Wireless chargers refer to chargers that do not use traditional charging power cords to connect to terminal devices that need charging. They use the latest wireless charging technology. Wireless charging technology obtained 20 patents in 2007. Multiple devices can use one charging base station, eliminating the need for wired charging of cell phones, MP3 players, power tools and other power adapters. By using the magnetic field generated between coils to magically transmit electrical energy, inductive coupling technology will become a bridge connecting charging base stations and devices.
Most current chargers, such as iPads and iPhones, charge the built-in battery of the device through direct contact with metal wires. The advantages of wireless charging technology are convenience and versatility. The disadvantage is low efficiency and can only provide electrical energy. Apple's Dock connector not only provides power, but also synchronizes audio and video files to the device through the USB interface. However, wireless charging technology will still bring improvements to WiFi and battery technology. For devices that do not require data transmission, this new technology will greatly reduce the number of various chargers required by users. In addition, through the use of wireless charging technology, public mobile device charging stations will likely become a reality.