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Shorai batteries

Discussion in 'Norton Motorcycles (Modern)' started by Fast Eddie, Dec 15, 2017.

  1. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
  2. MxMartin

    MxMartin

    Joined:
    Nov 13, 2017
    I did notice another quirk today, with engine running my speedo shows approx. 3mph and if I rev up towards 3k rpm I can get 5mph! That still doesn't explain my ODO discrepancy which has mysteriously gained 17miles from being parked.
     
  3. Fast Eddie

    Fast Eddie VIP MEMBER

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    Oct 4, 2013
    I think your Missus is secretly riding the bike when you’re not looking !
     
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  4. BritTwit

    BritTwit VIP MEMBER

    Joined:
    Aug 25, 2009

    The strange effect may be due to the residual effects from accidentally passing through an Einstein-Rosen bridge in a black hole, and then ending up again right back where you started.

    Of course, another possibility is that the current in another wire (Possibly the tach wire) in the harness next to the speedo wire is accidentally inducing a small current in the speedo wire. This type of problem has caused flashing lights for low fuel and other indicator lights.
     
  5. MxMartin

    MxMartin

    Joined:
    Nov 13, 2017
    Eddie Currents? Or Fast Eddie currents even? ;)
     
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  6. TonyA

    TonyA VIP MEMBER

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    Jan 16, 2015
    GOOD ONE !
     
  7. Raphi

    Raphi

    Joined:
    Aug 17, 2015
    Look on the bride side: your running in period will be shorter...:D
     
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  8. MxMartin

    MxMartin

    Joined:
    Nov 13, 2017
    My dash is back! ODO still out of wack but as you say, 17miles less to have to endure lol
     
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  9. contours

    contours VIP MEMBER

    Joined:
    Jan 1, 2012
    Got my LFX19A4-BS12 replacement from Shorai yesterday. If I could just gain access to my shed on the hill to install it. Been getting piles and piles of snow for the past week or more. With last night's winds I'm sure there's a giant snow drift blocking the entrance again. :rolleyes:
     
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  10. MxMartin

    MxMartin

    Joined:
    Nov 13, 2017
    I last ran the bike last Thursday, a good 75 mile trip. I didn't check the battery voltage but it should have been topped up close to 14V. It has been 5 days since it was parked up. I turned ignition on today to check battery voltage and it was indicating 11.7V, I hit the starter and the engine tried one miserable half-hearted crank and failed.

    This is crazy... 5 days! Back in the early 80's I had several 850 MkIII's and they all had good, reliable electric starts. I could drive up from London to my parents for long 4 day/5 day weekends and park bike up. I regularly went on bike rallies where the bike would often be parked up for a week whilst we partied. Never once in my 40+ years of biking have I ever put my key in the ignition and been concerned whether any of them would crank up. Yes the occasional fouled plug or chaffed wire would prevent firing up but never a flat battery :(

    For now I am able to keep the battery on charge so can use the bike as and when I like but will do some diagnostics at some point to see where current is being drawn with ignition off. I fitted a USB port a few weeks back but that shouldn't be drawing any power but will be my first port of call.
     
    contours likes this.
  11. TonyA

    TonyA VIP MEMBER

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    Jan 16, 2015
    I have done 3 days before not 5 . I will give this a try and report back.
     
  12. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    You definitely have an issue there Mx.

    Look at the mileage you have done compared to me, and yet I have never yet plugged my bike into a charger.

    Don’t compare to 70s stuff though! My ‘74 Cdo and ‘68 Bonnie both have (small) Shorai batteries and stood all winter, without charge, and fired up just fine.

    My 2016 BMW on the other hand, even with its half ton lead acid battery, was a dead as a Dodo after its winter lie up!

    Anyway, my main point is, you and I have the same bike and same battery, approx same age. Mine has stood for two weeks or more and started fine. Yours is flat in 5 days. Gotta be somat wrong mate...
     
  13. bushman

    bushman

    Joined:
    Jan 27, 2015
    The one thing I like about the Shorai batteries is the "delayed power cranking" - I have had two on my MV F4's and I don't charge them often, but when I get the bike out - one weak crank, like battery is dead. Turn it off, WAIT 1 MINUTE, try again, it will crank and start. I have heard the LION batteries have a recovery charge.

    That said one of the two batteries is dead, totally.

    The dealer confirmed that to charge a discharged unit, I have to use a regular charger to bring it then put it on the Shorai charger for storage.

    I also found that the run capacity for a LION battery is pretty short. My MV often blows charge fuses and I usually keep running with the gen light on till it stops. With a AGM battery I managed about 25 kms before it sputtered and died. On the Shorai it was one lap of a track before it just quit.

    I am not totally sold on them, and the expense kind of out weighs the life span - 1 only 2 years to dead. 2nd one needs constant charging and I don't have too much confidence in them at all now.
     
  14. contours

    contours VIP MEMBER

    Joined:
    Jan 1, 2012
    I had to replace mine before a year was up. The factory claimed one of the cells was bad from the start, but of course, charged me $100 for a new one. Once the riding season begins I will keep it on a charger. I am a bit skeptical.
     
  15. worntorn

    worntorn

    Joined:
    Dec 22, 2006
    I haven't tried Shorai but had very poor luck with both Ballistic Li batteries I purchased awhile ago.
    Both were dead by 18 months.
    The smaller one was in my 47 Vincent which has a modern Alternator charging system with solid state Podtronics reg.
    When the battery imploded it took everything with it, had to renew the works.
    In fairness to the battery maker, an Alton and Podtronics really doesn't consistently put out a high enough Voltage for the Li batteries.
    The seller at the time said it would be fine, but he was wrong.
    The Warranty was of little use and I really didn't want to chance another Ballistic battery in there.
    I'm back on Acid.:)


    Glen
     
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  16. BritTwit

    BritTwit VIP MEMBER

    Joined:
    Aug 25, 2009
    I'm still an acid dropper too.
    I mean, in the battery tray that is.
     
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  17. iwilson

    iwilson VIP MEMBER

    Joined:
    Nov 6, 2015
    I measured a constant current draw of just over 10mA (0.01A). I'd suggest either install a cutoff switch at the battery or use a quality maintenance charger. Must get round to checking where most of it's going, suspect it's the ECU.

    [​IMG]
     
  18. Fast Eddie

    Fast Eddie VIP MEMBER

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    Oct 4, 2013
    A battery isolation switch seems like a very good idea.

    Apart from it zeroing the clock (hardly the end of the world) are there any other known downsides to isolating?
     
  19. TonyA

    TonyA VIP MEMBER

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    Jan 16, 2015
    Yes , There is a draw on the battery . But , I thought my testing was supposed to confirm if a properly working 961 could be parked for a week without a maintenance charger and be expected to start ? This seems reasonable to me and should lay to rest any fears of traveling . Stay tuned . I have had my bike unplugged for 7 days in 30 deg F temps and I will report back how it went . Actually 8 days it was last Wednesday morning.
     
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  20. Fast Eddie

    Fast Eddie VIP MEMBER

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    Oct 4, 2013
    But what is the draw? It can’t be the bloody clock!

    And why do some suffer more that others?

    I have left mine for more than two weeks without starting it, and it fires up fine.

    Whereas Mx can’t leave his for two days!

    Both bikes are new, both have Shorai batteries, Mx had the same problems with the OEM lead acid battery.

    I’d love to know what’s happening and why...
     

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