[scarletboa]

i have the 90-100a version and there is no way to change to cutoff voltage. when i used mine, i just carried my battery checker thing and checked it every 2-3 minutes after the first 15 minutes of running. the thing i dislike most about the hobbyking escs is the soft startup. it starts slow for about a second, and THEN kicks into high gear. also, the first trigger pulls will be extra sensitive as the esc calibrates itself to the radio automatically. so, the first few jabs of throttle will be very harsh and uncontrollable (i did these off the ground to simplify this) and after that, you still have to deal with the soft start, but other than that, no complaints. that esc is tough as nails. i abused the crap out of it and i could only heat it to 150F tops with no fan and it lasted until i physically damaged it in my rustler. (note to self, never leave an esc or battery unsecured in any rc car.)