The EcoPulse is a pulse width modulation (PWM) solar charge controller within Morningstar’s Essential SeriesTM of products which provides essential off-grid battery regulation functions. This controller is easy to use, and designed for residential and leisure consumer applications.* Metered and non-metered versions of this product are available at 10, 20, and 30 amp charge ratings for 12 and 24 volt battery systems.