What are the solar panels made from?

The solar cells in our WakaWaka products are produced by SunPower, one of the best solar companies in the world, with HQ in the US. The kind of solar panel we use is a Mono-crystalline solar panel with an efficiency of 22%, which means that 22% of all the energy that the solar panel absorbs is converted into electricity which is then stored in the lithium polymer battery.