Votronic's MPP-series solar controllers utilise Maximum Power Point Tracking (MPPT) technology to maximise the power harvested from your solar panel.  The MPPT technology continuously and automatically calculates the maximum power yield of the solar modules several times per minute with any surplus voltage from the solar panel being transformed into a higher charging current for the battery. This ensures short charging times and the best possible efficiency of your solar system under any given daylight conditions. MPPT-based controllers perform particularly well in low light levels and in overcast conditions.

This controller is fully automatic, maintenance-free and can be used with any 12V lead-acid (flooded, sealed, AGM, gel etc.) or LiFePO4 lithium battery and any solar panel (or combination of solar panels) with an output up to 350W, 21A and 50V DC.

The MPP-series controllers feature a second output so that some of the solar power can be used to trickle-charge a starter battery with a current of 1A max.

Features

• High performance MPPT technology
• 4 selectable charging programs to suit different battery types 
• Twin outputs for trickle-charging a starter battery
• Protection against battery overcharging
• Overload protection
• Over-temperature protection
• Reverse-polarity protection
• Protection against current drain back through the solar panel at night
• Over-charge protection
• Optimised charging profile maintained, even when the leisure battery is under load
• Automatic compensation for voltage-drop in connection cables
• Mains suppression filter
• Connection for optional remote control panel
• Designed and manufactured in Germany
• 2 year manufacturer's warranty