Morningstar - SS-MPPT-15L, SunSaver MPPT 15 Amp RegulatorMorningstar SS MPPT 15L, SunSaver MPPT 15 Amp Regulator SKU: SS MPPT 15L An economical Maximum Power Point Tracker (MPPT) charge controller for small PV systems. Rated at 15 amps of charge current, this dual voltage controller (12 24VDC)is perfect for PV systems up to 100W (12V) or 400W (24V). Features include: 12 24V in one model high effciency (up to 99%) and low power consumption higher solar yield (up to 30% more) with MPPT accepts up to 75VDC