This rare-earth magnet array component allows for perfectly aligned connection between devices and ensures Qi2 standards. Testing various weight to strength ratios with this particular component at N52 magnetic strength, which is extremely strong.
Qi2 uses magnetic coils that vibrate at specific frequencies (87-205 kHz) to wirelessly transfer up to 15W of power—think of it like two guitar strings that resonate together. The magnetic ring's job is to perfectly line up these coils, which older Qi chargers struggled with, boosting efficiency from around 60% to over 75%. The system constantly monitors itself through feedback loops to optimize power transfer and check for metal objects that could interfere (foreign object detection). Those N52 magnets generate about 13,200 Gauss of magnetic field strength, which translates to roughly 2-3 pounds of holding force—strong enough to keep your phone locked in the sweet spot where charging works best.