How long does it take to charge Phonak hearing aids?

The indicator light on the hearing aid will show the charging state of the battery until the hearing aid is fully charged. When fully charged the indicator light will remain on, i.e. solid green light.  

The charging process will automatically stop when the batteries are fully charged, so the hearing aids can be safely left in the charger. It can take up to 3 hours to charge the hearing aids*. The charger lid can be closed while charging. 
 

* up to 3.5 hours in case of Audéo I-Sphere.