We can produce various speed controllers including, 3A ESC, 6A ESC, 10A ESC, 20A ESC, ... a 3 cells lithium pack, when “Medium” cutoff threshold is set, the cut-off voltage will be: 2.85*3=8 ... .44*6=8.64V, when “Medium” cut-off threshold is set, the cut-off voltage will be:8.64*50%=4 ... than 6 poles to get a high efficiency. For higher speed, High timing value can be chosen. 20A 30A or 40A ...