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Morningstar Charge Controller ProStar PS-MPPT-40M 40A MPPT

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Battery compatibilityLithium-ion, Lead acid
Controller typeMPPT Charge Controllers
Maximum charging current40 A
Maximum voltage of the solar panels120 V
Dimensions LxWxH6.69 x 7.87 x 2.75 in
Weight3.3 lbs
ManufacturerMorningstar Corp
Manufacturer Part #PS-MPPT-40M
Operating Temperatures –40 °C to +60 °C
Warranty5 Yr Warranty
Delivery Time 5-7 business days

About product

Morningstar, ProStar MPPT Charge Controller, 40A, 120Voc, 12/24VDC

Morningstar's newest ProStar MPPT is a mid-range charge controller that features patented TrakStar Technology. It is capable of limiting the output current under high power conditions, even when the input power is several times higher than the Nominal Maximum Operating Power. Off-grid application is possible for PV systems up to 1,100 W. The unit was designed for both industrial and residential customers. Advanced programming options and 190 days of data logging will help you maximize your solar harvest.

Key features

  • MODBUS communications protocol: easy control, remote access and charge synchronization with up to 190 days of detailed data
  • Custom programming: connect to a computer to adjust charging, load, lighting, etc.
  • The Remote Temperature Sensor for automatic charge adjustments
  • Self-diagnostics with continuous monitoring and reporting
  • Charges all battery types: Lead Acid, Lithium, NiCD
  • Wire terminals accept wire up to #2 AWG
  • 5 year warranty period

Functionality and cost-efficiency

  • Durability: protective terminal cover, aluminum heatsink, strong polycarbonate case, coated circuit board and corrosion resistant terminals
  • Networking and communication: supports MSView software, MeterBus and MODBUS protocols
  • Reliability: CE, RoHS, UL1741/CSA.107.1, IEC 62109, FCC Part-15 class B compliance and multi-stage quality control
  • Maximizes energy harvest with TrakStar MPPT Technology
  • Longer battery life with 4-stage charging

Reviews & Questions

  • Reviews (3)
  • Questions (3)
Had it for almost 2 months now, no issues. If you want to work with professionals, A1Solar won’t dissapoint
Pearl T.
10/01/2021 12:21 pm
I’d give it the highest score overall, but it took me a while to get used to the menu and display. There were a bit too many options for me, so be ready to keep the manual close at hand
09/23/2021 05:10 am
I bought it for a 900W PV system and it turned out to be a great match. I can recommend the device for arrays of similar size.
Mason Phillips
08/18/2021 03:09 pm

Leave a review

Why does it have two battery terminals?
Z. Lewis
10/02/2021, 10:14
One set is for the battery and the other for battery sensors.
Will this Morningstar controller interfere with my radio equipment?
09/21/2021, 10:23
This model has a Low Noise Design and is an FCC Class B device.
Does it support custom lighting settings?
Viron Jr.
08/17/2021, 09:12
Yes, you can choose between dusk-dawn or custom settings.