Extending Battery Life - Toshiba SATELLITE R850 User Manual

Batteries exhausted time
When you turn off the power of your computer with batteries fully charged,
the batteries will be exhausted within the following approximate period:
Retention Time for R850 series
Battery type
Battery pack (48Wh, 6
cell)
Battery pack (66Wh, 6
cell)
RTC battery
RTC battery (High
Capacity)
Retention Time for R840 series
Battery type
Battery pack (66Wh, 6
cell)
Battery pack (93Wh, 9
cell)
RTC battery
Retention Time for R830 series
Battery type
Battery pack (66Wh, 6
cell)
Battery pack (93Wh, 9
cell)
RTC battery

Extending battery life

To maximize the life of your battery packs:
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User's Manual
At least once a month, disconnect the computer from a power source
and operate it on battery power until the battery pack fully discharges.
Before doing so, follow the steps as detailed below.
Sleep Mode
about 4 days
about 5 days
about 30 days
about 90 days
Sleep Mode
about 5 days
about 5 days
about 30 days
Sleep Mode
about 5 days
about 7 days
about 30 days
R850/R840/R830
Shut Down Mode
about 75 days
about 100 days
about 30 days
about 90 days
Shut Down Mode
about 70 days
about 105 days
about 30 days
Shut Down Mode
about 115 days
about 165 days
about 30 days
5-8