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  1. #1
    Join Date
    Aug 2012
    Location
    Hermiston Oregon
    Posts
    248

    Default battery. dies every couple of weeks?

    The battery on my bobcat 225nt dies. What could it be. ive checked the cables. Their tight. What's the voltage need to be while running? 14v?
    .
    Miller Bobcat 225NT onan
    Millermatic 211
    Spoolmate 100
    (Retapped to fit regular mig tips)
    Work better & less parts to stock.
    Miller 130xp
    T/A Dragster 85 (portability 11 pounds)
    Oxygen/Acetylene torch set 50'
    2. 4-1/2" grinders
    1. 9" grinder
    14" Makita chop saw
    1/2" Aircat impact gun 900#

  2. #2
    Join Date
    Dec 2011
    Posts
    392

    Default

    Load test your battery with a carbon pile. Put an ammeter, dc clamp-on, type to verify that your battery is being charged and check with the same ammeter that the battery is not being discharged in the off condition . Proceed from there.
    Meltedmetal
    Last edited by Meltedmetal; 11-21-2012 at 05:50 PM. Reason: dyslexia

  3. #3
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,742

    Default

    That or your oil pressure switch is defective and keeping the circuit closed, thus draining your battery

  4. #4
    Join Date
    Sep 2005
    Location
    16919 Pole Rd. Brethren, MI 49619
    Posts
    4,383

    Default

    I got one draining, hadnt thought of that.

  5. #5
    Join Date
    Aug 2012
    Location
    Hermiston Oregon
    Posts
    248

    Default

    Newer battery. But I'll. Check it.
    .
    Miller Bobcat 225NT onan
    Millermatic 211
    Spoolmate 100
    (Retapped to fit regular mig tips)
    Work better & less parts to stock.
    Miller 130xp
    T/A Dragster 85 (portability 11 pounds)
    Oxygen/Acetylene torch set 50'
    2. 4-1/2" grinders
    1. 9" grinder
    14" Makita chop saw
    1/2" Aircat impact gun 900#

  6. #6
    Join Date
    Aug 2012
    Location
    Hermiston Oregon
    Posts
    248

    Default

    Is there a way to trouble shoot the pressure switch. Where's it located?
    .
    Miller Bobcat 225NT onan
    Millermatic 211
    Spoolmate 100
    (Retapped to fit regular mig tips)
    Work better & less parts to stock.
    Miller 130xp
    T/A Dragster 85 (portability 11 pounds)
    Oxygen/Acetylene torch set 50'
    2. 4-1/2" grinders
    1. 9" grinder
    14" Makita chop saw
    1/2" Aircat impact gun 900#

  7. #7
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,742

    Default

    Under the left side engine shroud, kinda under the coil

  8. #8
    Join Date
    Oct 2007
    Location
    Cave Creek Az
    Posts
    990

    Default

    Not having gone out and looked at mine (too cold) I would guess just disconnect the wires and use the continuity test on a multimeter and check for continuity if you do it is stuck on, if not its okay. That is just a guess, but that is the first thing I would try.

  9. #9
    Join Date
    Aug 2012
    Location
    Hermiston Oregon
    Posts
    248

    Default

    Ok thanks for the idea I'll try. That. I just been busy I get to it later or tomorrow. Thsnks.
    .
    Miller Bobcat 225NT onan
    Millermatic 211
    Spoolmate 100
    (Retapped to fit regular mig tips)
    Work better & less parts to stock.
    Miller 130xp
    T/A Dragster 85 (portability 11 pounds)
    Oxygen/Acetylene torch set 50'
    2. 4-1/2" grinders
    1. 9" grinder
    14" Makita chop saw
    1/2" Aircat impact gun 900#

  10. #10
    Join Date
    Dec 2011
    Posts
    392

    Default

    Quote Originally Posted by cruizer View Post
    That or your oil pressure switch is defective and keeping the circuit closed, thus draining your battery
    Short-cut from the voice of experience. I'm guessing that this is a common failure (Judging from the line-up with similar complaints.) and the suggestion is to swap it out. It's about 35$ for the kit at miller4less. If you really want to be sure that was it, check before and after for current drain when in the off position. Meltedmetal

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