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Thread: Battery

  1. #1
    Site Sponsor John612's Avatar
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    Battery

    Should we disconnect the battery while connected to shore power?
    I've heard it's hard on the battery to keep it connected all the time.

    Thx
    John
    John, Susan & Luke
    2015 Reflection 303 RLS #867
    Bakersfield, CA

  2. #2
    droidguru
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    This is what I normally do:

    Turn the disconnect to off when you will be away from your camper significant period of time as in a two weeks or more, otherwise leave it on.

    I can't back it up with an electronics lesson only to say I have had tremendous luck with batteries lasting more then the 5 year stated life span. That being said I check the fluid levels monthly (which I know is overkill) and always top them off when it is needed!

    Good Luck and Happy Camping!

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    Site Sponsor Cate&Rob's Avatar
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    Hi John,

    I would suggest that you leave the battery connected. If you disconnect it, everything that runs on 12V will be powered directly by the converter (battery charger). The converter is not designed to be a stand alone 12V power source, it is designed to be a battery charger. All the 12V things like lights, water pump and the controllers for the fridge, water heater and furnace should have a strong steady 12V supply from the deep cycle battery. The converter will put back whatever power is taken from the battery, at the proper rate.

    Rob
    Cate & Rob
    2015 Reflection 303RLS

  4. #4
    scott42blue
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    All RVs in the below 500K bracket come with a low end 3 stage charger. No temperature sensing, higher float voltage and most max out around 65 amps. Key to battery life is keeping fluid topped off. Always use distilled water ( very cheap ) . A RV or boat can use 1/4 inch or more of fluid sitting on charger for 2 months. Enough to hurt battery performance a lot.
    I would test battery disconnect. As mine in new 355 does not work. Easy to test. Turn disconnect off and see what works.
    The only thing working should be CO detector and level jacks.
    Scott

  5. #5
    scott42blue
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    I will post what I find out after battery disconnect after I finish Splendide washer/dryer 210 XC install. Mine is set up for negative cut off, that reduces amp load on switch.

  6. #6
    Site Sponsor Cate&Rob's Avatar
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    Hi Scott42blue,

    You are right on with your advice on the importance of battery watering. This is really important if you actually deep cycle "deep cycle" batteries. I am interested in your comment about switching the negative side for reduced current load on the switch. Can you explain this further ? I have always been of the understanding that current in and out of the battery has to be equal.

    Rob
    Cate & Rob
    2015 Reflection 303RLS

  7. #7
    Long Hauler Canyonlight's Avatar
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    John--the guys have covered this well but one other thing is that w/o the battery power and if you would lose shore power the fridge fan cannot run and thus the fridge not function as it could for several hours with just battery power. Warm milk with your cookies is not good !

    Dan
    Dan & Carol
    2014 303RLS Reflection #185 (10/2013 build)
    2012 Silverado LTZ Crew Duramax 2500HD
    2700/16K Pullrite Superglide

  8. #8
    King Pin
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    Interesting anecdote. My son called yesterday and told me he was replacing his trailer battery after eight years! He has a typical three stage converter that he leaves plugged in all year. He doesn't have a disconnect switch. He tops off the water every month.

  9. #9
    Site Sponsor John612's Avatar
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    Thanks a bunch for all your comments, sounds like I was given bum gouge and will make necessary course correction.
    I will check battery water in the morning too.
    Currently at Pollock Pines four nights between Sacramento and Lake Tahoe, plumb gorgeous and very quiet.
    John
    John, Susan & Luke
    2015 Reflection 303 RLS #867
    Bakersfield, CA

  10. #10
    droidguru
    Guest
    I agree with the tips here as well. In my post above, I was referring to when I am not using my camper (it is sitting in storage with everything off). My camper is generally always connected to shore power even when in storage. If I'm using it I always have the battery connected. Should have clarified by asking a question before I answered.

    Thanks to everyone else who picked up my slack!

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