wiring solar 12v 250ah batteries

robocop
robocop Registered Users Posts: 120 ✭✭
in Solar Beginners Corner #1
Hi everybody
I have 12 pcs of 12v batteries to form 48v for the inverter (48V)
Would like to form 3 group of 4 batt .
Would like to have the most of them in terms of AH.
How to wire and the best way to wire them .

Regards 
Bob

 
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  • BB.
    BB. Super Moderators, Administrators Posts: 33,714 admin
    edited October 2020 #2
    There is only one way to wire the bank... 4 series * 3 parallel strings = 12 batteries. That will be 48 volts @ 3x AH rating (of one battery).

    Good place to understand the optimum parallel wiring of batteries is here:

    http://www.smartgauge.co.uk/batt_con.html

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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