oticon More Series Instructions For Use Manual page 33

Long-term storage
Before you put away or store the hearing aid for a prolonged period of
time (more than 14 days), ensure you first fully charge the hearing aid,
and then turn it OFF. This way the battery can be charged again.
Note
To protect the rechargeable battery, it is necessary that you fully charge
the hearing aid every six months. If a stored hearing aid is not charged
within a six month period, the rechargeable battery must be replaced.
For instructions on how to charge your hearing aid, see the charger's
instructions for use.
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