Wiring batteries. How does this look?

[Redbud]

Hello all! I have 8 of these batteries:

E04F380D-FE10-4E4C-85D9-894BB720F8FB.jpeg
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i have them wired with 2 is series for my 24v system and 4 sets is parrallel.

I wired them as follows:
198C3D04-73AF-4CA1-AC21-F71EB43A5B1E.jpeg

That is a over simplified version of my setup just to visualize the battery connections. I have two strings of solar panels each to their own Mr. Power MPPT controllers charging these batteries and the load is a 5000w Power Jack pure sine wave inverter powering my Aquaponics setup.

This has been running for a couple months now with little problems. Just when we get too much cloud cover for too long I loose battery and the inverter goes to fault.

Is how I have this connected ok or causing any issues? Any thoughts on the wiring or type of batteries would be greatly appreciated.

[NCmountainsOffgrid]

I'm guessing you just didn't draw each two sets in series(pos to neg)?

[Redbud]

you mean the batteries? No. Each 24v picture is two 12v batteries in series.

[littleharbor]

Three points.

1, You should have the load and charging cables on the same pos. and neg. battery terminals for this type of wiring scheme.

2, You would be better off setting up buss bars and using equal length cables from the battery terminals to the buss bars. You can help insure equal charging to each battery by using a DC rated clamp meter.

3, In the future, when it becomes time to replace batteries you should replace this 4 strings in parallel battery bank with larger AH batteries which will give you a single string of batteries and you wont have to use all this extra hardware and will have even charging of all your batteries. So much simpler.

http://www.fullriverbattery.com/product/batteries/DC1150-2

[Redbud]

I was cramped for space and had to be a little ingenuitive to get this all working. I am using equal lengths of 1/0 welding wire and running one continuous length on the positive and then negative sides. Check out the picture for how it is done. It make a U shape because I could not run it all strait. Nothing gets remotely hot at full charge and full load.

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