| 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 an advanced charging method designed to maximize power output from solar panels.
The MPPT, which stands for maximum power point tracking, monitors the power generation voltage of the solar panel in real time. By tracking the highest voltage and current values, the controller ensures that the battery is charged with the maximum power output.
This series of controllers features a fully automatic maximum power point tracking mode, eliminating the need for user adjustment. As the maximum power point of the solar panel varies with environmental conditions, the controller constantly tracks the panel's maximum power point to extract the maximum energy from the solar array.
Key Features:
Choose the Solarthon MPPT Solar Charge And Discharge Controller to maximize the power output of your solar array and ensure efficient battery charging.
| 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 |
Company Name: Guangdong Solarthon Technology Co., Ltd.
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 consult our engineers.
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 inverter and modified sine wave inverter?
A: Pure sine wave output inverters provide power similar to the public power grid, if not better. They have a low repair rate, long lifespan, no harmonic pollution, and are environmentally friendly. On the other hand, modified sine wave output inverters can negatively impact appliances and cannot load inductive loads such as air conditioners and refrigerators. Certain motor control circuits may not be compatible with modified sine wave output.
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: Simply tell us your requirements, and our sales team will recommend a suitable inverter for you.
Q: How do I solve technical problems?
A: We provide 24-hour after-service consultancy to help you easily solve any technical problems you may encounter.
Q: Do I need a power inverter?
A: Technically, no. A power inverter is not absolutely required in a solar energy system. However, without a power inverter, you will not have 220V or 230V AC power and will solely rely on battery power. While this may be acceptable for small RVs or cabins, most people prefer to use normal AC appliances.
Q: What's the difference between 12, 24, and 48 volt inverters?
A: The voltage refers to the input voltage from the battery bank. The main consideration is that at higher voltages, the current is lower, allowing you to use smaller wires between your solar panel array and battery bank. It's important to ensure that the solar panels, inverter, and battery bank all use the same voltage when deciding on a system voltage.
Q: What should I do if the product is broken?
A: If any product is faulty, please send us pictures or videos for our assessment. We will provide the necessary spare parts of the PCB board for free as part of our after-sale service.
For more information, please click here. Thank you!
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