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Thread: New Odyssey PC680 battery!

  1. #1
    Registered User jsouth's Avatar
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    New Odyssey PC680 battery!

    I finally retired my old Odyssey and bought a new one. The old one was on the bike when I bought it in February 2011, and has worked for 6.5 years and 30,000 miles after I bought the bike. Even after rejuvenating it this spring, it would not start the bike any more by late summer.

    Got the new one in and it works like a champ. As I had old and new side by side, I noticed what I think is a date code on the sticker on top of the battery. It appears my new battery was manufactured in 6/17 and the one that came out in 10/04. If true, that's not a bad service life for a motorcycle battery -- even if installed 4 months after manufacture, it worked for 12.5 years.

    I'll take those odds!

  2. #2
    Day Dreaming ... happy wanderer's Avatar
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    They really are well made batteries. It may have lasted even longer with a higher voltage regulator on the alternator. Stock is around 14 volts but the Odyssey prefers around 14.7 to keep it in top shape and prevent any sulfation which is what eventually kills them. That is still pretty good performance though considering we used to be happy with 2 or 3 years with flooded lead acid cells. Even they can last quite a long time with proper maintenance though.
    MJM - BeeCeeBeemers Motorcycle Club Vancouver B.C.
    '81 R80G/S, '82 R100RS, '00 R1100RT

  3. #3
    Registered User jsouth's Avatar
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    I have the regulator, but have not yet pulled the alternator to install it. I do use a charger (CTEC 4.3) which does the proper charging voltage.

    Looking back through the service records, if that date code was right, the battery has seen over 70,000 miles in 12.5 years.

  4. #4
    Registered User roger 04 rt's Avatar
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    I just bought an R1150GS with a PC680, I ran the battery through four full recharge cycles and it now takes 10% more charge than when I bought it. And I've started charging it with a correct battery charger, but I haven't modified the VR yet.

    After a 45 minute ride--being charged at 13.7V--when I connect it to my 14.7V charger, it immediately draws 2-3amps and takes about an hour to get to 100% charge. This is a pretty good indication that the stock VR can't do the job.

  5. #5
    Day Dreaming ... happy wanderer's Avatar
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    Quote Originally Posted by roger 04 rt View Post
    I just bought an R1150GS with a PC680, I ran the battery through four full recharge cycles and it now takes 10% more charge than when I bought it. And I've started charging it with a correct battery charger, but I haven't modified the VR yet.

    After a 45 minute ride--being charged at 13.7V--when I connect it to my 14.7V charger, it immediately draws 2-3amps and takes about an hour to get to 100% charge. This is a pretty good indication that the stock VR can't do the job.
    I've been too lazy to modify mine but I put the RT with the PC680 on my Centech charger whenever I've been on a long trip or just periodically when I'm riding it locally. It does exactly as Roger described. Tops up and finally goes on maintain mode. The PC680 on my R80G/S fares better as I installed an adjustable regulator and set it to around 4.5VDC. I should just set it to 14.7 but I thought I would start there and see what happens. It takes significantly less time to top up than the RT one does.
    MJM - BeeCeeBeemers Motorcycle Club Vancouver B.C.
    '81 R80G/S, '82 R100RS, '00 R1100RT

  6. #6
    Registered User PAS's Avatar
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    I will agree about getting the recommended charger for the PC-680! I have one in my 81 R100RT and 03 R1150RT and keep them topped off. The 81 has a higher charging rate then the 03 oddly enough.

  7. #7
    A PC-680 is still going strong after 9 yrs my stock R1100S with occasional use of a Battery Tender Jr. Not sure what the hubbub is about...

  8. #8
    Registered User tangoalpha's Avatar
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    Dead battery symptoms must be going around lately; mine just gave up the ghost also. I just ordered a new BMW gel battery for my RT and it should be here tomorrow. I keep my RT plugged in to my Deltron Battery Tender Plus while the bike is parked in the garage, so hopefully I'll get many years of service life from this new battery.
    "Der Bimmer ist wunderbar."

