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12v Batteries into 24v (6pcs)

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  • 12v Batteries into 24v (6pcs)

    Hello,

    I have 6 batteries of 12v-200Ah with 24v Inverter Please help me to make 12v 6 batteries into 24v.

    Thank You

  • #2
    To use 6 12V batteries in a 24V system, you need to wire them in 3 parallel strings of 2 in series. That means wire 3 sets of batteries with the plus from battery 1 to the minus of battery 2, plus from battery 3 to minus of battery 4, and plus from battery 5 to minus of battery 6. Then wire the minus from batteries 1, 3, and 5 together, and the plus from batteries 2, 4, and 6 together. To connect to the inverter, wire the minus from battery 1 to the inverter, and use a fuse or breaker from the plus of battery 6 to the inverter.
    Solar Queen
    altE Store

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    • #3
      Thank you so much for solving this problem.

      Please check this attachment you are saying exactly as this one right?

      http://www.boatdesign.net/forums/att...6-12v-agm-.jpg

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      • #4
        Yes. Make sure to use a fuse or breaker on the plus. Inverter wattage / lowest voltage it works at (i.e. 20V) x 1.25.
        Solar Queen
        altE Store

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        • #5
          Originally posted by Amy@altE View Post
          Yes. Make sure to use a fuse or breaker on the plus. Inverter wattage / lowest voltage it works at (i.e. 20V) x 1.25.
          What's the advantage of using breaker or what if I don't use it?

          I used 4pcs of batteries in the past with 24v without breaker or fuse and it worked fine for almost 1 year

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          • #6
            Originally posted by djhassoonew View Post
            What's the advantage of using breaker or what if I don't use it?

            I used 4pcs of batteries in the past with 24v without breaker or fuse and it worked fine for almost 1 year
            Some people paying insurance for the whole life and nothing ever happen to him or his family, but it is there to protect the unlikely happen events.

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            • #7
              It is a matter of safety. Over current protection helps prevent a fire. You have a lot of current on that wire. I don't know what size inverter you have, but let's use an example of a 2000W inverter. It can have as much as 95A of current going through that wire. Will it work without a fuse? Sure. Will it protect you if something fails? No. Can you run your house without breakers? Sure, technically it will work. Should/would you? Hell no.

              A breaker allows you to manually shut off the connection as well, a fuse only provides over current protection, which is better than nothing.
              Solar Queen
              altE Store

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              • #8
                Originally posted by Amy@altE View Post
                It is a matter of safety. Over current protection helps prevent a fire. You have a lot of current on that wire. I don't know what size inverter you have, but let's use an example of a 2000W inverter. It can have as much as 95A of current going through that wire. Will it work without a fuse? Sure. Will it protect you if something fails? No. Can you run your house without breakers? Sure, technically it will work. Should/would you? Hell no.

                A breaker allows you to manually shut off the connection as well, a fuse only provides over current protection, which is better than nothing.
                I got you.

                Thank you so much for explaining in detail.

                I will definitely use fuse.

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