Brushless Speed Controller Weight: 22.1 grams / 0.78 oz. Size: 45 x 25 x 15 mm / 1.8x1.0x0.6 in. Constant Current: 18A Max Current: 25A (10 seconds) FET: 12, BEC: Yes, 1.5A TIMING: Auto, PWM: 8K Input: 2/3 Li-Poly Low-Voltage Cutoff: 2 cell Li-Poly 5V, 3 cell Li-Poly 7.5V