Toshiba Portege 7140 - Manual (Page 74)

6-6 Power and Power-Up Modes User's Manual
Portege 7140CT User's Manual – 7140_UK.doc – ENGLISH – Printed on 20/12/99 as IM_714UK
Battery charging notice
The battery may not charge right away under the following conditions:
„ The battery is extremely hot or cold. If the battery is extremely hot, it
might not charge at all. Also, to ensure the battery charges to its full
capacity, charge the battery at room temperature of 10° to 30°C (50° to
88°F).
„ The battery is nearly completely discharged. Leave the AC adaptor
connected for a few minutes and the battery should begin charging.
The Battery indicator may show a rapid decrease in battery operating
time when you try to charge a battery under the following conditions:
„ The battery has not been used for a long time.
„ The battery has completely discharged and been left in the computer
for a long time.
„ A cool battery is installed in a warm computer.
In such case, follow the steps below.
1. Fully discharge the battery by leaving it in the computer with the power
on until the power automatically shuts off.
2. Plug in the AC adaptor.
3. Charge the battery until the Battery indicator shows green.
Repeat the steps two or three times until the battery recovers normal capacity.
Monitoring battery capacity
Remaining battery power can be monitored by the Power Saver Utility
program.
Wait at least 16 seconds after the computer has completed start-up
before trying to monitor the remaining operating time. The computer
needs this time to check the battery’s remaining capacity and to calculate
the remaining operating time, based on the current power consumption
rate and remaining battery capacity. The actual remaining operating time
may differ slightly from the calculated time.
With repeated discharges and recharges, the battery’s capacity will
gradually decrease. Therefore, an often used, older battery will not
operate for as long as a new battery even when both are fully charged. In
this case, Power Saver Utilities will indicate a 100% charge for both the
old and new battery, but the displayed estimated time remaining will be
shorter for the older battery.