If it is a crystalline silicon solar cell, each cell is about 0.5V, and many small parts may be connected in series, so the area cannot be determined accurately.
Amorphous silicon is about 1CM/cell, so for an operating voltage of 5V, the voltage direction side length should be 11CM.
Which one is 12v150w solar light or 5v150w solar light?
It's hard to say. If you throw it in the sun, it will be filled.
The voltage of the 5V solar panel is not 5V, but floating. Under the sun, the solar panel can produce enough voltage and current to charge the cell phone, and if the time is long enough, it can do so. definitely be fully charged.
Many people are hesitant to leave their cell phones and solar panels in the sun and move them indoors. EfficiencyThe conversion rate of solar panels is very low and the output current is very low, which cannot achieve the desired goal. loading.
Does the questioner want to ask: “Which is better, 12v 150w solar light or 5v 150w solar light? ? » The 12v150w solar light is powerful. The charging speed of 12v150w solar light is 12v volts and the brightness is 150w, while the charging speed of 5v150w solar light is 5v volts and the brightness is also 150w, but it is still more powerful than the 12v150w solar lamp. is converted into electrical energy by solar panels.