First of all check the mounting place alternatives on your bike. The lower center of gravity is a big advantage. To check if a certain battery fits in the frame check the battery dimensions on the manual.
Battery cells brand, depreciation, and production date is a big deal. There is a calendar life on Li-Ion batteries; you don’t want to surprise yourself with a dead battery which costs 50% of the value after a year or so. Li-Ion battery packs can be ...