| 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 ChargeAnd Discharge Controller, developed by Guangdong Solarthon Technology Co., Ltd., is designed to optimize the charging process of solar panels. Utilizing the maximum power point tracking (MPPT) technology, this controller constantly monitors 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.
Unlike traditional controllers, the MPPT mode of this series of controllers is fully automatic and does not require any user adjustment. This means that as the maximum power point of the solar panel varies with environmental conditions, the controller automatically tracks the maximum power point of the panel. This ensures that the solar array extracts the maximum amount of energy possible
With the Solarthon MPPT Solar ChargeAnd Discharge Controller, you can optimize the performance and efficiency of your solar panel system. Take advantage of advanced charging technology and maximize your energy extraction from the solar array.
| 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 |
Here are some frequently asked questions about our inverters:
A: Yes, all our inverters provide true pure sine wave output.
A: Normally, our inverters have self-adaptive outputs of 110V, 115V, 120V, 220V, 230V, and 240V at 50/60Hz. If you have any special requirements, please consult our engineers.
A: Low-frequency inverters offer various protections, strong adaptability to the environment, and reliable voltage regulation. They are more reliable compared to high-frequency inverters.
A: Pure sine wave output inverters provide power similar to the public power grid, with low repair rates, long lifespan, no harmonic pollution, and environmental friendliness. On the other hand, modified sine wave output can negatively impact appliances and cannot load inductive loads such as air conditioners and refrigerators.
A: Our inverters are suitable for household, office, agricultural appliances, and other inductive loads such as refrigerators, air conditioners, and water pumps.
A: Yes, we accept OEM orders and can print your company logo on the inverters, nameplates, and packaging.
A: Simply tell us your requirements, and our sales team will recommend a suitable inverter for you.
A: We provide 24-hour after-service consultancy to help you easily solve any technical issues you may encounter.
A: While a power inverter is not absolutely necessary, it is essential if you want to use normal AC appliances. Without a power inverter, you will only have battery power and won't have access to 220 or 230 volts AC.
A: The voltage refers to the input voltage from the battery bank. Higher voltages allow for lower currents, enabling the use of smaller wires between the solar panel array and the battery bank. It's important to ensure that the solar panels, inverter, and battery bank all use the same voltage.
A: If any product is faulty, please send us pictures or videos for assessment. We will 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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