12v Batteries into 24v (6pcs)

[djhassoonew]

Hello,

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

Thank You

[Amy@altE]

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.

[djhassoonew]

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/attachments/onboard-electronics-controls/82252d1372531058-chinese-teak-24v-battery-bank-6-12v-agm-.jpg

[Amy@altE]

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.

[djhassoonew]

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

[paulcheung]

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.

[Amy@altE]

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.

[djhassoonew]

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.