Average lifespan of Odyssey PC680 battery in motorcycle

Discussion in 'Airheads' started by khale, May 14, 2012.

  1. khale

    khale ride dirty

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    I'm looking to find out what the average lifespan of the Odyssey PC680 is. I have a 1973 r75/5 that doesn't want the battery to stay charged. I'm trying to figure out if my battery needs replacing or I need to dive into the electrical of my bike. The battery is 6 years old. Was put in the bike in 2006.
    #1
  2. ozmoses

    ozmoses Ride On

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    Hopefully much longer than a Westco... yup, I'm gonna be "that guy"!

    Cereally, I'm wondering the same thing about the PC680 i recently purchased.
    #2
  3. Hawk Medicine

    Hawk Medicine Coyote's Brother

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    Forget about the battery until you've taken time to test your charging system for proper operation.

    Meanwhile, place the battery on a charger and see it it holds it's charge. Odyssey PC680 have a rep for long life. Westco? None for me thanks...
    #3
  4. khale

    khale ride dirty

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    What should I be reading at for certain RPM's on my voltmeter? I imagine around 13.5V and higher correct?
    #4
  5. Airhead Wrangler

    Airhead Wrangler Long timer

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    What he said. Even if it is your battery, 6 years out of a battery isn't bad.
    #5
  6. crazydrummerdude

    crazydrummerdude Wacky Bongo Boy

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    I'm reminded of:

    #6
  7. Wirespokes

    Wirespokes Beemerholics Anonymous

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    Remove the negative lead from the battery. Set the meter to amps. Attach the positive (red) lead to the battery negative terminal. Attach the negative lead to the cable.

    With the ignition off, the meter should read zero.

    Switch the meter to milliamps. It should still read zero. If not, find out what is draining the battery.
    #7
  8. Biebs

    Biebs BMW Airhead

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    Assuming you have a volt meter.

    1. check battery voltage (after charging) static bike off should be about 12.5 volts. Then wait a couple of hours ( go have coffee or a beer) check again should still be 12.5 volts it it has dropped then bike is drawing power when off or battery is bad. Disconnect battery and repeat above test this will test just the battery.


    2. With bike running check voltage at battery should read ~13 volts more as RPM increase if not check bike charging system.


    This is a way of isolating the probem to either battery or bike.

    I have had a PC680 in my 74 R75/6 for 4 years no problem great battery. Uses half the space as original and I can remove it without dropping subframe.
    Only problem is the price of a new one I see they are about $150 now.

    :freaky
    #8
  9. lkchris

    lkchris Albuquerque

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    These are "storage" batteries and bigger = more storage.

    But, in motorcycles they are small and don't store much.

    Your approach should be: if the motor's not running, a battery charger should be attached. This is a fact of life of motorcycle ownership.
    #9
  10. alister102

    alister102 Been here awhile

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    May 19, 2008
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    I got 7 years out of my 680-
    #10
  11. boxerkuh

    boxerkuh Been here awhile

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    I was going through a simular problems a few years ago.... Here is what I did and found out: I took the battery out and took it to Auto Zone and had it tested. Did not know what the cold cranks were so I told them about maybe 400.... they tested it twice and it came back both times as good. Then I emailed Odyssey to find out some info. They told me that the cold crank is only 220 and if it tested good at 400 twice the battery was as good as new. The battery was 6 years old at the time and I heard about abrupt battery failures... well that was 4 years ago and the battery is still in the bike and is working wonderfully. Odyssey told me that the average life of the battery is anywhere inbetween 7 and 12 years. After some further investigation it turned out that the diode board had a bad ground. It was repaired and no problems since. Hope that helps.
    #11
  12. Rucksta

    Rucksta SS Blowhard

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    I killed my 320 at 3 years +
    I put chokes on the bike and tidied up the charging system then slotted the 680 back in.
    It was 2 years old when I benched it for the 320 and it seems to be holding up well.

    Conclusion. you can kill these things but you have to try really hard.
    #12