Battery charging

I’m a new owner of a 2015 320 and don’t know how to charge the battery. Can someone give me a little help. I’d be very grateful. Thank you 🙏 

Comments

  • Michigan_MikeMichigan_Mike Administrator Posts: 2,752
    Hook your trailer up to shore power and your trailers electric converter will charge your battery up.  If you don’t have a battery shutoff switch the battery will run down in 3-4 days via parasitic drain via LED light circuits, TV/DVD player, etc.  Use the forum search function above and you will find a wealth of additional information.  
    Mike 
    Howell, Mi
    2019 [email protected] 400
    2021 Chevy Silverado LTZ
  • NessmukNessmuk Member Posts: 9
    Is it normal if you switch the disconnect switch to off, for the output of the solar panel to drop to 0 (assuming a fully charged battery). When the switch is turned to the on position the victron app shows output from the panel again.
    I just got my Tab and this solar thing is new to me, and a bit confusing.

  • NessmukNessmuk Member Posts: 9
    Here are two screenshots (No shore power). Battery is fully charged. 5W reading is with battery power to trailer. 0W is with disconnect switch turned to off.
    I am just wondering if it is simply parasitic draw that is why this happens. 

  • dragonsdoflydragonsdofly Member Posts: 1,554
    @david_joyce, as @Michigan_Mike said, hook your trailer up to shore power, and the converter (brown box under driver's side bench seat) will charge the battery. If you are really new to this, you may not know how. I  will assume the trailer is on your property. Hook up your 30 amp trailer electrical cord to the trailer. You need a 30 amp to 20 amp (or 30 to 15 amp [less common] adaptor, which hooks to your 30 amp trailer cord and that adaptor then connects to household current.

     Some people need to connect their adaptor to an appliance grade, high amperage extension cord then into household power. You will also need some kind of EMS (electrical management system) to protect your trailer from power surges, reversed polarity and low voltage situations.

    I second Mike's suggestion to get a battery cut-off switch installed, sooner rather than later. That will keep the parasitic draw from discharging your battery every few days.

    As an aside, some of us choose to keep our trailers plugged in all the time, and some choose just occasionally when not in use to do a quick systems check, charge or prep for a trip. Whatever suits your personal camping style is what's best for you. Good luck.
    -Denise
    2017 [email protected] sofitel([email protected])TV 2015 Silverado 2500hd(Behemoth). Wyandotte, Michigan.
    Draco dormiens numquam titilandus.
  • MarcelineMarceline Member Posts: 1,074

    I second Mike's suggestion to get a battery cut-off switch installed, sooner rather than later. That will keep the parasitic draw from discharging your battery every few days.

    Until you get a switch, an alternative is to pull the 30amp fuse that is on the positive wire coming from your battery. 
    San Francisco Bay Area
    2013 CS-S [email protected]
    Battered but trusty 3.5l V6 Hyundai Santa Fe
  • Sharon_is_SAMSharon_is_SAM Moderator Posts: 7,548
    @Nessmuk - my understanding is that the factory installed solar is attached directly to the battery, so the battery switch that isolates the battery from the trailer circuits should not have an impact on the charging.  But, with a current of 0.3 A, as you noted,  your battery is full and in float.  When you turn off the battery via the switch, you stop the phantom drain, so your current goes to 0.
    Sharon / 2017 [email protected] CSS / 2015 Toyota Sienna Minivan / Westlake, Ohio
  • MuttonChopsMuttonChops Member Posts: 986
    david_joyce said:
    . . . new owner of a 2015 320 and don’t know how to charge the battery. Can someone give me a little help.
    While all the responses are correct for the topics they cover, I wonder if perhaps it will cause an information overload for a [email protected] newbie.

    The most simple answer to your question is:
       1.   Connect shore power to your trailer.
       2.   Confirm your [email protected] Power Center 120VAC Breakers are On.
       3.   Confirm your battery cut-off switch (if installed) is in the On position.

