Finally got around to replacing my small but expensive APC lead-acid based UPSs with one larger LiFePO4 self-built system. Has about 10 hours of capacity and the advantage of being able to take advantage of cheap electricity.
Cells and case from #fogstar, BMS from #JBD, Inverter/charger and battery monitor from #Victron and powered by a #raspberrypi running #venusOS.