Hello! I'm happy to answer them for you! Generally, the open circuit voltage of a photovoltaic cell module is about 36V. Whether you use a 36V module or a 600V series power supply, it needs to be converted to 220V through the boost or buck inverter and DC to AC conversion. The initial voltage range of photovoltaic power supply for alternating current, used for household appliances such as televisions, refrigerators and washing machines, is 36 to 600 V. After conversion by an inverter, it is generally 220 V. If you are satisfied, help the island adopt it. I wish you and your family happiness and health forever!
The label on the back of the solar panel usually carries the nominal voltage (Voc) and the operating voltage (Vm) of the panel.
The nominal voltage is also called open circuit voltage, i.e. the value of tension of the solar panel under maximum lighting conditions, without any load or current output. Therefore, these can also be considered as the upper limit of the solar panel output voltage.
The operating voltage is the voltage value of the solar panel under maximum lighting conditions and when it is connected to an electrical load and has a current output.
For battery charging, it mainly depends on the working voltage of the solar panel. Generally, lead-acid batteries are 12V, so the working voltage of the solar panel should be around 18V to ensure normal charging. .