Widex M‑DEX - Manual (Page 11)

It takes approximately 6 hours to charge the battery
the first time . Allow the battery to charge for the full six
hours, even if the “battery full” icon appears .
Recharging takes approx . 3 hours, depending on
whether the device is turned on or off .
WARNING
Do not attempt to change the battery . Contact your hearing
care professional .
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