this post was submitted on 16 Jul 2024
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I'm looking to buy ups as I have few power outage (last between 1 to 5 seconds max) where I live but I have never used one so don't know what specs should I check for

Ideally I will plug my 3d printer (about 100-160w when printing), a pi 4 with nvme drive (no idea of wattage) and a mini pc with n100 processor (around 10-20W)

Thanks for your advices

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[–] [email protected] 2 points 4 months ago (2 children)

How safe is it to keep a lead acid battery UPS in a relatively/loosely closed space about the size of 8 of those UPSs?

[–] [email protected] 4 points 4 months ago (1 children)

A typical UPS uses sealed lead acid batteries. Those don't vent hydrogen unless something goes really wrong like severe overcharge or a short circuit.

Just make sure it has enough ventilation to keep it from overheating. They are usually around 80% efficient, so it will produce around 40 watts of heat with your load while it's on battery.

[–] [email protected] 1 points 4 months ago* (last edited 4 months ago)

Ah, you’re right, it’s a gel battery. Good point on overheating. Thanks!

[–] [email protected] 2 points 4 months ago

just have some ventilation so any hydrogen can escape (remember its lighter then air, so it will go up and out)