Bad Battery?...Opinions?

Discussion in 'Airheads' started by CanteenBoy, Jan 9, 2013.

  1. CanteenBoy

    CanteenBoy Slammin' the ol' Jammer

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    Ok guys, I need some opinions on an electrical problem I had today....fairly sure my battery has just checked out, but wanted to get some feedback.

    The back story- My bike is a 1988 R100gs and I have a complete motorrad elektrik charging and ignition system (coil too). Battery is a sealed variety, probably at least 3.5-4 years old. I rode the last two days no problems, bike started and ran just fine...Rode home from work today (30min) and stopped at the top of my drive to get mail and cut the bike off. Went to start it again and....nothing but a click. Driveway is down hill so I tried to roll it off and still no joy despite good turn over. I could start the bike with a jump but as soon as I disconnected the jumper cables it died. Tightened up my throttle friction screw to hold a higher idle and then it would continue to run. Gen light functions as normal.

    So....is there any reason to suspect this is anything more than just a worn out battery? Thanks in advance, this forum has always been a great source of info!
    #1
  2. Bill Harris

    Bill Harris Confirmed Curmudgeon

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    Check voltages. The battery should be above 12V static, and the system voltage with the ALT light extinguished should be 14-ish V. Cranking voltage at the battery should be above 8V. Check the battery connections.

    --Bill
    #2
  3. some_guy

    some_guy Been here awhile

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    Sounds like what happened when my battery went. Started just fine in the morning, ran fine all day. Stopped for a bit and nothing other than a click. Took it in to test it and it was completely dead.
    #3
  4. CanteenBoy

    CanteenBoy Slammin' the ol' Jammer

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    To follow up...I had the battery tested today after spending all night on the trickle charger...100% bad. My mechanic said a cell probably failed and that was enough to kill it.
    #4
  5. AK Bob

    AK Bob AKAM

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    There is no corosion or a loose wire?

    Sticky solinoid? Relay?

    It would be a bummer to buy a new battery and then have the kiss principle bit you on the ah.. Wallet..

    I really like the pc-680 battery from odyssey that is in my GS..

    Best of luck checking it out.
    #5
  6. Martian

    Martian Long timer

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    My battery failed in the same way, but I was in the middle of nowhere, 600 miles from home. The bike was running great. I pulled over to take a break, and then, nothing when I tried to start it. After going over everything, I found a new battery, put it in, and away I went.
    #6
  7. CanteenBoy

    CanteenBoy Slammin' the ol' Jammer

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    Yeah, those would all be good things to check and I did make sure the connections were clean and tight....but surely if the battery was just drained down it would have passed the load test after spending all night on the charger.
    Also, this is a WestCo battery, and I have seen another thread on here discussing sudden failures in these batteries. I got almost 4 years of service from mine, lots of folks weren't nearly as lucky!
    #7
  8. Moonshiner

    Moonshiner aka "B-dog"

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    It's been my experience that, when they go, they go just like yours did. No warning, then...nothing. I posted in the Westco thread about my experiences. You can try to charge them but they won't take a charge. Bring them in for a load test, and they'll test bad.

    Luckily, you were close to home, and uphill from home, when yours failed.
    #8