This PMA is very versatile and is a middle of the road type winding. Features 2 power curves by changing wiring between series and parallel. Works well in medium wind zones for 24 volt and low wind zone 12 v applications for low wind cut-in . Reaches 12 volt at around 80 RPM wired in series or 160 in parallel of with the single PMA. A nice compromise between low wind start up and charging amps