Toshiba SG-1801 Owner's Manual page 13

After the battery pack is fully charged;
Operation
While in use (Talk mode)
While not in use (Standby mode)
When "Low Battery" blinks on the LCD, all handset buttons except
are disabled and the battery needs to be charged. If this occurs
TALK
during a call, you hear short beeps. Finish the call as soon as possible
and place the handset on the base unit.
NOTES:
• If a call comes in when the battery is too low to operate properly, you will be
unable to answer the call or the call will be disconnected.
• The redial memory numbers backup for up to 2 minutes while you replace
the battery pack.
• If you must replace the battery pack during a telephone call, complete the
replacement of the battery pack within 30 seconds, and you can return to the
original call.
INSTALLATION
Approx. battery life
up to 6 hours
up to 10 days
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