12V up-convert to 48V

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • MD2020
    Junior Member
    • Dec 2018
    • 19

    12V up-convert to 48V

    Originally posted by Sunking
    an Electronic Battery Isolator for your house batteries which allows your engine alternator to charge the house batteries when the engine is running. Your RV alternator can generate more usable energy in a hours than the panels can generate in a day.
    Can the Electronic Battery Isolator charge a 48V LiFePo4 battery bank from a 12V vehicle engine alternator?

    Thx,
    MD2020
  • MD2020
    Junior Member
    • Dec 2018
    • 19

    #2
    Originally posted by Sunking

    Please reconsider and use a 12 volt Inverter no greater than 1000 watts. Not only will it save you quite a bit of money, it will meet your needs and allow you to sleep at night knowing it is exponentially safer. Having said that if panel wattage exceeds 1000 watts, then you can use a 24 volt 1000 watt Inverter . Use the saving to buy a 24 to 12 volt converter. 1200 watts at 24 volts only requires a 50 amp Controler. You do not need or want 2 controllers as that is just throwing money away.
    1000 watt inverter won't run a microwave, a hair dryer, or a toaster. Living in a RV full-time, I'm trying to get as much power as possible within reason to emulate the comforts of home.

    Is a 48v LiFePo4 battery bank enough to power 6000 watts on the inverter safely?

    Actually I think a 4000 watt inverter would be sufficient.
    Thx.

    MD2020
    Last edited by MD2020; 12-10-2018, 08:07 PM.

    Comment

    • Mike90250
      Moderator
      • May 2009
      • 16020

      #3
      Originally posted by MD2020

      Can the Electronic Battery Isolator charge a 48V LiFePo4 battery bank from a 12V vehicle engine alternator?

      Thx,
      MD2020
      Nope. a isolator is just that. To charge a 48V bank while driving, I'd use a 12V inverter to power a honest 48V charger for the drive .
      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

      • MD2020
        Junior Member
        • Dec 2018
        • 19

        #4
        Originally posted by Mike90250

        Nope. a isolator is just that. To charge a 48V bank while driving, I'd use a 12V inverter to power a honest 48V charger for the drive .
        Can you recommend a device to do that?

        I hope I'm not hijacking this thread. If so, please advise and i'll start a separate thread. Thx.

        Comment

        • Mike90250
          Moderator
          • May 2009
          • 16020

          #5
          Originally posted by MD2020

          Can you recommend a device to do that?

          I hope I'm not hijacking this thread. If so, please advise and i'll start a separate thread. Thx.
          So, I moved the up-converter to it's own topic now.

          There are several DC-DC converters.

          You need to decide / figure out what voltage exactly you need, and how many amps.

          Then you have to discover which model (s) can charge a low impedance battery without burning themselves up

          Maybe the battery mfg can suggest a path

          Maybe a 12V hobby universal charger is the ticket

          some unverified ideas from a simple google search

          12v to 48v High Power DC-DC Converter   INPUT VDC 12 OUTPUT VDC (NOMINAL) 48 OUTPUT ADC 25 Read more Model 6948 ›





          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

          Working...