The Hobie EVOLVE Torqeedo Battery is a lightweight 915 Wh Lithium-Manganese battery that powers the featherweight Torqeedo motor. This spare battery is buoyant and completely waterproof, ensuring safety and performance. The built-in GPS unit generates pertinent information such as speed and range. Includes solar charge/run port. Not comatible with V1 Hobie EVOLVE Motor.