These miniature solar cells are ideal for experiments as well as for off-grid power supplies for small consumers or for charging batteries. To achieve the desired voltage and current, the modules can be easily connected either individually or in parallel or series. Corresponding solder pads are available on the back for this purpose. These miniature solar cells are available in monocrystalline form. The monocrystalline cells have a uniformly dark color and are made from a single silicon crystal. Compared to polycrystalline cells with a recognizable crystal structure, monocrystalline cells have a slightly better efficiency.