Mitel 5602 - Manual (Page 39)

Maintenance
33
Replace the Battery
If the standby time for the cordless handset becomes too low, the battery should be replaced.
Please contact your system administrator or your supplier for information about new batteries.
Insert the battery as described in the illustration below.
Attach the Hinge-type Clip
Attach the hinge clip as described in the illustration below.
Note: After replacing the battery, the “Battery” icon may show an empty battery even
though it is fully charged. Charge the battery for at least one hour to get the correct
reading.
Note: Do not disconnect the battery unless it needs to be replaced.
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