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Thread: 1949 WLA Battery Size

  1. #1
    Join Date
    Jun 2015
    Location
    Long Beach, CA
    Posts
    46

    Default 1949 WLA Battery Size

    I have a stock 1949 WLA with its stock Battery Box.
    The system is converted to 12 volt.
    I currently have one of those very small batteries that I have spaced UP with a block of wood inside the battery box.

    I have factory spotlights on the bike.
    When I turn them on, the bike tends to die at idle; I think not enough juice at idle to feed the headlight + spots.

    So...
    Anyone had success at using a larger 12 volt battery that will still work in the battery box?
    Anyone had success at maybe using a "Cycle Electric" Generator; that may push more juice through the system?

    Thanks!

  2. #2
    Join Date
    Jun 2005
    Location
    Northern Colorado
    Posts
    832

    Default

    If your 12v generator is working correctly, there shouldn't be a problem with spotlamps. The popular small Yuasa 12n5.5 12 volt conversion battery is borderline too small for anything other than basic ignition and lights. I've been using AGM 12v conversion batteries the last several years with good luck, and they are rated at 14 amps, rather than the Yuasa 5 1/2 amps. I got the Werker battery number from Ricky Noot's website, it's available at Batteries Plus.
    VPH-D

  3. #3
    Join Date
    Jun 2001
    Location
    Central Illinois, USA
    Posts
    4,282

    Default

    1952300!

    The CE generator is the same as the OEM 12v generator in output.

    Beware the 5.5 amp batteries are usually only good for a season.

    ...Cotten
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

  4. #4
    Join Date
    Jan 2016
    Posts
    165

    Default

    Do you have the model number for that batteries Plus 14 amp battery? Is it this one? Copied from Noot.

    12 V Battery

    WERKER Model WKA12-12F
    (For Horsehoe Oil Tanks)
    Kick Start ONLY
    Generator Motors
    No Acid - No problems
    Can withstand heat and
    vibration . . .
    Length = 6"
    Width = 3 3/4"
    Height = 3 3/4"

    What model number is the AGM if you don't mind. If it fits in the battery box anyway.
    Last edited by DCoul; 07-20-2016 at 07:32 PM.

  5. #5
    Join Date
    Jun 2005
    Location
    Northern Colorado
    Posts
    832

    Default

    DC,
    Yes, that is the battery I'm using. I always hated the little 12n battery, as they needed weekly maintenance, and I'm lazy. My brother, however, is able to beat 2 seasons out of the little things.
    VPH-D

  6. #6
    Join Date
    Jun 2015
    Location
    Long Beach, CA
    Posts
    46

    Default

    I have a "45", so I do NOT have that horseshoe oil tank...
    Just the tall square battery box.
    Will have to measure and see if that model will slide in.

    Anyone know how, with a volt meter, to check how many amps are flowing with my current tiny battery and 12 volt generator/regulator?

  7. #7
    Join Date
    Aug 2004
    Location
    Beautiful Northern New Mexico
    Posts
    2,764

    Default

    The battery made for the stock horseshoe tank is the same one made for 45s. The box dimensions are identical.
    Robbie Knight Amca #2736

  8. #8
    Join Date
    Oct 2011
    Posts
    479

    Default

    Quote Originally Posted by 1962300 View Post
    I have a "45", so I do NOT have that horseshoe oil tank...
    Just the tall square battery box.
    Will have to measure and see if that model will slide in.

    Anyone know how, with a volt meter, to check how many amps are flowing with my current tiny battery and 12 volt generator/regulator?
    Most multimetrers with an amp function usually only go to 10A,and the gauge would be put between the battery pos.and everything else.You could use an auto tye 30 A temporary at battery.
    Tom

  9. #9
    Join Date
    Jun 2015
    Location
    Long Beach, CA
    Posts
    46

    Default

    I checked my battery today on my 1949 "45". What I have is a Power Source Sealed Battery #WP7L-BS (12V6Ah).
    Has probably been in the box for 3 or 4 years.
    Just concerned it doesn't have enough output for the Light + Spotlights.

  10. #10
    Join Date
    Jun 2015
    Location
    Long Beach, CA
    Posts
    46

    Default

    Picked up a larger battery, that I will slide into the battery box this evening. That will make this batteries terminals live sideways in the box. So, I need to add in a cloth or piece of rubber, so the terminals / wires aren't up against the metal sidewall of the box.
    Anyone make anything good to share for such a scenario?
    Thanks

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