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Morningstar Charge Controller 20А SS20L-12V

(35 ratings)

SpecificationCompareSee all
Battery compatibilityLead acid
Controller typePWM Charge Controllers
Maximum charging current20 A
Attachments
Morningstar Charge Controller 20А SS20L-12V

Customer reviews & Questions

Verified buyer reviews

Reviews (35)
Questions (2)

revelation86

10/14/2021

Morningstar TriStar TS-45 45A PWM Charge Controller

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.

Pearl T.

10/01/2021

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

Had it for almost 2 months now, no issues. If you want to work with professionals, A1Solar won’t dissapoint

Liko9

10/01/2021

Morningstar TriStar TS-45 45A PWM Charge Controller

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!

Alec

09/23/2021

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

I want to thank the staff for patiently answering all my questions, it saved me a lot of time!

Potter

09/23/2021

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

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

Jumbo

09/16/2021

Morningstar TriStar TS-45 45A PWM Charge Controller

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.

ritter

09/08/2021

Morningstar TriStar TS-45 45A PWM Charge Controller

Honestly guys, y’all need a controller for the battery. don’t repeat my mistakes. controllers are important. peace

Corey Melendez

09/08/2021

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

It’s a piece of engineering art. Besides, Morningstar is known for their great tech support, so should anything happen they will promptly respond and take measures. A1Solar has also been a great partner so far

Austin Sites

08/30/2021

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

A very solid device packed with features for tracking performance. I had a few display freezes in the beginning, but after a firmware update I’m 100% satisfied with the device

Mason Phillips

08/18/2021

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

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.

Cory Camallieri

08/17/2021

Morningstar Charge Controller 20А SS20L-12V

Very easy to install + flawless performance. there’s no digital read-out, but I don't have time to stare at it anyway. I use a multimeter to check it every now and then and it is ideal every single time

Rebecca Whitney

08/17/2021

MORNINGSTAR Charge Controller MPPT 60A Battery TS-MPPT-60

Fast shipment. Works great and I am washing clothes with solar energy right at this moment. Thank you, A1

Fernando

08/13/2021

MORNINGSTAR Charge Controller 45А TS-MPPT-45

Surely the best MPPT on the market for medium to large size systems.

Fritz

08/11/2021

MORNINGSTAR Charge Controller 45А TS-MPPT-45

Works well on our motorhome. Receives energy from 3 335 watt panels. Charges our batteries in a blink!!

Rick Nelson

08/09/2021

Morningstar 10A-12V Charge Controller SS10L-12V

I’ve been using a bunch of these SunSavers for about ten years. So far no issues, the units are very well made

Jean Cameron

08/02/2021

Morningstar 10A-12V Charge Controller SS10L-12V

I ordered one of those cheap Chinese controllers a few months back. Wanted to save a few bucks. That was a mistake. What they sent me looked like a piece of junk. The instructions were missing. To get a better CC I did a little research and came upon the A1 SolarStore. The delivery time and service were excellent!

Dominik Gryz

07/30/2021

MORNINGSTAR Charge Controller 45А TS-MPPT-45

Almost doubled the output from our modules. Now the system performs better in low light situations. Grateful to the store for great service and fast delivery

Renate Hernandez

07/27/2021

MORNINGSTAR Charge Controller MPPT 60A Battery TS-MPPT-60

One of the best MPPT controllers on the market! For me, the best part is the manufacturer. It is a reputable company dedicated to solar instead of a huge corporation that makes all kinds of stuff.

Nick

07/27/2021

Morningstar Charge Controllers ProStar PS-30M Gen3 PWM

I think this one will outlive the boat. The little 20a was still working fine after 14 years, just upgrading my system. I will keep the 20 as a spare.

Jason

07/24/2021

Morningstar Charge Controllers ProStar PS-15 Gen3 PWM

Morningstar is unbeatable in quality and speed of installation! PS 15 is exactly what I needed for my solar fridge! My order was handled professionally and the delivery was fast

Scott

07/23/2021

Morningstar Charge Controller 20А SS20L-12V

I purchased 4 inexpensive solar charge controllers in the past. None of them lasted beyond five or six months. I decided to spend more hoping for a longer lifespan, and I am very happy I did!

John

07/10/2021

MORNINGSTAR Charge Controller MPPT 60A Battery TS-MPPT-60

The installation went without a hitch. The previous one burned up due to rats shorting it out. But it worked flawlessly for the past 7 years. Very satisfied with this controller and with the store

Sue

07/05/2021

Morningstar 10A-12V Charge Controller SS10L-12V

My garden is too far away from the house and there is no electricity. I wanted to construct an electric fence and install the pump to bring the water in. So I decided to make my own little solar farm. This charger was perfect for my use.

