This will limit the maximum current the ESC allows between battery and motor - this is always during heavy acceleration and this is where the impact will be noticed. If you have a car with and older or weaker drivetrain designed for brushed motors then you will definitely want to set this to "soft". But the most important setting available I believe is starting power (also called punch). gravel vs tarmac or carpet where the high grip surfaces allow you to have more braking power available without losing traction. Maximum brake force could be changed if you switch the same car between high and low grip surfaces e.g. Low voltage cutoff, maximum reverse force and neutral range will likely never need to be adjusted again once set as there are clear 'best' settings here. Note: although it is in the same line, the 'working state' field says that the program card is working and is not a parameter of Neutral range. Most 2.4ghz transmitters are very accurate so you can turn this down to 6% if you wish. I like to tune this to the transmitter for control. Another way the think of this is how far you have to squeeze the trigger before the car starts moving. This is the 'dead zone' before the ESC registers a command. 100% is means that if you use maxium reverse on you transmitter, you car will go as fast backwards as it is able to go forwards! I turn this down to 25% because you only need as much power to get yourself out or away from an obstacle. This is the maximum reverse power available. Increase for more breaking strength on a grippy surface or decrease when you loose traction/control on a slippery surface. This is the peak braking power your ESC can provide. Medium is fairly self explanatory and was the default setting on my setup. Adjusting this to soft will really protect you car if it was not designed for brushless power.
Soft will ease this acceleration but put a lot less stress on you battery and drivetrain. Strong will pull more current, stress your drivetrain more but you will have some pretty violent acceleration. Soft, medium or strong reflect the 'punch' you will get off the line - technically the peak current the ESC will allow to pass through to the motor.
This the minimum I'd want to run it at (the maximum allowable with these ESCs) What this means is when you lipo battery gets down to an average of 3.1v per cell, the esc will go into limp mode to protect the battery. Going lower will damage your lipo battery if you rely on the low voltage cutoff. If you are running Lithium Polymer Batteries (Lipo) then you will want to set this to 3.1v. There are 5 sets of parameters that can be adjusted using the programming card and Ill run through those now:
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