Real time clock (rtc) battery – Toshiba Libretto U100 User Manual
Page 126
![background image](/manuals/22622/126/background.png)
6-4
User’s Manual
Power and Power-Up Modes
To ensure that the battery pack maintains its maximum capacity, operate
the computer on battery power at least once a month until the battery pack
is fully discharged. Refer to
in this chapter for
procedures. If the computer is continuously operated on AC power through
an AC adaptor for an extended period, for example more than a month, the
battery may fail to retain a charge, it may not function efficiently over the
expected life of the battery and the Battery indicator may not indicate a
low-battery condition.
Real Time Clock (RTC) battery
The Real Time Clock (RTC) battery provides power for the internal real
time clock and calendar. It also maintains the system configuration.
If the RTC battery becomes completely discharged, the system loses this
data and the real time clock and calendar stop working. The following
message appears when you turn on the power:
S
**** RTC battery is low or CMOS checksum is
inconsistent ****
Press [F1] key to set Date/Time.
You can change the settings maintained by the RTC battery by pressing F1
key. Refer to Chapter 9
for details on how to do this.
■
The battery pack is a lithium ion battery, which can explode if not
properly replaced, used, handled or disposed of. Dispose of the battery
as required by local ordinances or regulations. Use only batteries
recommended by TOSHIBA as replacements.
■
Always dispose of used battery packs in compliance with all applicable
laws and regulations. Put insulating tape, such as cellophane tape, on
the electrode during transportation to avoid a possible short circuit, fire
or electric shock. Failure to do so could possibly result in serious injury.
■
Do not remove the battery pack while the computer is in Standby mode.
Data is stored in RAM, so if the computer loses power it will be lost.
When the computer is powered off in Standby mode, and the AC
adaptor is not connected, the battery pack supplies power to maintain
data and programs in memory. If the battery pack is completely
discharged, Standby mode will not function and the computer will lose
all data in memory.
The computer’s RTC battery is a lithium ion battery and should be replaced
only by your dealer or by a TOSHIBA service representative. The battery
can explode if not properly replaced, used, handled or disposed of.
Dispose of the battery as required by local ordinances or regulations.
- e310
- e750
- e750
- NB100
- NB305
- NB305
- NB305
- Satellite Pro L20
- Tecra A7
- Satellite Pro S200
- Tecra A3
- M5
- Satellite Pro L40
- Satellite Pro L40
- NB200
- Tecra M9
- Tecra M4
- Tecra A8
- Satellite Pro M40X
- Satellite Pro P200
- Equium U300
- Tecra S3
- Tecra A2
- Satellite Pro M40
- Tecra M7
- A215-S4767
- A215-S7422
- U200
- 2550CDT
- A210-EZ2202X
- A120
- A210
- Satellite Pro A300
- A205
- A20-S259
- 4600
- A215-S6804
- A2
- A210-EZ2203X
- Satellite Pro L310
- A45
- X500-S1801
- A200
- A200
- SATELLITE M300
- A200 SE
- U305-S7448
- Toshubia Tecra R940
- A215-S7472
- A135-S2266
- 5100 9
- Excite 10 GMAD00301010
- BRnR 4000 4005WLMi
- U305-S2812
- X205-SLi1
- 2405
- Tosvert VF-MB1/S15
- U305-S7477
- TOSVERT VF-S15 series option unit Function E6581830
- U400-S1001X
- 1600EP
- U205-S5057
- A205 EN
- Satellite L755D
- Satellite Pro L550D
- Satellite L550
- Satellite M840-B
- Satellite Pro L830
- Satellite R830
- Portege R830
- Satellite R930
- Tecra Z40t-A
- Tecra Z40t-A
- WT310
- WT310
- WT310
- Satellite C670D
- Equium U400
- Satellite U400D
- Portege M800
- Satellite Pro A300
- Satellite Pro A300
- Satellite L775D
- Tecra A11
- Tecra A11
- Tecra A10
- Satellite C650D
- Satellite L755D
- Satellite L50D-A
- Satellite P50-A
- Satellite L50DT-A
- Satellite Pro NB10-A
- Satellite Pro NB10-A
- Qosmio PX30T-A
- Satellite L70-B
- Satellite Pro L670
- Satellite Pro L500D
- Satellite L505
- Satellite L505
- Satellite C660D
- Satellite Pro C660
- Qosmio G50
- Equium L300
- Satellite L350
- Satellite L350
- Satellite L350
- Satellite L850
- Satellite L855D
- Satellite L855-B
- Satellite C850-C
- Satellite Pro C50D-A
- Satellite C50-A
- Satellite C50-A
- Satellite L70-B
- Satellite L70-B
- Satellite P50-B
- WT10-A
- Satellite Pro L300
- Satellite C660D
- Satellite P50-A
- Qosmio X500
- Qosmio X500
- Satellite U40T-A
- Satellite L870-E
- Satellite L875
- Satellite L870D
- Satellite Pro L450D
- Portege Z930-E
- Satellite Z930
- Portege Z930-E
- Satellite Z930
- Tecra A50-A
- Satellite Pro A50-A
- Satellite Pro A50-A
- Tecra A50-A
- Satellite Pro A50-A
- Satellite Pro T110
- Satellite P300
- Satellite Pro C70-A
- Satellite Pro C70-A
- Satellite C50D
- Portege R30-A
- Satellite U920T
- Satellite U920T
- Satellite T230
- Equium L350
- Satellite P300
- AT200
- Satellite U940
- AT270
- Satellite A500D
- Satellite A500D
- Satellite L550D
- Qosmio F750
- Qosmio F750
- Qosmio F750
- Satellite P40T-A
- Satellite C50-A
- Satellite Pro A300D
- Satellite A300D
- Satellite Pro R50-B
- Satellite Pro R50-B
- Satellite S70-A
- Satellite Pro U500
- Satellite Pro U500
- LX830-B
- Portege Z830
- Satellite P875
- Satellite P875
- AS200
- Qosmio X70-A
- Satellite L655D
- Satellite P775
- Satellite Pro A50-A
- Portege R600
- Portege R600
- Qosmio X875
- Qosmio X875
- Satellite L950D
- Satellite L950
- Satellite A660
- Satellite A660
- Satellite A660
- Satellite P850
- Satellite P850
- Satellite P850
- NB520
- NB500
- Satellite Pro S300L
- Satellite W30T-A
- Satellite P845
- Satellite P845
- Satellite L30W-B
- AT300
- Satellite L670D
- Tecra M11
- Tecra M11
- Portege M750
- Satellite L735
- Qosmio X70-A
- Qosmio F60
- LX830
- Satellite A350D
- Satellite Pro L630
- A1
- NB200
- NB200
- Satellite C55DT-A
- Tecra R10
- Qosmio X770
- Satellite U840
- Satellite U840T
- Satellite U840
- AT300SE-B
- Satellite Pro C840
- Satellite U840W
- Satellite U840W
- Satellite R630
- Qosmio X300
- Qosmio X300
- Satellite P755
- Satellite P755
- Qosmio F50
- KIRA
- WT8-A
- NB510
- AT10PE-A
- AT10-A
- Qosmio DX730
- Qosmio DX730
- Qosmio DX730
- Portege M780
- Satellite Pro C40-A
- Satellite C640
- Satellite C640
- WT7-C
- Satellite U50-A
- CB30
- Satellite Pro S750
- Satellite L740