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  • Voltage drop

    Hi everyone , thanks for welcoming me to the forum .

    Could someone one please help , have installed a 160 w panel through to a tracer 1220an MPPT with a 100 amp hour Agm battery .
    Running only a led light strip
    system works ok for a while panel sending on on average 20v , not under load battery showing 14v .
    When lights on battery shows 9v and load 9v and after use of light battery drops to 2v then the MPPT locks out .....
    battery shows over discharge is this a faulty battery or should I fully charge battery first then try again .

    Help greatly appreciated.
    Last edited by Lord. Raglan; 08-01-2018, 08:15 AM.

  • #2
    I always commission a brand new battery with a stiff charge source before putting it into a cyclical charge situation. Unfortunately you may have already damaged your battery.

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    • #3
      Thanks Logan battery was new straight out of box ...have been in contact with supplier to see what they say,I shouldn
      Last edited by Lord. Raglan; 08-01-2018, 01:10 PM. Reason: terrible spelling

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      • #4
        Thanks all .
        problem solved used amp meter to test a few things ...checked connections through the complete set up and found a bad connection on a switch to the battery .

        Sorted .

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        • #5
          Can 2 60v solar panels 240w each charge 2 12v batteries in series? Mppt 30a controller. Is there ways i should do this to make it most efficient and safe for system?

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          • #6
            Originally posted by Jram36 View Post
            Can 2 60v solar panels 240w each charge 2 12v batteries in series? Mppt 30a controller. Is there ways i should do this to make it most efficient and safe for system?
            As I stated in the other post yes although that CC will limit your charging amps to 30A from the 480 watts of panel which can generate almost 40A (480W / 12V = 40A).

            Also your 12V battery system shouldn't be more than 360Ah or less than 240Ah

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