Electronic & Hydraulic Shifting (Di2, Ui2, customisations)

something like this and a saddle mount ?

anyone got a better idea?

Use an internal battery

Yeah, but I’d like to be able to take the battery off to charge it and not have to plug the bike in...

Cheers for the image above, that’s what I need - and cheers @amey for the link 👍🏻👍🏻

I’d like to be able to take the battery off to charge it and not have to plug the bike in...

Why?

You only need to have the bike near a plug once every couple months for a couple hours

because at some point I'll have forgotten to charge the battery and be in the office/touring or whatever and it would be good to be able to take the battery off to charge... plus I have two external batteries and can't be arsed to buy an internal one and a new junction box...

because at some point I'll have forgotten to charge the battery and be in the office/touring or whatever and it would be good to be able to take the battery off to charge...

But you'll have carried the charger with you?
I'm not sure it's any easier to charge either. Having it removable might be handy if you have limited bike storage at home and no plug but either way you have to have the charger and it just seems simpler to me to leave it on the bike and never have to touch it. Just popping a wire in the junction whilst it's on the bike couldn't be simpler

Yeah, I carry a Di2 charger and use either my dynamo USB output or a small cache battery and charge my internal Di2 battery on the go. There's no need for external Di2 batteries.

There is a mod you can do to build the charger in somewhat so you just need standard USB too.

yeah I hear you, I've got both setups at the moment and only run out of charge once on the internal one... I'll get an internal battery for the other bike at somepoint but for now I'm trying not to burn any more cash... was hoping to find a neat mount for £10ish...

but for now I'm trying not to burn any more cash...

This I can understand

Dynamo charging is something I'm planning as well at some point, I've got all the bits but haven't set the bike up to run it yet... and I have the external battery already so will stick with it...

@PhilDAS @amey Cheers all! 🙌

Bear with me while I try and describe a perculiar Di2 problem which has just cropped up recently...

Changed my seatpost a couple of weeks ago (obvs requiring disconnecting the battery and reconnecting it). A few days later I go for a ride, but no gears. The battery seems properly connected to the wire inside the seatpost, but I disconnect it and reconnect it anyway using the tool. Yay, gears. Off I ride. A few days later, another ride. No gears again. I disconnect and reconnect the wire going into the battery, and I have gears, but this time the indication light on the junction box is red. I'm sure it was green before. Red but not flashing is alright, isn't it, so off I go, only for the gears to totally stop shifting after 2km. Didn't even chuck me into the little ring. Go home, start charging and after 2 hours or whatever, everything seems fine. Every connection I can get to on the bike seems okay, nothing dodgy. Overnight the battery keeps charge and the indication light is still green, so I go for a ride. All fine. That was yesterday. Now I think "oh I'll check my Di2 again" and... it's dead. WTF is going on? I'm going to need to bung it into a shop, aren't I?

May be a complete red herring, but when I had those kind of issueswith my di2 i had water inside the frame which was causing a lot of mischief, as a drainage hole had blocked?

Once it had lost the water from inside it started working fine!

No need for plugs, it charges fine off a USB power bank.

Yeah Hippy said

I've a R8070 shifter which seems to have died in a crash, minor scrapes but i'm getting nothing from it.

I've tried a second shifter which seems to work fine.

Anything I can check on the E Tube app or is it just Kaput? (Anyone know of any LH R8070 for sale?)

Anyone know of any LH R8070 for sale?

I hear they're worth more per unit than bitcoin in Covid times...

Sounds like you have a damaged cable or short somewhere. Take some time and do a full test to isolate.

When I had this, I thought it was the battery or shifter, but it was a separate connection (inline Bluetooth module) that was loose. Often popped out when turning the bars further than usual to put in a car etc.

I managed to disconnect cables inside my frame by catching one where it came out of the chainstay. The irritating thing about it was it disconnected the cable from the bars to the internal junction box not the one connecting it to the rear mech that I pulled.

Clumsy removal of a wheel leads to an hour of dicking around taking the bike apart and reassembling it.

wrong continent but https://www.ebay.com/itm/Shimano-Ultegra-Di2-ST-R8070-front-left-Shift-Levers-w-Hydro-Caliper/154372326633?hash=item23f14ec4e9%3Ag%3A5NAAAOSwYW5gQ%7EqE&LH_Auction=1

I've tried a spare shifter which works fine, isolating down to the shifter, just seems a bit odd.

Gunk in the connector?

Tried both ports, still dead.

Tried it on someone else's DI2 bike?