Obviously using different brand batteries will supply you with different values. Do NOT mix different batteries, or use damaged batteries.

In this specific build, I used EVE 2,000mAh 18650 cells, the specs are listed below. The entire pack requires a total of 21 cells.

Pack specs:

Nominal voltage: 11.1V
Minimum voltage: 9.3V
Maximum voltage: 12.6V
14Ah / 155.4W