Battery Bug = Good

Discussion in 'Parallel Universe' started by Dieselboy, May 31, 2012.

  1. Dieselboy

    Dieselboy Journey not Destination

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    I'm mid-ride between Florida and New York and notice that the battery bug is reading lower than normal numbers for running voltage. I'm seeing 13.3v at speed and 13.8v at idle. My battery was showing 12.2v in the morning before start up and caused the precipitous "hmmmmm"..... :huh

    So after pondering this for a few hundred miles, I considered it an issue. Had to go through the stages of motorcycle repair: :mad? deny (the diagnosis), :ddog delay (the decision), :norton despair (about repair), and finally- :pynd act.

    Carolina BMW Greensboro, NC was the closest help and they took care of it. I called ahead and rolled in. They confirmed the problem as the regulator and pulled a part from a bike to get me rolling. :thumb Thanks Joe and Drew.
    #1
  2. GB

    GB . Administrator

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    A voltmeter like the Battery Bug is definitely worth adding to the GS. I have one and I keep my eye on it when riding :thumb Glad it saved you and you got great service.
    #2
  3. Apostolos

    Apostolos Been here awhile

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    Glad it worked out for you.

    That's why I put the battery bug on sometime ago.

    You've got to know what's going on down there with these peculiar charging systems on our bikes. Also, the battery bug has some useful additional features as well, and I like the backlit on the new versions.

    God bless,
    David
    #3
  4. Dieselboy

    Dieselboy Journey not Destination

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    I'm getting condensation on the inside of the screen. I'm a little peeved but this gives me an excuse to get a new one with backlighting.
    #4
  5. SQ Beemer

    SQ Beemer Been here awhile

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  6. dvfisher

    dvfisher Adventurer

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    Yes, but there is also one for motorcycles where the positive and negative wires are together in one cable coming out the right side of the Battery Bug. It is much easier to connect to the battery as the cable is a few feet long. I have one on my bike and love it. Great way to monitor battery/charging voltage.

    Edit - This is the one you want http://www.argusanalyzers.com/batte...tery-bug-battery-monitor-argus-analyzers.html It's the BB-SBM12-PS. The PS stands for power sports like motorcycles and jetskis.

    Dave
    #6
  7. 'Flagger

    'Flagger ..this space for rent..

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    any idea if that's one of the newish regulators that address the abnormal voltage patterns evident on most F800GS'?
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  8. SQ Beemer

    SQ Beemer Been here awhile

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    Thanks!
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  9. Dieselboy

    Dieselboy Journey not Destination

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    I can't say but, I like what I am seeing. Running voltage reads between 14.1 and 14.5. Which is higher than anything I've seen off my original.
    #9
  10. Apostolos

    Apostolos Been here awhile

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    Is that idle or actual running voltage?

    Mine usually runs around 3.8 and idles between 4.1 and 4.4.
    #10
  11. FredRydr

    FredRydr Danger: Keep Back 500 Ft.

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    The voltmeter is great, but what is the meaning of "47%" displayed on the Battery Bug? Is it a gimmick, or is it an accurate reflection of the life of my battery? My battery was tested at the shop and it's fine.

    I'll get off my lazy ass and look for a Battery Bug manual online.

    Fred

    P.S.: http://www.bugmanweb.com/c6/c6files/batterybugownersmanual.pdf
    #11
  12. Dieselboy

    Dieselboy Journey not Destination

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    That's running voltage.
    #12
  13. Dieselboy

    Dieselboy Journey not Destination

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    I believe it is a measure of the lowest start up health. Last start up is marked by the flashing bar. My battery currently reads 30%.

    It has read lower. Happens when you start up, shut off, start up in quick sequence. Disconnect from the battery and reconnect. If it is still reading low you have an issue.
    #13
  14. Indy Unlimited

    Indy Unlimited Long timer

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    I carry a spare alternator and regulator on long trips. I too run the battery voltage indicator and it is very reliable to detect the difference from high 13s to low 13s.
    #14
  15. mustardfj40

    mustardfj40 Been here awhile

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    Hi, can you post a pic or two of where you place the display? Thanks.
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  16. Apostolos

    Apostolos Been here awhile

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    Here is where I placed mine. It hasn't budged since I installed it several months ago.

    [​IMG]

    God bless,
    David
    #16
  17. FredRydr

    FredRydr Danger: Keep Back 500 Ft.

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    The first photo shows where the Battery Bug is mounted on my F800GS. It is applied to a custom dash cover made by another inmate that I bought off the ADVrider flea market. It is essentially the same as the TouraTech cover, but allows the use of the BMW OE touring windscreen that I use in the winter. The second photo is of the TT dash cover on my bike with the Battery Bug, before I returned the cover to TT (because it did not work with the touring screen).

    Fred

    Custom dash cover:
    [​IMG]

    TT dash cover:
    [​IMG]
    #17
  18. Dieselboy

    Dieselboy Journey not Destination

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    Are the spares OEM or after market? Source?
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  19. Dieselboy

    Dieselboy Journey not Destination

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    I mounted mine to the right of the RID.


    [​IMG]
    #19
  20. JoelWisman

    JoelWisman Long timer

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    It is data that coupled with other things has meaning but without almost none.

    Battery bug assigns some numbers that they arbitrarily pulled out of their ass for what the average voltage should be during startup. They then assign an arbitrary number for what the voltage would be with a shitty battery. From that they measure the voltage during your last start and show it on the screen 100% being at their highest arbitrary number and 0% being their minimum arbitrary voltage.

    It wouldn't really matter if the voltages weren't arbitrarily assigned because oil condition, compression, in gear or neutral, ambient temperature, atmospheric pressure, engine temperature, starter motor commutator cleanliness and health, time since last startup, state of charge of battery, clutch drag, how long the engine takes to start, carbon build up in cylinder, and quite a few other things I am not bothering to type all influence how much current is drawn during startup none of which does the battery bug effectively compensate for.

    I have substantial education and practical experience in this area so if someone wants to front me $500,000.00 to design something that takes all of these things into account then I think we could get a fairly accurate unit to production that if we sold in bulk would cost around 10 grand per unit and only take 19 hours to install :rofl


    Use those numbers as a vague representation that something might be up, and if the reading is low during a warm startup that seemed normal you might bother to check if the terminals are tight and check the battery SOC and if all is peachy, load test the battery, but relying on the battery bugs battery state of health numbers causes needless anxiety and needlessly replaced batteries.

    The running voltages are very nice to have however.
    #20