    Tango Alpha
    2002 R1150RT

  9. #9
    Day Dreaming ... happy wanderer's Avatar
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    Quote Originally Posted by GIARCG View Post
    A PC-680 is still going strong after 9 yrs my stock R1100S with occasional use of a Battery Tender Jr. Not sure what the hubbub is about...
    Have you read the documentation on your PC680? The hubbub is about the manufacturer's specifications which are different to the battery our bikes came with. Early death of an Odyssey battery is not likely to happen due to under charging however what you do get is reduced capacity and more sulfation which will inevitably lead to reduced life. Now that said, of course nine years is great when compared to other chemistries out there but if you were in a situation where you needed to crank the bike for a long time or repeatedly over a long time due to starting problems or whatever you would not have all the capacity that battery is capable of.
    MJM - BeeCeeBeemers Motorcycle Club Vancouver B.C.
    '81 R80G/S, '82 R100RS, '00 R1100RT

  10. #10
    Left Coast Rider
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    Panasonic battery. 7 years and counting. $99.00 Cdn. On a Tender Jr. unless its being ridden or I'm on a trip. I feel like the odd man out here.

  11. #11
    Registered User m_stock10506's Avatar
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    Quote Originally Posted by BC1100S View Post
    Panasonic battery. 7 years and counting. $99.00 Cdn. On a Tender Jr. unless its being ridden or I'm on a trip. I feel like the odd man out here.
    +1 - not at all. I have great results with the Panasonic AGM batteries. 28AH models in my Airheads, they go 6 years or more, still showing 12.8 resting volts when I change them out just to be safe. 20AH version in my Oilhead. I was getting 2-3 years, but now I've been using the BatteryMinder charger which has the desulfation mode and I'm coming up on 3 years with no sign of weakness.
    Michael Stock, Trinity, NC
    R1100RT, R100, R60/6

  12. #12

    Smile

    Quote Originally Posted by happy wanderer View Post
    The hubbub is about the manufacturer's specifications which are different to the battery our bikes came with.
    Okay then... enjoy your hubbub. I'll apply the 9 plus years of real world experience with the battery and remain hubbub free....

  13. #13
    Rainwater 55380's Avatar
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    Another Odyssey battery fan

    Quote Originally Posted by GIARCG View Post
    Okay then... enjoy your hubbub. I'll apply the 9 plus years of real world experience with the battery and remain hubbub free....
    My Odyssey has been in my 2002 R1150RT for about 8 years with no problems. The battery has withstood maybe 3 full (accidental) discharges with a full recovery after recharging with a stock BMW charger (circa 2002).
    BTW, I recently sent my Sargent seats back to Sargent for "Refurbish". I instructed Sargent to install the heating elements in the Rider and Pillion seats while they were putting new covers on the seats. Reading this battery/charging system info has me thinking about upgrading to a higher voltage charger and VR. A Gerbing jacket, heated grips, and two heated seats may justify the added V x I = W.
    Rainwater

  14. #14
    Registered User jsouth's Avatar
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    As a postscript to this thread, I have now updated the voltage regulator to the 14.5V one. I had to have the tank off to rewire my Hall Effect Sensor, so I went further, removed the ECU and ABS modular unit and pulled the alternator in order to change the VR. So the PC680 will be getting the proper charging voltage while riding!

  15. #15
    Quote Originally Posted by 55380 View Post
    I instructed Sargent to install the heating elements in the Rider and Pillion seats while they were putting new covers on the seats. Reading this battery/charging system info has me thinking about upgrading to a higher voltage charger and VR. A Gerbing jacket, heated grips, and two heated seats may justify the added V x I = W.
    The juice for all equipment needs to come from alternator amps, not battery charger volts.
    Lee A. Dickinson - Danielsville, GA USA
    MOA 80364 | RA 29650 | ABC 3480 | IBA 8914
    1992 R100RS - 1993 K1100RS - 2013 R1200GS

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