Toshiba R840 User Manual
Retention Time for R850 series
Battery type
Sleep Mode
Shut Down Mode
Battery pack (48Wh, 6
cell)
cell)
about 4 days
about 75 days
Battery pack (66Wh, 6
cell)
cell)
about 5 days
about 100 days
RTC battery
about 30 days
about 30 days
RTC battery (High
Capacity)
Capacity)
about 90 days
about 90 days
Retention Time for R840 series
Battery type
Sleep Mode
Shut Down Mode
Battery pack (66Wh, 6
cell)
cell)
about 5 days
about 70 days
Battery pack (93Wh, 9
cell)
cell)
about 5 days
about 105 days
RTC battery
about 30 days
about 30 days
Retention Time for R830 series
Battery type
Sleep Mode
Shut Down Mode
Battery pack (66Wh, 6
cell)
cell)
about 5 days
about 115 days
Battery pack (93Wh, 9
cell)
cell)
about 7 days
about 165 days
RTC battery
about 30 days
about 30 days
Extending battery life
To maximize the life of your battery packs:
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.
and operate it on battery power until the battery pack fully discharges.
Before doing so, follow the steps as detailed below.
1. Turn off the computer's power.
2. Disconnect the AC adaptor and turn on the computer's power - if it
does not turn on then go to Step 4.
does not turn on then go to Step 4.
R850/R840/R830
User's Manual
5-8