Prostar MPPT™ solar charge controller is an advanced maximum power point tracking (MPPT) battery charger for off-grid photovoltaic (PV) systems up to 700 watts. All versions include load control and TrakStar™ Technology to maximize PV efficiency and energy harvest.


The ProStar design has been proven in over two decades of use in the world’s most demanding installations—and ProStar today reflects Morningstar’s policy of continuous improvement through regular upgrades and enhancements. Because Morningstar’s employee-owned culture never “rests on success,” ProStar customers can own both a legend and the latest in a single product.


“Best of the best. Have used and seen many others. This is the most durable…”


Two Models Available:

- No Meter Display (PS-MPPT-25)

- With LCD Meter Display (PS-MPPT-25M)*

*inquire regarding availability



  • Peak efficiency up to 98%

  • Input voltage up to 120 Volts

  • Up to 25A output @ 10 to 35 Volts

  • Compatible with a range of battery voltages: 12 to 24 Volts

  • Compatible with Lithium, Lead Acid, and Nickel Cadmium batteries

  • 4-stage charging: Bulk, Absorption, Float, Equalize

  • Rugged construction with conformally coated circuit board and corrosion resistant terminals

  • Multiple communication protocols for easy programming, control, remote data access (MODBUS, MeterBus, SNMP)

  • Built-in 256 days of data logging

  • Certified to UL1741, CSA C22.2 No. 107.1

  • Standard 5-year warranty


Weight: 1.4 kg (3.1 lbs)

Dimensions: 200 x 170 x 70 mm (7.9 x 7.6 x 2.8 in)



Morningstar 25A ProStar MPPT Charge Controller, PS-MPPT-25