The hidden pros and cons of wireless charging
How useful or risky is wireless charging? Learn the risks and benefits in this handy guide.
How does it work?
●Wireless charging uses an electromagnetic field to transfer energy between two objects. Energy is sent through an inductive coupling to an electrical device, which can then use that energy to charge batteries or run the device.
●Protects connections: No corrosion due to enclosed electronics, so no exposure to water and oxygen. Less risk of electrical faults (e.g. short circuits due to insulation failure), especially with frequent plugging/unplugging.
●Low infection risk: Major benefit for embedded medical devices. Power transmission via a magnetic field passing through the skin safely, avoiding infection risks associated with wires penetrating the skin.
●Enhanced durability: With no need for constantly plug and unplugging, there is significantly less wear and tear on both the device socket and cables.
●Increased convenience: No need for cables that can be tangled, and improved aesthetics.
●Slower charging: Due to the lower efficiency, devices take a longer time to charge when supplied with same amount of power.
●More expensive: Wireless charging is still not mainstream, requiring drive electronics and coils in both the device and charger. This increasing manufacturing cost complexity and cost.
●Added inconvenience: When a mobile device is connected via cable, it can still be freely moved around and operated while charging. With inductive charging, the mobile device must generally be left on a charging pad, greatly limiting its usability.
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