The next generation of extreme brushless horsepower is here, Ready-To-Race® from Traxxas-and now waterproof! VelineonT is the ultimate brushless system delivering the tire melting horsepower, supercharged speeds, and ease of use that you expect from Traxxas. Just plug it in and it works. The key to the Velineon’s extreme power output is total system optimization. Each component, from the Traxxas high-current battery connector, to the powerful Velineon 3500 brushless motor, is carefully engineered to work with other system components to eliminate restriction and allow maximum power flow. High-frequency transistors and advanced circuit design delivers incredibly smooth and refined throttle control. The Velineon system accepts the widest range of battery types, including 3-cell Lithium Polymer packs (3S LiPo packs). Built-in low-voltage detection in the VXL-3s electronic speed control helps keep LiPo battery packs in top condition. Traxxas’ exclusive waterproof technology allows the Velineon system to operate in wet conditions, including mud and snow, with no special precautions required. You decide where the Velineon powered adventure leads-the only limits are your imagination. Compatible with brushed, brushless and sensored brushless motors. Auto-detects the motor type. Accepts NiCad, NiMH (4-10 cells), and LiPo (2-3cells) battery packs. Built-in-two-stage low-voltage detection for LiPo battery packs. 3 drive profiles:Sport Mode, Race Mode, and Training Mode. Two-Stage Thermal shutdown protection. Velineon 3500 Brushless Motor. Optimized for extreme power and efficiency in 1/10 vehicles.