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  1. #1
    Left The Driveway
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    Should I ordered 2nd alternator on new truck for charging Li batteries?

    I am ordering a new GMC 3500 standard (short) box to pull 303 RLS. Should I order a 2nd alternator for charging through a DC to DC charger to charge a Li bank?

  2. #2
    Site Sponsor Cahriad's Avatar
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    Apr 2019
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    Reno, NV
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    I have twin alternators and it is nice to be able to connect chargers and invertors without worrying about capacity. Go for it.
    Reflection 297RSTS 2018
    Ram 2500 Laramie 6.4 Hemi

  3. #3
    Site Sponsor SolarPoweredRV's Avatar
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    Mar 2019
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    Tampa Florida
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    I would definitely order the dual Alternators if I were planning on installing a DC to DC charger for a large Lithium battery bank.

    PS: I strongly recommend getting a tailgate step, without mine I wouldn't be getting into the truck bed.

    PPS: The other option I ordered, but didn't plan to was the Engine Block heater, not too expensive, but nice to have if you need it.
    Last edited by SolarPoweredRV; 11-11-2021 at 12:07 AM.
    David and Peggy
    2019 Ford F350 Lariat, 6.7L Diesel, Dually, Long Bed
    Running with 20k Reese Goosebox (Love It) and Ford Factory "Puck" system.
    Stopping with 8,000 lb Disc Brakes and Titan Hydraulic over Electric Brakes system.
    Powering all this fun with 1200 Watts of Solar, two Tesla, Model S, battery modules, 24 volt Victron Inverter.
    2018 Solitude 310 GK

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