| 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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Audited Supplier The Solarthon MPPT Solar Charge And Discharge Controller, developed by Guangdong Solarthon Technology Co., Ltd., is designed to optimize the charging process of solar panels. With its advanced maximum power point tracking (MPPT) technology, this controller can monitor the power generation voltage of the solar panel in real time. By tracking the highest voltage and current values, it ensures that the battery is charged with the maximum power output.
This controller's MPPT mode is completely automatic, eliminating the need for user adjustment. As the maximum power point of the solar panel changes with environmental conditions, the controller continuously tracks and adjusts to ensure maximum energy extraction from the solar array.
Key Features:
Choose from three different amperage options: 20A, 40A, or 60A, depending on your power requirements. With the Solarthon MPPT Solar Charge And Discharge Controller, you can confidently harness the maximum power output from your solar panels and optimize your energy generation.
| 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 |
Q: Are your inverters pure sine wave output?
A: Yes, all our inverters provide true pure sine wave output.
Q: What kind of output can you provide?
A: Normally, we produce inverters with 110V, 115V, 120V, 220V, 230V, and 240V, 50/60Hz self-adaption. If you have special requirements, please let us know for engineer consultation.
Q: What's the difference between low frequency and high frequency inverters?
A: Low frequency inverters have various protections and a strong ability to adapt to the environment. They are more reliable and have voltage regulation capabilities.
Q: What's the difference between pure sine wave inverters and modified sine wave inverters?
A: Pure sine wave output inverters provide power just as good as the public power grid, if not better. They have a low repair rate, long lifespan, no harmonic pollution, and are environmentally friendly. Modified sine wave output, on the other hand, may negatively impact appliances and cannot load inductive loads such as air conditioners and refrigerators. Certain motor control circuits do not work well with the modified wave.
Q: What appliances can your inverters load?
A: Our inverters can be used with household, office, agricultural appliances, and other inductive loads such as refrigerators, air conditioners, water pumps, etc.
Q: Can you print our company logo on inverters, nameplates, and packaging?
A: Yes, we accept OEM orders and can print your company logo on inverters, nameplates, and packaging.
Q: How do I choose the right inverter?
A: Tell us your requirements, and our sales team will recommend a suitable inverter for you.
Q: How do I solve technical problems?
A: We offer 24-hour after-service consultancy to help you solve any technical problems easily.
Q: Do I need a power inverter?
A: Actually, no. A power inverter is not absolutely required in a solar energy system. However, if you don't use one, you will not have 220 or 230 volts AC and will have to rely solely on battery power. This may be acceptable in a small RV or cabin, but most people prefer to use normal AC appliances.
Q: 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 higher voltages result in less current, allowing the use of smaller wires between the solar panel array and the battery bank. When deciding on a system voltage, the solar panels, inverter, and battery bank must all use the same voltage.
Q: What should I do if the product is broken?
A: If any product is faulty, you can send us pictures or videos. We will study the issue and provide free spare parts for the PCB board as part of our after-sale service.
For more information, please visit our website. Thank you!
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Audited Supplier 
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