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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[–] [email protected] 0 points 1 year ago (2 children)

I've had my APC 1000-UPS for 5 year and have only had to replace the battery once, though I think I may need to again by the end of the year.

[–] [email protected] -1 points 1 year ago

Do you remember what brand of battery it was?

I think the original lasted longer than the replacement.

[–] [email protected] -1 points 1 year ago

So, every ~2.5 years... Not that far off...