| After-sales Service: | 3years |
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| Warranty: | 3years |
| Condition: | New |
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Shipping Cost:
Estimated freight per unit. |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier The Solarthon MPPT Solar Charge and Discharge Controller, offered by Guangdong Solarthon Technology Co., Ltd., is designed to optimize the performance of your solar panel system.
MPPT stands for maximum power point tracking, an advanced charging method that continuously monitors the power generation voltage of your solar panel in real time. By tracking the highest voltage and current values, this controller ensures that your battery is charged with the maximum power output.
Unlike other controllers, the maximum power point tracking mode of this series is completely automatic and does not require any user adjustments. It intelligently adapts to the changing environmental conditions, allowing it to track the maximum power point of your solar panel and extract the maximum energy from your solar array.
With the Solarthon MPPT Solar Charge and Discharge Controller, you can enjoy the benefits of efficient and optimized solar power utilization without the hassle of manual adjustments. Maximize your energy extraction and make the most of your solar panel system with this advanced controller.
| Model | STB1220 | STB1240 | STB1260 |
| Maximum Charging Current | 20A | 40A | 60A |
| System Voltage | 12/24V automatic identification | 12/24V automatic identification | LiFePO4 12.8V 120AH |
| MPPT Charging Voltage | <14.5/29V | <14.5/29V | 12V/24V <10mA, 48v<12mA |
| Maximum Battery Voltage | 35V | 35V | 35V |
| Overcharge protection voltage | 10.0~32.0V(lithium battery, default 14.4V) | ||
| Battery Type | gel, AGM, lead-acid, lithium (default gel battery) | ||
| Maximum PV Voltage | 100V(-20ºC), 90V(25ºC) | ||
| Maximum input power | 260W/520W | 520W/1040W | 750W/1500W |
| MPPT Tracking Range | battery voltage+1.0V)~Voc*0.9 *² | ||
| Output Current | 20A | 30A | 30A |
| Operating Mode | universal controller (default), street light mode, user manual mode | ||
| Maximum MPPT Tracking Efficiency | >99.9% | >99.9% | >99.9% |
| Maximum Charging Conversion Efficiency | 98.0% | 98.0% | 98.0% |
| Dimensions | 136.6*136.6*67.1mm | 196.5*136.6*97.1mm | 262.5*186.5*97.5mm |
| Self Power Consumption | ≤12mA | ≤12mA | ≤12mA |
| Communication | RS485(RJ11 port) | RS485(RJ11 port) | RS485(RJ11 port) |
| Operating Ambient Temperature | -20~+55ºC | -20~+55ºC | -20~+55ºC |
| Storage Temperature | -25~+55ºC | -25~+55ºC | -25~+55ºC |
| IP Rating | IP32 | IP32 | IP32 |
Are your inverters pure sine wave output?
Q: Yes, all are true pure sine wave.
What kind of output can you do?
A: Normally we produce inverters with 110V, 115V, 120V, 220V, 230V, and 240V, 50/60Hz self-adaption. If you have special requirements, please tell us for engineer consulting.
What's the difference between low frequency and high frequency inverters?
A: Low frequency inverters have various protections, strong ability to adapt to the environment, and are more reliable with voltage regulation.
What's the difference between pure sine wave inverter and modified sine wave inverter?
A: Pure sine wave output inverters are just as good as the public power grid, even better. They have a low repair rate, long lifespan, no harmonic pollution, are environmentally friendly, and protect appliances. On the other hand, modified sine wave output has a negative impact on appliances and can't load inductive loads such as air conditioners and refrigerators. Certain motor control circuits don't like the modified wave.
What appliances can your inverters load?
A: Our inverters can be used in households, offices, agricultural appliances, and other inductive loads such as refrigerators, air conditioners, water pumps, etc.
Can you print our company logo on inverters, nameplates, and packaging?
A: Yes, we accept OEM orders.
How to choose the right inverter?
A: Tell us your demand, and our sales will recommend a suitable inverter to you.
How to solve technical problems?
A: We provide 24-hour after-service consultancy to easily help you solve any technical problems.
Do I need a power inverter?
A: Actually, no. This is the only component of a solar energy system that is not absolutely required. However, if you don't use one, you will not have 220 or 230 volts AC and will have to use battery power alone. This might be acceptable in a small RV or cabin, but most people want to use normal AC appliances.
What's the difference between 12, 24, and 48 volt inverters?
A: This refers to the input voltage from the battery bank. The main consideration is that at higher voltages, the current is less so that you can use smaller wires between your solar panel array and your battery bank. Of course, when you decide on a system voltage, the Solar Panels, Inverter, and Battery Bank all need to use the same voltage.
What to do if the product is broken?
A: If any product is faulty, you can send the picture or video to us, and we will study it and provide the spare parts of PCB board for free as part of our after-sale service.
Click here for more information. Thank you!
Suppliers with verified business licenses
Audited Supplier 
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