Forum Discussion

beetleman's avatar
beetleman
Explorer
Jul 12, 2017

House Batteries

I am trying to figure out why my house batteries are not charging when it is plugged into shore power. The batteries will charge when the engine is running. The microwave and other 120V items will run when plugged in. I have checked all the GFi outlets. Checked battery connections. I have not found anything blown fuses with the converter. The only local rv tech is booked for several weeks. Anyone have and idea what I can check?
Seeking Advice
  • Veebyes's avatar
    Veebyes
    Explorer II
    Jul 14, 2017
    Converters are not expensive. Simple to install also. Surely if the converter is at fault this is a very easy DIY job. Trouble shooting looking for loose connections or blown fuses is not hard either.
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    Jul 13, 2017
    House batteries not charging on shore power.. See line diagram

    Shore---Breaker box---Converter--Fuse----Batteries, fuse box, other 12 volt stuff

    Suspects:
    Trippped breaker
    Loose wire breaker box (I often say many RVers have a few screws loose.. THESE are the screws I am speaking of).

    Bad converter

    Blown reverse polarity fuse.. THIS fuse may be one (or both) of the two right hand fuses on your fuse panel, or it may be in the converter. and there can be up to 3 of them in aparallel. Usually 30 amp ATC fuses.
  • Bobbo's avatar
    Bobbo
    Explorer II
    Jul 13, 2017
    Do you have a battery disconnect switch? If the battery is disconnected, it won't charge.
  • beetleman's avatar
    beetleman
    Explorer
    Jul 13, 2017
    I will do both suggestions in the morning. Currently we are have a thunder and lightning storm.
  • sch911's avatar
    sch911
    Explorer
    Jul 12, 2017
    Make sure the converter is getting it's 120V AC input. Generally it's on one of the AC breakers.

    Test the battery voltage at the posts with a voltmeter with and without the converter running and report back the results.
  • darsben1's avatar
    darsben1
    Explorer
    Jul 12, 2017
    Could I trouble you for some info on your rig.
    But it sounds like the battery charge function of your converter is shot. Can you get to the converter and check the charging circuit output when plugged in. Please post model of your converter

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