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Morningstar TriStar TS-45 45A PWM Charge Controller

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Battery Charging Voltages 12-48V
Battery compatibilityLead acid
Controller typePWM Charge Controllers
Maximum charging current45 A
Maximum voltage of the solar panels125V
Dimensions LxWxH10.3" x 5.0" x 2.8"
Weight3.5 lb
ManufacturerMorningstar Corp
Manufacturer Part #TriStarTS-45
Operating Temperatures –40 °C to +60 °C
Delivery Time 5-7 business days

About product

Morningstar’s TriStar PWM controller provides safe battery charging, load control and diversion regulation in your system. One unit operates in one of these three modes at a time, but several regulators can do all of them at once. 

TS-45 has 45A current rating at 12-48 volts. It is fully adjustable with 7 different digital presets. The controller is quiet, simple to use and meets all necessary safety standards. You can connect it to your personal computer for remote control, custom settings and data logs.   


  • Rated solar, load or diversion current: 45A
  • System Voltage: 12-48V
  • Maximum solar voltage (Voc): 125V
  • Dimensions: 10.3 x 5.0 x 2.8 in
  • Weight: 3.5 lb
  • Warranty: 5 years

Reviews & Questions

  • Reviews (4)
  • Questions (3)
I actually bought two of those: one is a charger and one is a load control. Not that expensive actually! These controllers are so simple, I barely looked at the manual.
10/14/2021 07:21 pm
Thank you guys! I had my doubts, but the staff from a1solar explained to me how to size a controller for the system and this is what i ended up choosing. and yeah, it fits my solar like a glove!
10/01/2021 11:40 am
The controller is absolutely fine. It is a good price and it does well. at least my battery doesn’t get overcharged like it used to, so i hope this one will last longer than my last.
09/16/2021 10:19 am
Honestly guys, y’all need a controller for the battery. don’t repeat my mistakes. controllers are important. peace
09/08/2021 05:49 pm

Leave a review

Does it work with gel batteries?
10/13/2021, 09:24
Yes, it should.
I see the maximum voltage, but does it have minimum voltage to operate?
09/23/2021, 10:03
The minimum voltage is 9V
hi, what kind of cable fits there?
09/11/2021, 09:51
Good day. The largest wire that will do is 35 mm2 or 2 AWG.