Your cart is empty.
Your cart is empty.Product Description
SolarSSheng 40A Solar Charge Controller with LCD Display
- 12V/24V Auto
- Solar panel: suitable for 480W (12V); 960W (24V);
- Maximum input voltage: 100Vdc PV
- Rated Solar Charge Current: 40A
- Supported rechargeable battery types: sealed battery (default) / opened battery / gel battery / lithium battery, etc
MPPT Range Operating Voltage:
- 12V: 18VDC-100VDC
- 24V: 36VDC-100VDC
- Intelligent LCD Display with Multiple Function
- True Over Temperature Protection
- New and Original Electronic Components
- Internal Circuit Lines are Based on Plug-Pull Blocks, not Welding
Package Included:
- 1 x MPPT Solar Charge Controller
- 1 x User Manual
- 1 x Position Paper Card
- 1 x Screw Bag
LCD Display
Easy operation, details data display in real-time
Intelligent Cooling Fan
Inbuilt real-time temperature monitor, <42℃ low speed fan, >45℃ high speed fan, protect controller overheat
USB Output
There are two USB outputs
Wiring
For safety during installation, connect the batteries first, then the solar panel, and finally the load. Please confirm that the positive and negative poles of each wire are not reversed. When wiring, follow the sequence of connecting the "+" pole first, then the "-" pole
Special note: Please do not connect the PV and battery terminals in reverse!!!
Attention:
- Always connect battery first !! Make sure enough batteries’ voltage let controller recognize the right system voltage. NEVER connect the solar panel array to the controller without a battery. The disassembly sequence is contrary to the wiring order. Special note: Please do not connect the PV and battery terminals in reverse!!!
- DO NOT connect any Inverter/ wind/ Alternator or Charger into the charge controller !! Please connect the Inverter directly to the battery.
- Ensure solar input voltage higher 3V or more than batteries’ voltage and total input power in the range. If input power is too low for max input power, it may be appears to have been discontinued, the charging current almost be zero when controller is floating charge.
- The charging indicator is on and off, and the charging current is off and on. This situation generally occurs on cloudy days or in the evening when the light is insufficient, which is a normal phenomenon.
- When the controller is buzzing, it is because the fan is trying to dissipate heat. Please wait patiently.
- Avoid installing the controller in areas of direct sunlight, high temperatures, and where water can easily enter. Remove all clutter around the controller to reduce interference and make sure there is enough space for heat dissipation. ( leaving a space of approx. 20cm )
- Ensure all connections going into and from the controller are tight. DO NOT let the positive (+) and negative (-) terminals of the battery touch each other.
zypher
Reviewed in the United States on May 22, 2025
Ordered this to use as a charge controller in my small office/lab solar setup. It does work for that purpose.First off, I really love that there's a "Load" output. This allows me to control whether I want power pumped out to a device connected via the controller. Unfortunately, there's also pretty strict limits on what they recommend you run through the load terminals, so for any significant load you still need to run directly from your battery. Overall though, this is still a nice touch and I consider it a pro regardless.Where this controller is really lacking is in build quality. The buttons are just SO spongey. Possibly the worst I've felt on an MPPT. It can even be hard to tell if you've depressed it enough to register sometimes.Second con, it doesn't actually have a dedicated LiFePO4 charging mode. So if you are building a new solar setup and using lithium iron batteries (and why wouldn't you) then this is probably not the best fit for you. There are cheaper options with the same capacity but more modern features for less money. I'd recommend shopping around instead.
Gary Davis
Reviewed in the United States on May 17, 2025
It is true mppt. It's a bit big for a 40 amp unit. Has two quite fans seemingly controlled by temperature. Display is informative but an LCD display without back light is hard to read depending on how it's mounted. Only basic control inputs and outputs are available. Digits are in tenths so voltage limits aren't as accurate. Unit runs cool at full 40 ampere output. So it's not perfect but then it's just a basic controller. I'm good with it. For the money it's a steal. I'm running in series at 80 volts to 12 volts with no hiccups.
