Discussion:
CMOS battery
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Rich Greenberg
2013-04-04 19:53:08 UTC
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How long should the CMOS battery (the [usually] coin shaped battery
[usually] mounted on the mb) last? I am finding that my Toshiba
Sattelite laptop loses the clock and CMOS settings if it is powered down
and unplugged more than a few weeks. Battery replacement time?
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Rich Greenberg Sarasota, FL, USA richgr atsign panix.com + 1 941 378 2097
Eastern time. N6LRT I speak for myself & my dogs only. VM'er since CP-67
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Happy Oyster
2013-04-04 21:30:50 UTC
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Post by Rich Greenberg
How long should the CMOS battery (the [usually] coin shaped battery
[usually] mounted on the mb) last? I am finding that my Toshiba
Sattelite laptop loses the clock and CMOS settings if it is powered down
and unplugged more than a few weeks. Battery replacement time?
I guess it ought to be more than 2 years.
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Sjouke Burry
2013-04-05 04:50:34 UTC
Permalink
Post by Rich Greenberg
How long should the CMOS battery (the [usually] coin shaped battery
[usually] mounted on the mb) last? I am finding that my Toshiba
Sattelite laptop loses the clock and CMOS settings if it is powered down
and unplugged more than a few weeks. Battery replacement time?
4-10 years.
And your problem suggests that you have a chargeable battery
of bad quality, because normally a downtime of a few minutes is
enough to cause problems with a bad battery.
Your few weeks suggests that the battery is charging when the
computer is powered.
In which case a normal battery might not like that.
gargoyle60
2013-04-05 08:23:30 UTC
Permalink
My old Windows 98 home PC still has the original battery and it continues working after 15 years!
Post by Rich Greenberg
How long should the CMOS battery (the [usually] coin shaped battery
[usually] mounted on the mb) last? I am finding that my Toshiba
Sattelite laptop loses the clock and CMOS settings if it is powered down
and unplugged more than a few weeks. Battery replacement time?
Don Phillipson
2013-05-02 18:27:11 UTC
Permalink
Post by Rich Greenberg
How long should the CMOS battery (the [usually] coin shaped battery
[usually] mounted on the mb) last? I am finding that my Toshiba
Sattelite laptop loses the clock and CMOS settings if it is powered down
and unplugged more than a few weeks. Battery replacement time?
If a laptop is to be idle for more than a few days, it is prudent to
remove the power supply battery: otherwise it may be configured to
keep some functions activated, and thus deplete the battery (and
perhaps put extra demands on the CMOS battery as well.)
--
Don Phillipson
Carlsbad Springs
(Ottawa, Canada)
mike
2013-05-02 21:50:21 UTC
Permalink
Post by Don Phillipson
Post by Rich Greenberg
How long should the CMOS battery (the [usually] coin shaped battery
[usually] mounted on the mb) last? I am finding that my Toshiba
Sattelite laptop loses the clock and CMOS settings if it is powered down
and unplugged more than a few weeks. Battery replacement time?
If a laptop is to be idle for more than a few days, it is prudent to
remove the power supply battery: otherwise it may be configured to
keep some functions activated, and thus deplete the battery (and
perhaps put extra demands on the CMOS battery as well.)
I'd argue with that.
Any rational design would let the main battery supply all functions
when available. No need to discharge the CMOS battery when not necessary.
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