Forum Discussion

Jimfromvirginia's avatar
Jimfromvirginia
Explorer
May 20, 2019

Converter Replacement

My Montana Fifth Wheel, 3455SA, appears to have lost the converter. Model number is Xantrex xadc8120. Appears this is discontinued as prices are $599 for similar from them. Seems ridiculous. Looking at a product from Progressive Dynamics, but cannot determine which one. They range from 30 amps up to 80 amps. So question is, how do you know what to put in? Thanks, trying to get ready for Holiday weekend but really struggling. Found it under the steps to bedroom, but getting to backside is going to be a pain!!!!
  • RoyB's avatar
    RoyB
    Explorer II
    May 20, 2019
    Randy at BEST CONVERTERS has the PD9200 version converter chargers that has the 14.8VDC BOOST mode modification done to them if you ever think you want to put the 6V golf cart batteries in your trailer.. The golf Cart batteries likes to see the 14.8 BOOST voltage over the old standard 14.4VDC... Cost is around $200 for the PD9260C 60AMP model... That is model I use here for charging my batteries...

    Roy Ken
  • Allworth's avatar
    Allworth
    Explorer II
    May 20, 2019
    The Progressive Dynamics 80 will handle whatever you put n it and has the charge wizard battery protection.

    $300 at CW and probably less at E-Trailer and/or Amazon.
  • StirCrazy's avatar
    StirCrazy
    Moderator
    May 20, 2019
    Jimfromvirginia wrote:
    Looking at a product from Progressive Dynamics, but cannot determine which one. They range from 30 amps up to 80 amps. So question is, how do you know what to put in?


    if you have to change converter it is a good time to look at batteries if you haven't upgraded from the single one that came with the rv. size your converter to the battery bank that you want to put in.

    Steve
  • midnightsadie's avatar
    midnightsadie
    Explorer II
    May 20, 2019
    real great advice might be a simple thing as fuse corrosion .take them out of the holder and clean up a bit.
  • cavie's avatar
    cavie
    Explorer
    May 20, 2019
    the wattage or amperage ratting will be on the old converter. Or look it up on line. Replace it with the same or higher wattage? Kinda simple. Don't buy anything until you know for sure your converter is bad. It's called bench testing. May be as simple as blown Reverse Polarity fuses as stated above.
  • dmck413's avatar
    dmck413
    Explorer
    May 20, 2019
    Make sure it is not just a blown fuse. Mine had 2 blown fuses once. My Heartland has a 70 amp converter if that helps.I also carry a battery charger after that time my fuses blew.

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