Looking for advice on Series / Parallel connection for 4x 6v batteries

hawkeye99
hawkeye99 Registered Users Posts: 2 ✭
in Solar Beginners Corner #1
Hi Guys,
I'm coming in late to a solar system project that was installed a couple years back at the cottage.  I have attached 2 diagrams , one titled "Wolf Lake" is our current setup using 4 Rolls Surrette 6 volt  400AH batteries.

The other is how the manufacturer recommends hooking them up.....I'm looking for feedback on if our current setup is so wrong that its only using 2 of the 4 batteries ?  

  Thanks very much
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  • Aguarancher
    Aguarancher Solar Expert Posts: 315 ✭✭✭
    #2
    use this site to figure out the best set-up http://www.smartgauge.co.uk/batt_con.html

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  • ramloui
    ramloui Solar Expert Posts: 109 ✭✭
    edited December 2015 #3

    Something doesn't look right on the first drawing: both outer batteries are not contributing anything because one of their pole is not connected anywhere. The 2 wires connected to the same side of those batteries are electrically connected to each other. The output of that bank is 12V at 400 Ah.

    The second picture is the way to go.

    Cheers!

    Louis R.

    Off-grid cabin in northern Quebec: 6 x 250 W Conergy panels, FM80, 4 x 6V CR430 in series (24V nominal), Magnum MS4024-PAE
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