some point I'm pretty sure lithium would be price competitive.
- bluGill 1y agoIt isn't quite that bad. the batteries are close enough that it will work. the real worry is these are already a fire hazzard and so something goes wrong insurance will blame the mod even if not at fault
- chatmasta 1y agoI like to keep my hardware competence sufficiently low so that I’m never cursed with the false confidence to even consider “drilling a hole in a UPS,” nevermind wiring it to a car battery in my closet…
- nancyminusone 1y agoYou seem like the kind of guy who doesn't enjoy a nice sulfuric acid spill on the floor, haha
- chatmasta 1y agoI will mess with all kinds of hardware, especially mini PCs and routers.. I once had a few hundred iPhones in my closet… but I draw the line at anything that uses batteries or electricity in a non-standard way. If the wire can’t carry data, I’m not touching it. Maybe it’s because when I was a kid, I fancied myself an experimenter, and I had a wire ripped off a lamp, and touched the two ends together…