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info Edifier
Status Blue LED blinks twice every 5s
Indicates charging and battery percentage.
? What Causes This
Battery is currently being charged.
ⓘ What This Means
Charge the headphones by plugging in the charger. The LED will turn green when fully charged.
Source: page 2 of the official manual
From the manual
This error code appears in:
Edifier WH950NB Bk Wireless Noise Cancellation Over Ear Headphones