Re: Dead battery after storage on T400s

Message-ID	<6786cba9@news.ausics.net> (permalink)
From	not@telling.you.invalid (Computer Nerd Kev)
Subject	Re: Dead battery after storage on T400s
Newsgroups	comp.sys.laptops.thinkpad
References	<vm4ft3$24bue$1@dont-email.me> <vm69c5$2h5vb$1@dont-email.me>
Date	2025-01-15 06:40 +1000
Organization	Ausics - https://newsgroups.ausics.net

Show all headers | View raw

bp@www.zefox.net wrote:
> Turns out I searched the manual for "battery testing" and variations,
> but the test points were revealed under   "charging". My bad....
> 
> With the battery status at 99% the removed battery measures 12.2 volts,
> which seems pretty good. The run-time still seems short however.

The "battery status" charge percentage is a measure of the battery
voltage by the computer, so not surprising that it looks good at
99% charged. The symptoms sound like a typical worn out battery.

> It further turns out that the power button was set to sleep, not shutdown.

Well that explains the fast self-discharge. Some laptops do seem to
wear down the battery more when stored for a long time than if
the battery is removed. I'm not sure if the T400s is one of those,
but it shouldn't discharge as quickly as you describe if it was
fully turned off.

> One pleasant surprise is that the machine seems to work fine with the
> battery physically removed.

I think every laptop I've encountered worked fine without a
battery.

-- 
__          __
#_ < |\| |< _#

Back to comp.sys.laptops.thinkpad | Previous | Next — Previous in thread | Next in thread | Find similar

Thread

Dead battery after storage on T400s bp@www.zefox.net - 2025-01-14 01:50 +0000
  Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-01-14 18:11 +0000
    Re: Dead battery after storage on T400s not@telling.you.invalid (Computer Nerd Kev) - 2025-01-15 06:40 +1000
      Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-01-15 17:25 +0000
        Re: Dead battery after storage on T400s Adrian Caspersz <email@here.invalid> - 2025-01-15 21:02 +0000
          Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-01-15 22:03 +0000
        Re: Dead battery after storage on T400s not@telling.you.invalid (Computer Nerd Kev) - 2025-01-16 07:44 +1000
          Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-01-15 22:45 +0000
            Re: Dead battery after storage on T400s Computer Nerd Kev <not@telling.you.invalid> - 2025-01-16 13:47 +1000
              Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-01-16 16:10 +0000
                Re: Dead battery after storage on T400s Computer Nerd Kev <not@telling.you.invalid> - 2025-01-17 12:53 +1000
                Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-01-17 04:26 +0000
                Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-02-07 19:05 +0000
                Re: Dead battery after storage on T400s not@telling.you.invalid (Computer Nerd Kev) - 2025-02-08 07:49 +1000
                Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-02-08 20:33 +0000
                Re: Dead battery after storage on T400s not@telling.you.invalid (Computer Nerd Kev) - 2025-02-09 09:54 +1000
                Re: Dead battery after storage on T400s bp@www.zefox.net - 2025-02-09 01:44 +0000

csiph-web