I have a few battery questions.

Discussion in 'Ask An Owner Operator' started by LondRanger, Aug 18, 2019.

  1. LondRanger

    LondRanger Heavy Load Member

    773
    1,193
    Jun 3, 2018
    0
    Is it possible to install 4 extra batteries under the cat walk? Like the they do for the battery powered APU but as extra battery capacity? The reason for this is i want to run really high powered electronics in my rig and don’t want to strain the current 4 batteries, when everything is on at once.

    I want to install 2 x 3000 watt inverters, one to power the appliances the other powering my entertainment system.

    Is it over kill? Or would the current batteries be enough with a TK apu charging things up.
     
    KB3MMX Thanks this.
  2. starmac

    starmac Road Train Member

    4,423
    7,306
    Apr 11, 2019
    Fairbanks Ak
    0
    It is possible. I don't know if I would want them under the cat walk. A guy could get the cross frame battery box off an old international cabover and it would be an easy deal. I would for sure have an isolator in the system, so that it couldn't run the truck batteries down.

    I hope you never park next to me and get this sound system blaring. lol
     
    FlaSwampRat, D.Tibbitt, KB3MMX and 2 others Thank this.
  3. AModelCat

    AModelCat Road Train Member

    12,221
    37,218
    Jul 7, 2015
    On vacation
    0
    The batteries are only there for starting, absorbing voltage spikes and providing limited power in the event of alternator failure. If you plan on running lots of electronics, upgrade the alternator to something that can supply everything.
     
    Dino soar and KB3MMX Thank this.
  4. LondRanger

    LondRanger Heavy Load Member

    773
    1,193
    Jun 3, 2018
    0
    Just dont park a reefer next to me, we good.

    The system would only be used when truck is either running or APU running, I’m wondering if APU has enough power to charge 8 batteries if system is in full use.

    I guess the APU alternator output would be the weakest link as well as the trucks.



    I am looking at alternators, but the issue is max is 160 amp, i cant seem to find something in the 200’s or 300 amp rating for a DD15, anyone know if 2 alternators are possible? I know vehicles are capable of it.
     
  5. starmac

    starmac Road Train Member

    4,423
    7,306
    Apr 11, 2019
    Fairbanks Ak
    0
    I worked on something once that had 2 alt's, maybe an ambulance. It is possible, but with the belt systems and room it would take some custom work.
    Typically the older apu's did not have a big alt, I do not know what is available today on them.
    If you are talking about just powering this stuff up,when you are parked, just get you a generator, might be the easiest and cheapest.
     
  6. LondRanger

    LondRanger Heavy Load Member

    773
    1,193
    Jun 3, 2018
    0

    Thanks, totally forgot about the possibility of a generator to power the entertainment, in conjunction with a APU to power the AC.
     
  7. LondRanger

    LondRanger Heavy Load Member

    773
    1,193
    Jun 3, 2018
    0
    I just also thought of something, if I’m running 3000 watts on the inverter wouldn’t that mean I’m only drawing 25 amps of power?
     
  8. starmac

    starmac Road Train Member

    4,423
    7,306
    Apr 11, 2019
    Fairbanks Ak
    0
    I am not sure how much power they draw, and I bet it depends on the quality of the inverter too. I know coleman I think it was several years sold a 3000 watt inverter, but it was a joke, it had 4 outlets and each outlet only put out 750 watts, witch wouldn''t run most coffee pots. lol
     
  9. Claytonbigsby

    Claytonbigsby Bobtail Member

    6
    43
    Mar 31, 2019
    0
    3000 w
    divided by
    12v
    250 DC amps
     
  10. starmac

    starmac Road Train Member

    4,423
    7,306
    Apr 11, 2019
    Fairbanks Ak
    0
    That does not seem right, there is a lot of trucks with a 3000 watt inverter and just a 140 or 60 amp alternator.
     
  • Draft saved Draft deleted