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Di2 Frustrations

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  • November 26, 2015 at 9:48 am #25096
    Martyn_K

    So i grab the bike from the spare room yesterday to go out for a ride. It’s a dry day so i opt for the ‘posh bike’ as it’s nice to keep the body used to the more aggressive position.

    Any way i attempt to drop the chain down to the 11 sprocket in order to put the outdoor wheel on (it lives on the turbo during the winter months) but nothing. No shifting. Clicky clicky, not a peep. Nothing on the FD either. I press the ‘adjust mode’ button on the stem junction box and it lights up, so there is power & connections there. I double checked all connections, all terminations are solid.

    I plug it in to the e-tubes application in order to do a quick check. All firmware up to date. It tells me that the battery can be seen, but the juntion box A is not there (despite the software being connected via junction box A). Now the other half also has a Di2 bike, so i swap the junction box A from her bike with mine. Her shifting still works (with my box A), mine still fails. This tells me that it is not a problem with the junction box.

    Now, i should explain at this point that i had a replacement battery in April this year, after similar problems were found to be due to an unknown battery issue. So i immediately decide to focus my diagnostics to the battery. As explained earlier i have access to another Di2 bike, so i swapped the battery from that to mine.

    Pow! I now have all shifting on my bike. Next step, connect my battery to the other bike. Doh! No shifting at all. Ok, my battery proven dead. Which is interesting as both bikes get charged at the same time, do about the same miles, have firmware updates at the same time and are also being stored in the same place. Strange.

    I charge my battery overnight and have another test in the morning. Still the same. So it appears that i have another knackered battery, the second since original purchase in July 2014.

    Has anyone else had issues of this nature?

    It’s just so frustrating and after investing in a Di2 bike for the missus feel like i’m just waiting for the same issue on her bike too.

     

     

    PS: Cue the mechanical stalwarts posting ‘supportive’ messages regrding the joys of cabled groupsets!

     

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  • November 29, 2015 at 5:45 pm #863413
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    Cyclespeed Tours

    My Di2 9070 battery has been

    My Di2 9070 battery has been giving me some grief too. 

    About 6 months ago I couldn’t get it to take a full charge – spoke to Shimano, they said don’t charge it from a wall, ‘plug – in’ charger, but use a computer or lap top – weird, but that worked.

    More recently, I fully charged the battery then went away for 10 days. When I came back the battery was dead, like totally dead.

    But it did take a charge. Although it now won’t take more than 60% (I have the battery displayed on my Garmin).

    I’ve just ordered a new battery from the big cycle shop that starts with a W, and it was ‘only’ £50.

    November 27, 2015 at 5:23 pm #863411
    0
    Martyn_K
    mike the bike wrote:
    Well young man, you’ve got your just desserts.  Dabbling in the black arts of electricity never did anyone any good.  If the good Lord intended us to have electric gears he would have given us only four fingers, all made from copper.  But you’ve done it now, you’ll bring down the fires of hell and the plagues and the pestilence that grandma used to warn us about, and then where shall we be?

    But there may still be time to repent.  If you rip it all off the bikes and send it to me by 1st class post we’ll say no more about the whole distasteful episode.

     

    I don’t want to send all the groupset in one consignment so i’ll start with the knackered battery if thats ok? 🙂

    I have spoken to the dealer who replaced the battery in April and they have asked for the battery to be sent to them for testing. I have bitten the bullet and ordered a replacement anyway. When the knackered one is replaced i’ll have a spare.

    Things to do in January are take it to my local excellent bike shop and run a full test on the system to make sure there are no shorts anywhere. I have some spare Di electrical cables from other builds so won’t have to buy any replacements if one is dodgy.

    Damn bikes, never ending money pit!

    November 26, 2015 at 5:53 pm #863409
    0
    rjfrussell

    sounds like a short somewhere

    sounds like a short somewhere.

    November 26, 2015 at 5:14 pm #863407
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    mike the bike

    Well young man, you’ve got

    Well young man, you’ve got your just desserts.  Dabbling in the black arts of electricity never did anyone any good.  If the good Lord intended us to have electric gears he would have given us only four fingers, all made from copper.  But you’ve done it now, you’ll bring down the fires of hell and the plagues and the pestilence that grandma used to warn us about, and then where shall we be?

    But there may still be time to repent.  If you rip it all off the bikes and send it to me by 1st class post we’ll say no more about the whole distasteful episode.

    November 26, 2015 at 5:08 pm #863405
    0
    CXR94Di2

    Unlucky to say the least,
    Unlucky to say the least, maybe your charger has a fault and it is damaging the battery. Personally I had my bike nearly 2 years and it has been perfect. I use a low current mobile phone charger to charge mine.

    November 26, 2015 at 4:13 pm #863403
    0
    sergius

    That’s rubbish.  I wonder if

    That’s rubbish.  I wonder if it’s some other part of the system that is causing problems with the battery over time (something that shorts/drains it or somesuch).

     

    It might be worth putting a replacement battery on your wife’s bike and moving her battery onto yours – see if the same problem recurs.

    I’ve only had my Di2 system for ~8 months with (touch wood!) no problems. I did some research on the battery storage and from what I found (and posted here some time ago) leaving it outside in the cold is not a problem.  Using Di2 in very low temperatures shouldn’t damage the battery, but you will get considerably fewer shifts per charge at a lower operating temperature.

    I’ll no doubt find it completely dead when I get that bike out again after the winter! Reminds me to take it out for a quick spin this weekend if it’s dry.

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