Super Toaster
Reviewed in the United States on March 18, 2025
Using with 200w of panels and 100ah 12v lifepo4 battery. Working as well as any other charge controller at this price point. It seems to be more efficient than any of my PWM charge controllers. Not a bad option if the price makes sense. Will update if it dies.
basil_
Reviewed in the United States on February 5, 2025
Update 3/25/25: Sunny day today to finally try this out. First of all, great clear display. Display alternates between voltage and amperage (both panel and battery) every 5 seconds. Battery charge % visible all time. Controller took its time to get going. I thought the thing was dead because it was not showing any current. Likely it starts up in trickle charge mode. After 1 minute or so, it started charging. Then after battery capacity shows 100% on the controller display, it kept charging at 14.5V and a robust current. A little unnerving. I kept a close watch to be ready to pull the plug in case the battery voltage went further up. It never did. Eventually it fell back to trickle charge mode. By the way, the controller terminal voltage was spot on at all terminals. Frankly, I was pleasantly surprised, widely. It turned out be the best under-$100 controller I have tested I wish it also shows the charging watt. But I can do simple multiplication.I waited for more than a whole month, but wintery weather prevented from testing this controller in the field. So I opened it up to take a look.First thing that caught my eye was the conformal coating of the main board. At least there is some protection against moisture and condensation. They even slathered caulk on the wire harness joints, except they missed the wire leads altogether. It looks like they grabbed an off-the shelf controller board and a display board, threw in a transformer and other components, mounted them on a heat sink to go into a custom case. There is no manufacturer info other than the name SolarSheng which wasn't even printed on the carton.Some reviewers raised big alarm about the lack of floating voltage setting. I am not too concerned about that. I am willing to give it the benefit of the doubt that it will fall back to trickle charge after the bulk stage. It is to be expected of any charge controller.I got scary sparks at the battery terminal when I tried to connect a big battery. So the red varistor was not doing a good job. There is a relatively big 680 microF capacitor. The toroidal transformer does not strike me as high quality. The 2 40A fuses are soldered to the board, quite silly.It does say in the manual that the rated discharge current is at 20A. I have no idea why this unusual limitation.Solar controllers are all grossly overpriced. This probably is not worth $80. In terms of quality, I would say that it is no worse than other cheap controllers I have seen, not by a long shot. This controller has USB output, which is rare in bigger controllers.I expect the price will be marked down. At that point, it may be worth a flyer, especially if you need usb output.
Danny
Reviewed in the United States on February 11, 2025
I'm really happy with this charge controller! I've had some issues with my old one, but this one has been working great and keeping my batteries charged up nicely. The installation was a breeze and the price was very reasonable. I'd definitely recommend it to anyone looking for a reliable solar charger.
The Fat Rancher
Reviewed in the United States on February 1, 2025
This 40A controller will be used for a greenhouse power system. The Solarssheng "MPPT Solar Charge Controller 40A 12V/24V Auto Charger Controllers for Solar Panel" uses advanced logic to optimize solar panel utilization for maximum output and charging capability.The charge controller comes with a template and mounting screws. A large heat sink on the back has two small fans to help with cooling. An LCD panel and four pushbuttons control setup parameters.
BJ
Reviewed in the United States on January 18, 2025
On the bench today, I’ve got the SolarSSheng MPPT Solar Charge Controller 40A 12V/24V Auto Charger Controllers for Solar Panels, Parameter Adjustable LCD Display Regulator fit for Gel, Sealed, Flooded & Lithium Battery.After getting a chance to put this through some use, it really isn’t something I’d buy. It really doesn’t appear to me to be able to properly charge LiFePo4 batteries. The lithium setting, based on modes and voltages, appears to be for Lithium ion. Either way, there isn’t any way to set like a bulk charge voltage setting and then a lower voltage for it to fall back to float at.It seems to just charge to the set voltage and hold it there indefinitely which isn’t what you want for LiFePo4 batteries. Sure, it would be possible to make this work in a pinch by setting it to a lower voltage but I definitely wouldn’t be using it for LiFePo4 for any sort of long term or permanent installation.I think there are far better options at the price or for slightly more that actually operate properly for LiFePo4 batteries.
Mic
Reviewed in the United States on January 16, 2025
Nice looking MPPT with good controls on it. I'll be giving it a thorough test and will adjust review if needed.
Recommended Products