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)?

  • dsmkEnglish
    14·
    1 year ago

    deleted by creator

      • dsmkEnglish
        5·
        1 year ago

        deleted by creator

        • giant_smeeg@feddit.ukEnglish
          1·
          1 year ago

          Yeah that’s good then.

          I get about 60m runtime on my setup and it only cycles 10-20% max.

          Already had to change the battery early and wondered if that was why.