The only good place to install the battery is under the seat. Placing on rear rack leads to shimmying. Because I did not trust the included bracket to hold the battery upside down, I made a secondary support because most normal applications have the battery right side up. Would not be pretty if battery mount broke. I don't know offhand what the price point difference is, but the Bafang kit's wiring harness makes for a nice clean installation. One thing though, I could not figure how to make the brake cutoffs work with the hydraulic levers I have. I did make a kill switch using one of the wires, but now run the system without cutoffs.
In either case, you will probably have to slightly file the dropouts to get drive wheel in. You would be using the rear wheel with motor, not the front wheel. I don't know if anyone has ever tried to make both wheels driven on the T50. The Bafang offers the drive wheel in 27.5 inch size, whereas the EBS kit does not. This may have changed.
Before I put the second kit on, I waited to see how my chemo was working.
With my current setup swapping batteries is not practical. Carrying spare battery on back rack would probably still cause shimmying.
As mentioned before, it was not necessary to splice in more wire to make this work. Kit has cadence sensor and tapered spindle cranks must be used.
Good luck on your quest. David
