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Article View: alt.sys.pc-clone.dell
Article #4

Re: Running laptop on AC power with battery removed

#4
From: starved
Date: Thu, 13 Aug 2009 18:35
82 lines
4567 bytes
On Aug 13, 12:14 pm, "Christopher Muto" <m...@worldnet.att.net> wrote:
> no crossposting please.  this reply only to alt.sys.pc-clone.dell where it
> was read.
>
> first of all i wonder if you are aware of how dated (old) the information is
> on the web site that you referenced.
> it talks about really old types of battery technology that have not been
> shipped with new computers from any manufacturer in years.
> a battery in a zip lock bag kept in your fridge isn't going to help you if
> you plan on using your laptop like a laptop.  and if you are using your
> laptop as a desktop (plugged into the wall) there is always the chance of
> pulling the power cord out when the unit (or the cord) is moved... and
> without a battery installed in the machine that means you loose whatever you
> happen to be working on.  not using your battery also has a cost.  simply
> put, a battery is not like fine wine, it does not get better when left on a
> shelf to age.  use it or loose it.  what you spend on zip lock bags and in
> time juggling the battery in and out of the system and not having it charged
> when you actually need it will probably cost more in dollars and
> productivity than a replacement battery will cost you when you happen to
> need it.
>
> <star...@rock.com> wrote in message
>
> news:2a7b07e8-c255-4920-864d-20e4badc6352@s15g2000yqs.googlegroups.com...
>
>
>
> > Brand new Dell Inspiron 1545 laptop purchased last week. At this time
> > the system will be used as a desktop, running on AC power continously.
>
> > According tohttp://www.batteryuniversity.comand other sources,
> > leaving the battery in - while always running on AC power and never on
> > battery power - will shorten the life of the battery.
>
> > So the battery's been removed, and with a 40% charge on it, it's in a
> > ziplock bag and stored in the refrigerator.
>
> > The plan is to remove it from storage after some time, put it back in
> > the laptop, recharge it back up to 40%, and then store it in the
> > refrigerator again. This cycle will be repeated indefinitely.
>
> > My questions are:
>
> > 1. How long can the battery remain stored in the refrigerator before
> > it has to be recharged? One month? Two months?
>
> > 2. Should I be concerned about corrosion of the contacts or dust
> > buildup in an empty battery compartment?
>
> > Any help would be greatly appreciated. Thanks!
>
> > - Dave- Hide quoted text -
>
> - Show quoted text -

I can see there are differences in opinion on this topic. I appreciate
all who provided intelligent responses.

After careful consideration, I'm going to go with Barry Watzman's
advice.

- The battery will be stored at 60% state of charge.

- Instead of storing it in a refrigerator, it will be placed in a
drawer, in an air conditioned environment that never gets above about
the high 70's.

- The battery will be given some use 4 times a year. Every 3 months
it'll be charged it to 100%, then run down to 60%, then removed and
put back in storage.

Thanks again!

- Dave
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From: starved@rock.com
Newsgroups: alt.sys.pc-clone.dell,24hoursupport.helpdesk,comp.sys.laptops
Subject: Re: Running laptop on AC power with battery removed
Date: Thu, 13 Aug 2009 11:35:38 -0700 (PDT)
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