[Closed] Cheap electronic shifting on the way?

Will the Di2 rear derailleur work on the range 10t to 42t on my cassette?

Also if I go away for weeks, is there a way to recharge with a phone USB charger or do I need to carry a charging dock (which would be disadvantage) for me.

Saw a guy with a full 1x11 xtr Di2 setup last week and it was fantastic.

C

Looks great, the battery life and price needs to improve and it'll be a hit.

I switched from DA mechanical to sram etap- has not made me faster but my word it shifts well

I still hold that having to make sure everything is charged before a ride would be buttload of hassle. Spur of the moment ride, damn, forgot to charge (and I am very likely to forget).

Di2 charges enough for a ride in the time it takes you to take a piss. That assumes you've let it go flat, which you have to be a complete muppet for. Again, if you don't want it, that's fine. But you're still talking rubbish.