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How to Run a 24V battery bank in an RV?

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  • #16
    Originally posted by mba83 View Post
    Seems like it's got the auto-restart spec you would want. Did you read the fine print:
    [I]Note: It is recommended to use stable DC power for the input power supply If you use the pulsed DC power provided by the generator, please filter it with capacitor before connecting it to the converter.[/I]

    Generally, connecting to the battery terminals will be a pretty good "capacitor" and it will likely be OK. Use a fuse on both it's + input and + output wires, and size the wires to match the fuses you use. I'd suggest 30A for the input and 50A for the output.
    30A needs 8ga
    50A needs 6ag

    wire gauge chart https://www.westmarine.com/WestAdvis...e-And-Ampacity Be sure your wire is rated for vibration, that's why I linked to a boating site, not a house site
    Last edited by Mike90250; 02-20-2019, 02:33 AM.
    Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister

    Comment


    • #17
      Thank you for the tips! My input will be 24V battery (19-25V) so input will be stable. I will plan to use smaller fuses, probably 20A for both input and output. I don't expect this to pull above 10A as the destination battery will be topped off most of the time. Also considering using a diode, just in case, but not sure if it's needed for this regulator.

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      • #18
        I have found a number of bits and pieces of 24v options.

        I have pairs of 12v LED lights in series, 24v water pump, 24v USB chargers etc.

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        • #19
          Originally posted by mba83 View Post
          Thank you for the tips! My input will be 24V battery (19-25V) so input will be stable.
          A 24V battery can be up to 30V while charging. If you go down to 19V you will destroy the battery in 1 or 2 cycles of that

          Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
          || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
          || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

          solar: http://tinyurl.com/LMR-Solar
          gen: http://tinyurl.com/LMR-Lister

          Comment


          • #20
            Originally posted by Mike90250 View Post
            A 24V battery can be up to 30V while charging. If you go down to 19V you will destroy the battery in 1 or 2 cycles of that
            I'll be using a lithium battery with custom cutoffs.

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