When choosing a portable solar generator, the first thing that you need to know is what kind of solar panels are used in a particular generator. In general, there are three types of solar panels available on the market: thin film panels, monocrystalline panels, and polycrystalline panels.Thin film panels are the most common type of solar panel used for portable solar generators because they are cheap, easily created, and lightweight. However, their performance is quite poor compared to other types of solar panels, being able to convert and store only about 20% of total sunlight absorbed.
Monocrystalline panels, on the other hand, have higher conversion and storage percentages, but they are more expensive compared to thin film panels. These panels generally use high-quality silicon, making them more durable as well.
Polycrystalline panels are made from melting and forming together fragments of silicon, and you can recognize them by their distinct blue color. Polycrystalline panels perform better than thin film panels, but more poorly compared to monocrystalline panels.
Aside from the type of material used for the solar panels, you will need to check the specs and ratings of a portable solar panel. Make sure that the product meets the IEC 61730 safety standards, as well as the ISO 14001 environmental standards. The IEC 6115 stamp means that the portable solar generator can weather a variety of different environmental conditions, but you also need to look out for a salt and ammonia resistance rating if you’re going to use it near saltwater.