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Hot Rods 6 volt battery question

Discussion in 'The Hokey Ass Message Board' started by 54BOMB, Aug 26, 2016.

  1. 54BOMB
    Joined: Oct 23, 2004
    Posts: 2,101

    54BOMB
    Member

    Hey we have this 38 ford , stock 6V pos ground and we had 5 batteries fail in almost 2 years . We checked for voltage drains , none found and the car is started about once week or so and drives great but after a few months the battery just won't stay charged up. These are just normal parts store batteries , not an optima or anything . I believe everything on the car is working normal . Just a short lifespan on batteries . Any ideas from the guys still running 6V systems ?
     
  2. henryj1951
    Joined: Sep 23, 2012
    Posts: 2,312

    henryj1951
    Member
    from USA

    I have the same BAD luck
    because the PQQR O'Henry---(candy bar)
    just doesn't get DRIVEN every day.
    so a battery tender keeps it READY to go...
    and TOTALLY disconnected for those long DOWN times.
    :cool:
     
  3. Mike51Merc
    Joined: Dec 5, 2008
    Posts: 3,830

    Mike51Merc
    Member

    I have the same 6V battery from NAPA for the last 8 years or so with no problems. Perhaps your charging system needs a good looking at. Even a bad ground can hurt your charging system.
     
    henryj1951 likes this.
  4. henryj1951
    Joined: Sep 23, 2012
    Posts: 2,312

    henryj1951
    Member
    from USA

    and i've had the same battery for 4 years ...Mike is CORRECT ....


    i have adjusted the regulator to put out a bit more and clean battery cables every year,
    and now i might need to check the generator (again) AND make SURE its puttin out...
    like some womens i know ...lol

    :cool:
     
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  5. 54BOMB
    Joined: Oct 23, 2004
    Posts: 2,101

    54BOMB
    Member

    It has new battery cables that are thick for 6v ,had a rebuilt generator , now has a new 6v alternator. New switch , solenoid, grounds were cleaned . We have been using a battery tender in between drives . Everything I can think of points to junk batteries , but this many ? So just asking you guys for reference.
     
  6. OKAY check all the above especially the ground cable. I have stock Model A Fords and get 6 - 8 years on 6V batteries. Be sure to keep water level up too. I'm using Deltran Battery Tenders on everything including my riding mower.
     
  7. jcmarz
    Joined: Jan 10, 2010
    Posts: 4,636

    jcmarz
    Member
    from Chino, Ca

    check for shorts.
     
  8. First check your voltage output with the motor doing about 1000 RPM- should be over 6 volts, around 7 (someone will help here with the correct charging voltage for a 6 volt system). You can do this by simply measuring across the battery with the motor running.
    If it is not higher than 6 volts , you have generator/ reulator problems. (This is assuming your battery is fully charged )
    Next, check the output of your battery tender- just turn it on & hook it onto the battery and measure the voltage again, should be higher than the battery voltage-around 7-9 volts.
    If these check out, your batteries or connections are suspect.
     
  9. F&J
    Joined: Apr 5, 2007
    Posts: 13,217

    F&J
    Member

    Agree to check output voltage at normal driving RPM. If it's overcharging, it will boil the battery, reducing it's life a lot.
     
  10. caton462
    Joined: Jul 17, 2013
    Posts: 176

    caton462
    Member

    Vibration and or heat can kill a battery pretty quick. I have noticed the batteries that come from a certain farm chain store in our area do not last very long.
     

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