As long as the power of the air conditioner is less than the maximum output power of the inverter, it can be used, but it is best to leave enough margin. The input voltage of the inverter is generally 12V, 24V, 36V and 48V, and the output voltage is generally 220V. Of course, there are other models that can output different voltages. The price and quality of inverter are mainly determined by the following parameters: output power, conversion efficiency and output waveform quality. Just compare these parameters to know the quality of this inverter. Frequency converter is a common equipment. As long as it belongs to the ordinary model, it will be sold in electrical repair shops and almost all electronic markets, and as long as it can be repaired in electrical repair shops with acceptable technology, the electronic market can be repaired even more. If it is an unusual model or has a high power, it can only be customized in the electronic market or online. Inverter is a device that converts DC electric energy into alternating current (generally a sine wave of 220 V and 50 Hz). This is contrary to the function of rectifier, which converts AC power into DC power. The inverter consists of an inverter bridge, a control unit and a filter circuit. Widely used in air conditioners, power tools, computers, televisions, washing machines, refrigerators, massagers and other electrical appliances.

When selecting and using the frequency converter, the following points must be noted:

1) DC voltage must match;

Each inverter has a nominal voltage, such as 12V and 24V.

It is required that the selected battery voltage must be consistent with the nominal DC input voltage of the inverter. For example, 12V inverter must choose 12V battery.

2) The output power of inverter must be greater than the maximum power of electrical appliances;

In particular, some equipment with high starting energy demand, such as motors and air conditioners, need to leave extra power margin.

3) The positive and negative electrodes must be connected correctly.

The DC voltage connected to the inverter is marked with positive and negative poles. Generally speaking, red is the positive pole (+) and black is the negative pole (-). The battery is also marked with positive and negative poles, with red as the positive pole (+) and black as the negative pole (-). When connecting, be sure to connect the positive electrode (red to red) and the negative electrode (black to black). The diameter of the connecting line must be thick enough to minimize the length of the connecting line.

4) The charging process and the inverter process cannot be carried out at the same time, so as not to damage the equipment and cause failure.

5) The inverter housing should be properly grounded to avoid personal injury caused by leakage.

6) In order to avoid electric shock injury, non-professionals are forbidden to disassemble, repair and modify the frequency converter.