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Building a UPS with LiFePO4 Cells
- PaulHoule 6y agoWow! I got depressed when I was speccing out a UPS a few years ago because they all suck (use Lead Acid batteries) but there are many practical reasons that they don't use better tech.
- Nextgrid 6y agoThat wooden box looks like a major fire hazard if a component fails which will then set fire to the box and thus the batteries contained within.
- ragtagtag 6y agoYou raise a good point! I spent some time thinking about this. Ultimately, it wasn't clear to me that any plastic I could reasonably work with would be more fire-retarding than the dense wood that I ended up using, and of course a metal enclosure would be a far greater fire hazard due to the increased risk of short circuits.
- Nextgrid 6y agoI would disagree regarding the metal box. Sure, it can cause short circuits, but that’s relatively easy to guard against with proper insulation. Even if shorts do occur, it will blow a fuse or trip the overcurrent protection. Even if it doesn’t, it won’t provide a supply of combustible material to sustain a fire for long enough to ignite the nearby batteries.