wireless earbuds charges fastest with a charger and cable that both support Qi2. The current wireless charging standard, built around a magnetic alignment ring for more consistent power transfer than original Qi.
Using a charger that doesn’t support the device’s preferred fast-charging standard isn’t unsafe — it just falls back to a slower, universally-supported charging rate, typically 5W to 10W over basic USB.
Wireless charging typically tops out well below the device’s maximum wired speed, trading charging time for convenience.
What to buy
Look for a charger explicitly labeled with Qi2 support, paired with a cable rated for the same wattage — a mismatched cable is the most common reason fast charging silently doesn’t kick in.