Mysterious Di2 battery drain
Moderator: robbosmans
Hardware:
- Ultegra 6870 Di2.
- BT-DN110 battery
- EW-WU101 D-Fly
- newest firmware for all components
Problem / timeline
- Sunday 14/5 dead battery (pretty sure I had at least 60% left the day before)
- Recharged when I got home
- Dead a few days later
- Ordered a new battery, gave it a full charge
- Looked OK at first
- Dead after 3 days of idling
- Gave it a full charge and unplugged FD
- Still 100% after 48 hrs
- Plugged in the FD again, still 100% after 48 hrs
- Did a 190 km/6 hr ride last Sunday. Started with 100%, came home with 100%
- Now (Tuesday) battery is 60%
- Couple of hours later 40%
- Plugged out RD
- Today still 40%
Any suggestions.... Did not read fault codes since I don't have the right interface. Will visit the LBS tomorrow to do so.
- Ultegra 6870 Di2.
- BT-DN110 battery
- EW-WU101 D-Fly
- newest firmware for all components
Problem / timeline
- Sunday 14/5 dead battery (pretty sure I had at least 60% left the day before)
- Recharged when I got home
- Dead a few days later
- Ordered a new battery, gave it a full charge
- Looked OK at first
- Dead after 3 days of idling
- Gave it a full charge and unplugged FD
- Still 100% after 48 hrs
- Plugged in the FD again, still 100% after 48 hrs
- Did a 190 km/6 hr ride last Sunday. Started with 100%, came home with 100%
- Now (Tuesday) battery is 60%
- Couple of hours later 40%
- Plugged out RD
- Today still 40%
Any suggestions.... Did not read fault codes since I don't have the right interface. Will visit the LBS tomorrow to do so.
Last edited by havana on Wed May 24, 2017 6:48 am, edited 2 times in total.
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Using a usb outlet that came with my iPhone.
I forgot to mention I sometimes hear a couple of clicks coming from the RD when I wake up the system.
Just came home, lost another 20%. Unplugged the RD. Will check in the morning.
I forgot to mention I sometimes hear a couple of clicks coming from the RD when I wake up the system.
Just came home, lost another 20%. Unplugged the RD. Will check in the morning.
Editor-in-chief CycloWorld.cc - the largest database of gran fondo's and sportives in the world.
My suspicion is that your RD is not adjusted correctly and its "between gears". In other words, if the setup is not done correctly, and the shift ends up part way towards the next cog, the RD is constantly trying to make the shift and keep the motor active. Make sure you follow the manual for the rear setup.
goodboyr wrote:My suspicion is that your RD is not adjusted correctly and its "between gears". In other words, if the setup is not done correctly, and the shift ends up part way towards the next cog, the RD is constantly trying to make the shift and keep the motor active. Make sure you follow the manual for the rear setup.
That cannot be the cause, after a few attempts to change, the engine returns the derailleur to the previous position by security
Sounds more like a faulty battery
I've replaced more than a few lately
I've replaced more than a few lately
I was speaking about the H screw. That's what i thought you were referring to.
The L should be as close to the derailler stop as possible but not touching. If you backed the L screw out 1 full turn it would probably cause the RD to go into the spokes, so don't do that.
Yes the L screw being overtightened would cause the battery to drain.
The L should be as close to the derailler stop as possible but not touching. If you backed the L screw out 1 full turn it would probably cause the RD to go into the spokes, so don't do that.
Yes the L screw being overtightened would cause the battery to drain.
Thanks, I already understood you were talking about the H-screw there.
The funny thing is that the RD stopped making the "click click click" noise after re-adjusting.
The funny thing is that the RD stopped making the "click click click" noise after re-adjusting.
Editor-in-chief CycloWorld.cc - the largest database of gran fondo's and sportives in the world.
Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓ Broad Selection ✓ Worldwide Delivery ✓
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