Panasonic KX-TC1731B - Manual (Page 15)

Battery information
After your Panasonic battery is fully charged {p. 14);
Operation Approx, battery life
While in use (TALK) Up to about 8 hours
While not in use (Stand-By) Up to about 21 days
o Battery life may be shortened depending on usage conditions, such as
viewing the Caller ID Caller List, and ambient temperature,
o Clean the handset and the base unit charge contacts with a soft, dry
cloth once a month. Clean more often if the unit is subject to
grease, dust or high humidity. Otherwise the battery may not charge
properly.
o If the battery is fully charged, you do not have to place the handset on the
base unit until “Recharge” is displayed and/or “( D ]” flashes. This will
maximize the battery life,
o The battery cannot be overcharged.
Stand-by mode {The handset is off the base unit.)
The handset goes into the stand-by mode after you finish using the
handset (making/answering a call, viewing the Caller List, etc.).
The display is blank, but the handset can receive calls.
The battery life is conserved in this mode.
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