This Mamba Monster is capable of 2S LiPo to a maximum of 6S LiPo with a waterproof design to give you peace of mind to enjoy your vehicles in muddy, snowy and wet conditions without worrying about damaging the electronics! Features an adjustable internal BEC with a peak of 8.0V, factory equipped and fully removable cooling fan, LED error codes for common error conditions, redesigned rotor and stator assemblies, reduced magnetic cogging, producing less residual drag brake, increased efficiency, resulting in lower temperatures and longer run times, smoother start-up, reducing cogging or stuttering when starting from a stop, high-performance 0.2mm steel lamination stacked stator oversized high quality NMB bearings! he Mamba Monster 2 includes a coupon for a free Castle Link USB device. This allows access to the full programming suite of adjustable settings that tune and tweak your vehicle to your preferences, resulting in an incredible RC driving experience. This combo includes the Mamba Monster 2 controller and the recently updated Castle 1515-2200kV V2 sensored motor (Sensored capabilities of the motor cannot be utilized with the Mamba Monster 2). Battery Connector required; Deans Ultra Plugs, Traxxas Power Connectors, E-Flite EC5, or 6.5mm Castle Connectors are recommended.