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3kVA 240V inverter and three gel batteries 100Ah 12V. And I am only running my borehole system 1st pump .38kW, 2nd pump .75kW.

The inverter lasts for five mins then goes off because of low battery.

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    What cabling do you have? How is things connected? Three 12V batteries doesn't make 24V.
    – vidarlo
    Nov 18 at 10:47
  • Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking.
    – Community Bot
    Nov 18 at 11:48
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    Also post the age of the batteries, and if older, approximately how many times they were recharged and what device they powered before. And post the voltage of the pumps. Model number of the inverter would be helpful too, Nov 18 at 12:23
  • See this answer for some ideas that may be pertinent: diy.stackexchange.com/a/258704/140350 Nov 19 at 2:03
  • Also this question & answer diy.stackexchange.com/questions/200987/… Nov 19 at 2:09

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