this post was submitted on 15 Aug 2023
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I'm tired of buying a new 12 V battery every 1-2 years. I have about 4 small (rated ~ 300 W [not VA]) UPSes with 7 Ah, 12 V, maintenance free batteries.

I'm thinking about replacing them with one, powerful unit. But the more powerful the unit, the more it costs - non-linear.

Do you have experience with some DIY solutions? Like 12V DC to 230V AC inverter, battery charger, some UPS controller (simple relay?)?

Or maybe you have some other idea that is cheap(ish)?

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[–] carl_dungeon@lemmy.world 17 points 1 year ago (12 children)

I have a few cyber power 1000W/1500 VA units. They go on sale for under $150 now and then. Best price/power ratio I’ve found. The battery in one has lasted at least 6 years, other is going strong for at least 2. They’re big enough to power my 8 bay NAS for a couple hours. I don’t recommend DYI for a UPS, too unreliable.

[–] whynotzoidberg@lemmy.world 2 points 1 year ago (3 children)

Where did you purchase? Camelcamelcamel shows those sub-$150 price drops on that capacity might be a couple years old, too. :-)

[–] 353247532631@lemmy.world 2 points 1 year ago

I’ve picked up 1350s from Woot and Costco online.

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