Advanced Bionics Naida CI M90 Manuel D'utilisation page 46

making sure not to pull up until the sound processor is free from the
connectors.
Remember to wipe the battery case with a soft, lint-free cloth and air dry
overnight after any water related activities. Continue use of the Slim HP
AquaMic.
Replacing the O-Ring on the M Waterproof Battery
The M Waterproof Battery O-Ring should be inspected prior to each use
and will need to be changed periodically. If damage to the O-Ring is
observed or suspected, replace prior to resuming use. The M Waterproof
Battery and O-Ring should be rinsed following submersion in salt or
chlorine treated water.
To remove the existing O-Ring, use your fingers to lift a portion of the old
O-Ring out of the M Waterproof Battery. Once a portion of the O-Ring
is lifted out, hold the O-Ring and pull the remaining portion out of the M
Waterproof Battery mounting groove.
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