| After-sales Service: | 3years |
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| Warranty: | 3years |
| Condition: | New |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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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 | 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 our inverters are true pure sine wave.
What kind of output can you provide?
Q: 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 consulting.
What's the difference between a low frequency and high frequency inverter?
Q: A low frequency inverter has various protections, a strong ability to adapt to the environment, and is more reliable with voltage regulation.
What's the difference between a pure sine wave inverter and a modified sine wave inverter?
Q: A pure sine wave output inverter is just as good as the public power grid, if not better. It has a low repair rate, long lifespan, no harmonic pollution, and is environmentally friendly while also protecting appliances. On the other hand, a modified sine wave output has a negative impact on appliances and cannot load inductive loads such as air conditioners and refrigerators. Certain motor control circuits do not work well with the modified wave.
What appliances can your inverters load?
Q: Our inverters can be used with household, office, 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?
Q: Yes, we accept OEM orders and can print your company logo on inverters, nameplates, and packaging.
How do I choose the right inverter?
Q: Simply tell us your demand, and our sales team will recommend a suitable inverter for you.
How do I solve technical problems?
Q: We offer 24-hour after-service consultancy to make it easy for you to solve any technical problems you may encounter.
Do I need a power inverter?
Q: Actually, no. A power inverter is not absolutely required for 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. While this may be acceptable in a small RV or cabin, most people prefer to use normal AC appliances.
What's the difference between 12, 24, and 48 volt inverters?
Q: This refers to the input voltage from the battery bank. The main consideration is that at higher voltages, the current is less, allowing you to use smaller wires between your solar panel array and your battery bank. When deciding on a system voltage, it's important to ensure that the solar panels, inverter, and battery bank all use the same voltage.
What should I do if the product is broken?
Q: If any product is faulty, you can send us pictures or videos, and we will study them and provide the necessary spare parts of the PCB board for free as part of our after-sale service.
For more information, please visit our website. Thank you!
Suppliers with verified business licenses
Audited Supplier 
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