Boly Guard BC-02 is a solar charger that includes a solar panel and a mobile power bank. This highly efficient monocrystalline silicon design is specially designed for wildlife cameras, but can also be widely used to support the energy of other electrical devices (e.g. phone, tablet) with the help of a USB cable. The product is waterproof and dustproof. The BC-02 can be charged with solar energy and a mains adapter. The solar panel ensures the power supply of the wildlife camera that is being charged, and at the same time extends the charging time. The efficiency of solar charging can be affected by the weather of the seasons (e.g. the charging time will be much faster on sunny days). The solar charging set contains 4 special 18650 "+" peak batteries designed for this device. Other 18650 batteries are not compatible with the charger!* The battery is an industry standard. It does not have protection against overcharge and deep discharge, so it is recommended to charge it under supervision.