The most sophisticated Maximum Power Point Tracking (MPPT) technology is used by Renogy Rover series solar charge controllers to follow the maximum power voltage point of solar panels as it varies with temperature and sunlight exposure. This technique greatly exceeds conventional PWM solar controllers and guarantees your solar system's maximum efficiency. The broad solar input voltage range of MPPT technology is an additional advantage. Standard off-grid 12 or 24 volt solar panels, as well as high voltage or multiple panels with a voltage of up to 100 volts, can be operated by this controller.