Battery life

Discussion in 'Softail Models' started by Billbo, Sep 23, 2013.

  1. Billbo

    Billbo Junior Member

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    Ok I have a simple question. I have a 2 year old HD battery installed by dealer who also said the charging system was operating just fine.

    Question is without being on a battery tender, how long could or should the battery maintain a full charge when just sitting parked in a garage? No electrical drain as far as I know.

    obviously my battery ran down and I was just wondering. It is always (normally) connected to the battery tender Jr when parked in my shop and I have no problems.

    thanks for replys
    Bill
     
  2. Jack Klarich

    Jack Klarich Expert Member

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    The long and short answer is a battery goes thru charge and discharge thru its lifetime, keeping it on a tender is the best advice plus it helps to keep your charging system from over working. Expect to see 12.7 volts on a fully charged battery after a surface charge is removed.
     
  3. Billbo

    Billbo Junior Member

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    thanks Jack - do you think it would go down within about 4-6 weeks if NOT on the tender?

    Bill
     
  4. Jack Klarich

    Jack Klarich Expert Member

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    Sure, The speedo and ECM draw power even when the bike is not running, if your battery load tests OK keep it on a tender:s
     
  5. Billbo

    Billbo Junior Member

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    thanks Jack.

    Bill
     
  6. fin_676

    fin_676 Experienced Member Staff Member Moderator Contributor

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    Modern electronics often need a wee bit of power through them to maintain settings and provide a faster boot time so a vehicle battery will drain if left connected over a period of time
    My old bikes on the other hand keep the charge for a long time however i do use an optimate charger every couple of months during the cold season

    Brian
     
  7. doctor727

    doctor727 Active Member

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    Bill, I agree 100% with Jack on this.
     
  8. Billbo

    Billbo Junior Member

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    OK Jack, I hooked up the battery tender and let it stay for a week, then it still would NOT crank the bike - just 'clicked" (solinoid I guess). The battery is 5 years old - I spose it's timie for a new one - what do you think?

    Bill
     
  9. tourbox

    tourbox Senior Member

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    I would think after 5 yrs. it would be time for a new one.
    tourbox
     
  10. Jack Klarich

    Jack Klarich Expert Member

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    Dead as a hammer? Like Ray said 5 years time for a new battery