forum threadphoinix | Staff posted Jun 12, 2026 10:28 PM
Item 1 of 4
Item 1 of 4
forum threadphoinix | Staff posted Jun 12, 2026 10:28 PM
$1260.47 | APC Smart-UPS 1500VA Lithium Ion UPS, SMTL1500RM3UCNC at Amazon
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I've been doing some research and am close to building my own UPS with a Victron MultiPlus + some Ecoworthy batteries. It'll be much better than anything off the shelf for ~$450 (run my equipment for about 24 hours vs 3 hours if I'm lucky) and likely be more reliable. I'm glad economies of scale are kicking in for lithium batteries.
I've been doing some research and am close to building my own UPS with a Victron MultiPlus + some Ecoworthy batteries. It'll be much better than anything off the shelf for ~$450 (run my equipment for about 24 hours vs 3 hours if I'm lucky) and likely be more reliable. I'm glad economies of scale are kicking in for lithium batteries.
The multiplus has an inverter, charger, and AC transfer switch, so it should be an all in one solution for this. The software even has a UPS mode (enabled by default.) I don't have solar, just regular service from my power company.
For batteries, just going to use whatever 100+AH one goes on sale and start with that. It needs to be 12V because the multiplus 120V AC units use 12V DC systems. They have a few that are 48V DC (which I prefer for smaller wires) but those input/output 240V AC.
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