That battery is made up with Panasonic PF cells, 2900mah per cell and a proper 10a rated cells there are several very good cells around and they are one the dogs do dahs when it comes to cells. The capacity rating though under independent testing is nearer 2700mah and 5a continuous to get the best use out of them, so a 20- 25a max discharge is a happier place for them to be in. At 10a you won't get near the rated capacity and is the case for all cells.
The battery is 48v 13s4p ( 52 cells), 4 cells in parallel x 13 in series & capacity is 11.6ah/557wh.
Possible battery rating of 40a max discharge if the nickel strips are up to it, though ultimately the discharge is whatever the BMS allows.
A battery like that would give me about 61 miles range.
I use Panasonic PF's and have 4 battery packs made up with them.
There are harder hitting cells out there with more amps & capacity but for the money these are one's you can't beat in the 2900mah range.
With batteries you can't have your cake and eat it, with these size batteries you can't have both the max capacity and the max amperage out of them it is a compromise so you have sacrifice one or the other. That said for most of us who use controllers of less then 25a can invariably get good range from a battery by using low power assist levels, so PAS 1 or 2 or Eco on other bikes and save high assist level temporarily just to boost for inclines.