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Groups > comp.sys.laptops > #1899 > unrolled thread

CMOS battery

Started byrichgr@panix.com (Rich Greenberg)
First post2013-04-04 19:53 +0000
Last post2013-05-02 14:50 -0700
Articles 6 — 6 participants

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  CMOS battery richgr@panix.com (Rich Greenberg) - 2013-04-04 19:53 +0000
    Re: CMOS battery Happy Oyster <-*-*.@.*-*-> - 2013-04-05 01:30 +0400
    Re: CMOS battery Sjouke Burry <s@b> - 2013-04-05 04:50 +0000
    Re: CMOS battery gargoyle60 <gargoyle60@example.invalid> - 2013-04-05 09:23 +0100
    Re: CMOS battery "Don Phillipson" <e925@SPAMBLOCK.ncf.ca> - 2013-05-02 14:27 -0400
      Re: CMOS battery mike <ham789@netzero.net> - 2013-05-02 14:50 -0700

#1899 — CMOS battery

Fromrichgr@panix.com (Rich Greenberg)
Date2013-04-04 19:53 +0000
SubjectCMOS battery
Message-ID<kjkln4$alp$1@reader1.panix.com>
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?

-- 
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
Canines: Val,Red,Shasta,Zero,Casey & Cinnar (At the bridge)   Owner:Chinook-L
Canines: Red & Max (Siberians)     Retired at the beach  Asst Owner:Sibernet-L

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#1900

FromHappy Oyster <-*-*.@.*-*->
Date2013-04-05 01:30 +0400
Message-ID<n7srl81s9v9krn37rm1svq8ij3asso2303@4ax.com>
In reply to#1899
On Thu, 4 Apr 2013 19:53:08 +0000 (UTC), richgr@panix.com (Rich
Greenberg) wrote:

>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. 
-- 

Crowd-funding is for money, crowd-publishing is for mankind.

http://www.supermanpost.com/

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#1901

FromSjouke Burry <s@b>
Date2013-04-05 04:50 +0000
Message-ID<XnsA1994575B938Dsjoukeburrysoesterbe@213.75.12.10>
In reply to#1899
richgr@panix.com (Rich Greenberg) wrote in news:kjkln4$alp$1
@reader1.panix.com:

> 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. 

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#1902

Fromgargoyle60 <gargoyle60@example.invalid>
Date2013-04-05 09:23 +0100
Message-ID<de2tl89tuipu3o5nhm18emsf6uv5ptdekm@4ax.com>
In reply to#1899
My old Windows 98 home PC still has the original battery and it continues working after 15 years!


On Thu, 4 Apr 2013 19:53:08 +0000 (UTC), richgr@panix.com (Rich Greenberg) wrote:

>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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#1935

From"Don Phillipson" <e925@SPAMBLOCK.ncf.ca>
Date2013-05-02 14:27 -0400
Message-ID<klub6o$k5v$2@speranza.aioe.org>
In reply to#1899
"Rich Greenberg" <richgr@panix.com> wrote in message 
news:kjkln4$alp$1@reader1.panix.com...

> 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) 

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#1936

Frommike <ham789@netzero.net>
Date2013-05-02 14:50 -0700
Message-ID<klumti$5er$2@dont-email.me>
In reply to#1935
On 5/2/2013 11:27 AM, Don Phillipson wrote:
> "Rich Greenberg"<richgr@panix.com>  wrote in message
> news:kjkln4$alp$1@reader1.panix.com...
>
>> 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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