    The Power Center unit includes a battery charger that will automatically change and monitor your battery while the [email protected] is connected to Shore Power and the battery cut-off switch (if installed) is in the On position.

    Adding a cut-off switch if not installed, using various solar methods to charge, and accurate monitoring of the battery state . . . . are all for when you get past the confusion :) of Newbie Life . . . IMHO

    '18 320 Spitched axle, 3020HE; PNW based
    TV: '17 Colorado V6 Z71 4x4, Tow Package, GM Brake Controller
    Adventures:  36   Nights:  204 
  • david_joycedavid_joyce Member Posts: 2
    Which wires are positive? The yellow/red?

  • Sharon_is_SAMSharon_is_SAM Moderator Posts: 7,548
    @david_joyce - your battery terminals should be marked with a “+” and a “-“.  Are you trying to use a separate charger? 

     If your battery is installed correctly, simply plugging in your TaB and confirming the breakers are not tripped should allow for charging.  
    Sharon / 2017 [email protected] CSS / 2015 Toyota Sienna Minivan / Westlake, Ohio
  • jimrjjimrj Member Posts: 45
    +1 on what Sharon said. Also, most battery installations use a red cable for the positive side. 
    Jim and Robin / 2021 320S / 2015 Jeep Cherokee Trailhawk / Oregon
  • VernaVerna Administrator Posts: 6,815
    @jimrj, actually, in nüCamp’s case they normally use a green wire to the positive side. To stay safe, the fused wire going to the positive terminal would be the safest way of tracing which wire is which. 

    The use of the red and yellow wires in the above photo tells me the wiring has been changed since leaving the factory. In this case, the fused wire going to the positive terminal is the positive or hot wire. 

    Your best friend also in this case would be a multimeter to verify which is which. 
    Verna, Columbus, IN
    2021 [email protected] 320S  Boondock “The [email protected]
    Towed by a white 2019 Ford F-150 4x4 Supercab, 3.5L V6 Ecoboost “The Truck”
    [email protected] Administrator
  • ScottGScottG Moderator Posts: 4,641
    edited July 20
    @david_joyce, the original wiring on my 2015 looks like yours. Red wire --> yellow wire w/fuse --> battery positive. 

    I don't know why they use funky colors for the fuse holders instead of just sticking with red, but I've seen this other places as well.

    A white wire with NO fuse is attached to the negative battery post.

    Regardless, don't make judgements based on wire color. There are standards--sort of--but may not always be followed. As others advised above, always confirm all attachments electrically and/or visually. 
  • JP2558JP2558 Member Posts: 168
    I took a picture on my phone, of my battery wiring for future reference. Highly recommended, but be sure to include the actual polarity stamped into the battery itself near each post. Basically fool proof.

    Thanks, Jerry 
     
    2019 Honda Pilot AWD and 2018 [email protected] 320-CS hanging out on the left edge of Lake Erie.
  • Sunny2WSSunny2WS Member Posts: 16
    I also had a similar question regarding the battery and charging via the solar panels. I used to own an older [email protected] (without solar), now have a new one with battery shut off valve and solar. My question - does the battery charge from the solar panels if the battery shut off switch is “off”?  The owner’s manual only states that the battery will not charge from shore power if switch is off. Wondering because my [email protected] is stored in an open ended garage that catches a little sun conveniently on the panels, so in theory I would like to shut off any parasitic draw and charge up the panels via solar while it is in storage. I can check the monitoring system later but thought people may know in the group. 
    2006 Dutchmen [email protected] clamshell "Pika"
    2011 Honda Pilot
  • pthomas745pthomas745 Member Posts: 2,081
    The controller "should" be wired directly to the battery, so the battery switch "should" have no effect on solar charging. The easiest way to check would be just look at the solar controller with the battery switch off.  If it is powered on, it is drawing directly from the battery.

    2017 Outback
    Towed by 2014 Touareg TDi
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