Cells internally are well sandwiched "capacitors" with little inductance, most comes from the fact how external connections are placed; side by side, or from opposite ends? Then wiring between the cells, and finally the wiring exiting the pack to your circuit. Remember to use worst-case wiring if there is a possibility someone uses loose 5-meter cables all over the place instead of the 10cm nicely parallel stub you though everyone would use.
You get close by simply modelling the battery pack and wiring as a wire loop of the actual pack geometry, assuming the inductance between + and - terminal is just caused by the distance of the terminals. Once you have the geometrical drawing, you'll find inductance calculators online.