Venom brushless motor has auto cut-off and cell detection (detects type and number of cells) LiPo safe technology with 70% battery voltage auto cut-off Two throttle profiles, Hard Start/Hard Cut-Off and Soft Start/Soft Cut-Off Overheat protection shuts off power to motor if speed control temp exceeds 221F (105??C) Low speed control allows motor to run smoothly at very low speeds Auto fail safe cuts motor power if loss of signal for more than two seconds is detected 90 day limited warranty