Hi all new to this site and looking to convert my MTB into a mid drive ebike. The problem I have is that there is not enough room within the frame for the battery, therefore looking to fit a rear pannier rack. That’s the second problem there are no fittings for the rack, can anyone recommend a rack that fits onto the seat post via a quick release clamp. I am looking to do gravel path/ canal path/ Forrest path riding . Have seen some batteries which fit onto rear racks are they any good and would their panniers work? Any help greatly appreciated, thanks Ricky