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 4 points 1 year ago (2 children)

I have 3 - but I get that runtime out of one of them. Depends on load, but idle the nas doesn’t draw too much.

[–] housepanther@lemmy.goblackcat.com 1 points 1 year ago (1 children)

What is your NAS? Is it something you built or a Synology?

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

Ah, I thought as much because they're really power-efficient unlike something DIY.

[–] Telodzrum@lemmy.world 1 points 1 year ago (1 children)

What’s the chip in that NAS?

[–] carl_dungeon@lemmy.world 1 points 1 year ago (1 children)
[–] Telodzrum@lemmy.world 2 points 1 year ago

That makes a lot of sense. Great low power chip.