wiring solar 12v 250ah batteries

robocoprobocop Registered Users Posts: 77 ✭✭
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 .




  • BB.BB. Super Moderators, Administrators Posts: 32,804 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:


    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
Sign In or Register to comment.