From: Ferrite shielding thickness and its effect on electromagnetic parameters in wireless power transfer for electric vehicles (EVs)
Device
Power rating (watts)
Electric vehicle (EV) [3]
7.2–22 kW
Medical implant device [6]
0.01–5 W
Mobile phone charger [27]
5–15 W
Electric toothbrush charger
0.5–2 W
Wireless headphone charger
1–3 W
Smartwatch charger
1–5 W
Drone battery charger
50–200 W
Laptop charging pad [27]
30–60 W
