i put a 42t on the front but even with that, however I set up the derailleur I can't get the bike to stay in a gear, it just jumps up and down out of gears
I'm wondering if they changed the geometry slightly. I dont see how i can fit the battery in without a shock like the one in your pics. Mine is the other way around and the pins are different, a lug and the valve are in the way of the battery.