David

06/18/2021

Morningstar Charge Controllers ProStar PS-30 Gen3 PWM

Very satisfied with the ProStar 30 Controller. Simple set up and design, well built to survive life on a boat. Just need to upgrade my solar panels. Can recommend this device to fellow sailors. The interaction with the shop’s team was very smooth

Eric

06/14/2021

Morningstar Charge Controllers ProStar PS-15M Gen3 PWM

I ordered this unit for my trailer to charge 3 deep cycle batteries. So far no complaints, works as a charm. Mine is the model with a display, it shows the actual system voltage. I can see it from across the room in the dark. That's a very nice feature, so I recommend the ones with a display

Sean

06/11/2021

Morningstar Charge Controllers ProStar PS-15 Gen3 PWM

The Prostar 15 is a no-nonsense charge controller for good money. I have been using mine for a few days with a 100w solar array. I installed it in a matter of minutes on my boat. It gives off no noise or interference (I mounted it a couple feet away from my radios). There are many other chargers out there, but for the intended application, the Prostar is a solid choice at a great price.

James

06/10/2021

Morningstar Charge Controller 20А SS20L-12V

I got the Morningstar SunSaver because I wanted a controller that had a more industrial design and was easy to read at a glance. The other controllers I have seen seemed inadequate or low-quality.

Barbara

05/21/2021

Morningstar Charge Controllers ProStar PS-15M Gen3 PWM

I’m very pleased with the performance, it is a great controller. The hookup couldn’t be easier. The LCD displays correct values for Solar Current, Battery Voltage, and Load Current. Handles all types of batteries. Charging modes include Boost, PWM Regulation, Equalize, and Float. Highly recommend the store and the product

Victor

05/15/2021

Morningstar Charge Controllers ProStar PS-30M Gen3 PWM

I have been using the same controller the past seven months for solar landscape lighting. Very reliable, I’ve had zero trouble. I have negative experiences with cheaper devices, so for me this model is well worth the money

Otter

04/18/2021

Morningstar Charge Controllers ProStar PS-15M Gen3 PWM

I've never had any trouble with prostar chargers. I bought this controller for my RV, keeps the batteries in excellent shape. Definitely recommend the brand and this store

Kevin

04/11/2021

Morningstar Charge Controllers ProStar PS-30M Gen3 PWM

My first purchase was a charge controller for a little over 50 bucks. It was money wasted. If you're just starting out with a basic PV system, I definitely advise spending the extra dollars to get a controller like this one. The display makes it easy to detect any problems. Great product and amazing service!

Alden

04/01/2021

Morningstar Charge Controllers ProStar PS-30 Gen3 PWM

Works awesome! I had been using the Prostar 15 for years at a solar powered radio site. Not a single flaw in all these years. There was a need for upgrade, so ProStar 30 was my obvious choice. For those who wanna use this controller for a 2 way radio, rest assured it does not generate any interference

Cory Camallieri

08/17/2021

Scott

07/23/2021

I purchased 4 inexpensive solar charge controllers in the past. None of them lasted beyond five or six months. I decided to spend more hoping for a longer lifespan, and I am very happy I did!

James

06/10/2021

I got the Morningstar SunSaver because I wanted a controller that had a more industrial design and was easy to read at a glance. The other controllers I have seen seemed inadequate or low-quality.

Jeff

06/27/2019

Correction the max input voltage is 32.7v is this controller rated for this? Jeff.

A1 SolarStore

I would not recommend using this controller with your setup.

Jeff Nettleton

06/27/2019

I am getting 2 300w Canadian Solar panels the voltage on each is max 32v. I will be charging 2 batteries each one with a controller because I have a 12-120 v inverter. Is this charge controller rated for 32v input?

A1 SolarStore

Its rated for Max. solar voltage 30 volts.

Specification

Battery compatibility	Lead acid
Controller type	PWM Charge Controllers
Maximum charging current	20 A
Dimensions LxWxH	1.75 x 2.5 x 7 in
Manufacturer	Morningstar Corp
Manufacturer Part #	SS20L-12V
Operating Temperatures	–40 °C to +60 °C
Warranty	5-YEAR WARRANTY
Special Features	Sealed / Flooded battery Select

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About product

Morningstar’s SunSaver is the world’s leading small solar controller for both professional and consumer applications including standard features and capabilities not found in any other small PV controller.

SunSaver’s technology provides:

Exceptional Reliability
PWM Battery Charging
Consistent High Quality

Features

100% solid state
Series design (not shunt)
True 0 to 100% PWM duty cycle
Setpoint accuracy to 35 mV
Rated for 25% overloads
Fully encapsulated in epoxy potting
Marine rated terminals / anodized case
Temperature compensation
Sealed / Flooded battery select
No need to derate
Parallel for 40 amps or more
Green charging / red LVD indicators
Approved for use in hazardous locations - Class 1, Division 2, Groups A, B, C, D
ISO 9002 quality programs

String Calculator

The Morningstar String Calculator will help you decide how many PV modules you may use in series and parallel with a Morningstar charge controller.

Morningstar, SunSaver Charge Controller, 20A, 12VDC, with Low Voltage Disconnect, SS20L-12V

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