HD Battery

QuestionI have a 2007 Ultra Classic that is being temperamental on the start mode. I have owned it just short of a year. I just replaced the battery(orig. battery) thinking the under voltage release was doing its job. The new HD battery never has come up to full charge with a float charger. Ten hours all toll over two times of clipping it on. Turns over with good voltage according to the computer. Dumb founded.

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AnswerWe would not rely on what your charger reads. You need to use a multi-meter. Test your charging system.

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Harley Charging System Diagnosis

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10 Responses to “HD Battery”
  1. Bud Dobbins
    Bud Dobbins

    I have a 2012 Softail Classic. On cold days when I go to start it it turns over real slow and even to the point it stops and then will turn over ago then finally start. I keep my display on the gear/ rpm. When the bike cranks it shows mileage. I have had my local dealership check it out. They tell me that the charging system and battery are fine. They said it has to do with compression in the motor. I don’t have this trouble when it’s warm. I keep a battery tender on it at home. Any help would be greatly appreciated. Thanks !! Bud

  2. Sam Whiskey
    Sam Whiskey

    A few months ago had to get a new aftermarket battery for the stroked shovel and the float/maintenance .75ma charger didn’t get it charged enough to float it even after a couple nights. Connected it to a Schumacher 2a/10a/50a using the 2a and it finally charged enough to turn it off.
    A couple days ago had to get a new battery for a different scoot that is still stock and got an HD battery from the HD dealer, they said it was already charged and sure enough when it got home I checked it with the multi-meter and plugged it to the charger and it was all juiced up already. For grins connected the .75a float to it this morning and after about 1 minute it went to float mode.
    Now if I could just get the 6V float charger to someday turn off?@$%&!!

  3. Dennis Spaulding
    Dennis Spaulding

    At times my bike dies when i come to a stop im thinking fuel injection rpms go down to zero.what do you think oh other times rpms shoot up to 2500 for a few seconds

    • Customer Service Techs
      Customer Service Techs

      Hi, Dennis. We would be happy to assist you; we just need some more information. What is the make/model/year of your motorcycle?

  4. Ron Brown
    Ron Brown

    follow the diagnosis steps in determining if it’s the battery, voltage regulator, or stator. I did and found out it was my voltage regulator. It’s easy to swap out. I have a 2006 Ultra classic. good luck