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I dropped my road bike a while back and ever since the battery on the DI2 has been running out quickly / over a few days. I've isolated the issue to the rear mech' - if I unplug it, leave it until I use it, its fine. So there must be a short in the mech somewhere.
As I forget to unplug it, I'm regularly come back to find it needing to be charged up again - very annoying, especially if you are intending to get out on a ride!
It's an RD-6870 11 speed mech. Thing is, this isn't made any more. Now I cant see any reason why I couldn't bolt on a suitable alternative such as https://www.merlincycles.com/shimano-ultegra-r8050-di2-rear-derailleur-118803.html
Can anyone confirm the latest DI2 is backwards compatible? I'm guessing thats not the e-tube kit tho.
Cheers, Neil.
Shimano do a chart showing compatibility
Yep it works, mate had exactly same issue few weeks ago and replaced with 8050
Cheers both. I'll get that ordered.
MIght be worth finding out if your local bike shop got the new Etube software and sm-PCE02, as they can check for "‘Battery consumption" also it can force a update/rewrite of the mech. weather it fix it could be 50/50 but might be worth a try.
Cheers Rob - may be worth a go as the mech works spot on apart from the short...