It takes 1.5 hour to fully charge the hearing aid and 5 minutes to use it for half an hour.
The charging case can fully charge the hearing aids three times.
The hearing aids can be charged by placing them in the charging case. The charging case shows red to indicate that it is charging and green to indicate that it is fully charged.
(If there is just one aid that cannot be charged) Put the aid in the slot for another aid in the charging case to check whether it can be charged.