The airpods' red light keeps blinking
The airpods charging case blinking red indicates that the battery is too low to fully charge the AirPods. You are advised to charge the AirPods in time to avoid affecting the normal use of the earphones.
airpods Official cleaning recommendations
Wipe the shell with a dry lint-free soft cloth or microfiber cloth;
Use dry cotton swabs to clean the microphone and speaker cover.
Use a dry soft brush to remove debris from the mesh cover.
If necessary, wipe with 70% isopropyl alcohol lightly dampened cloth;
Apple airpodspro headset, its charging bin has always been a red light (red dot), generally the battery is very low, charging is very slow, half an hour after the power is high, it will not flash red, normal charging.
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If it keeps flashing for a long time, the headset battery may be broken. There are earphones in the battery compartment, and the indicator indicates the earphone power level and the charging status of the earphone.