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From: Father Justin on 11 Jan 2010 19:15
Normally I rely on the power of the Holy Spirit. However when the Holy
Spirit is on vacation I rely on a Lithium Ion battery to power my laptop.
Do they eventually stop charging? Back in the days of NiCd and NiMH,
batteries would be able to charge and discharge X number of times.
Is this still true for LiION? One time I received a usenet tip to reset
a setting in the laptop's bios, and freeze the battery that wouldn't
hold a charge. After the battery was frozen for 24 hours, it was
brought to room temperature, charged and seemed to work fine - including
holding a charge again. Does that old school trick still work?

--
http://www.vatican.va
From: Barry Watzman on 11 Jan 2010 23:19
Lithium batteries have a finite number of charge-discharge cycles; the
number varies but is typically in the mid-hundreds.

You do not have to worry about "memory effect" that was an issue with
NiCD batteries. In fact, practices that were used with NiCads are
actually harmful to Lithium batteries.

If the laptop is plugged in all the time, remove the battery. Being
continuously installed in a laptop that is always plugged in will
destroy the battery over a period of 6 to 24 months. The culprit is a
combination of exposure to high temperatures and over charging, but over
a decade of user experience makes it clear that removing the battery is
the best thing to do on the vast majority of laptop models. [Note, the
battery does need to be "exercised" every 60 or 90 days.]

I've never heard of your freezing trick. I would not recommend that for
a lithium battery, indeed actually freezing the battery (below 32
degrees F) will possibly damage it. Some laptops have battery
calibration software, either in Windows, the BIOS or on a utility
program, I'd say that most don't. Some laptops will "recalibrate" the
battery if you do a full charge-discharge cycle, also, but only some
laptops, not all.


Father Justin wrote:
> Normally I rely on the power of the Holy Spirit. However when the Holy
> Spirit is on vacation I rely on a Lithium Ion battery to power my laptop.
> Do they eventually stop charging? Back in the days of NiCd and NiMH,
> batteries would be able to charge and discharge X number of times.
> Is this still true for LiION? One time I received a usenet tip to reset
> a setting in the laptop's bios, and freeze the battery that wouldn't
> hold a charge. After the battery was frozen for 24 hours, it was
> brought to room temperature, charged and seemed to work fine - including
> holding a charge again. Does that old school trick still work?
>
From: Father Justin on 13 Jan 2010 17:32
On 1/11/10 11:19 PM, Barry Watzman wrote:
> Lithium batteries have a finite number of charge-discharge cycles; the
> number varies but is typically in the mid-hundreds.
>
> You do not have to worry about "memory effect" that was an issue with
> NiCD batteries. In fact, practices that were used with NiCads are
> actually harmful to Lithium batteries.
>
> If the laptop is plugged in all the time, remove the battery. Being
> continuously installed in a laptop that is always plugged in will
> destroy the battery over a period of 6 to 24 months. The culprit is a
> combination of exposure to high temperatures and over charging, but over
> a decade of user experience makes it clear that removing the battery is
> the best thing to do on the vast majority of laptop models. [Note, the
> battery does need to be "exercised" every 60 or 90 days.]

That I didn't know. I consistently wear my Macbook Pro 15" battery to
the brink of shutting down - and charge it overnight.

>
> I've never heard of your freezing trick. I would not recommend that for
> a lithium battery, indeed actually freezing the battery (below 32
> degrees F) will possibly damage it. Some laptops have battery
> calibration software, either in Windows, the BIOS or on a utility
> program, I'd say that most don't. Some laptops will "recalibrate" the
> battery if you do a full charge-discharge cycle, also, but only some
> laptops, not all.

It was a trick to buy some time. I think it only worked once - then it
was time to toss the battery into the closest river.
Bless you, my son.

--
http://www.vatican.va
From: Charlie Hoffpauir on 13 Jan 2010 18:54
On Wed, 13 Jan 2010 17:32:06 -0500, Father Justin
<justin(a)nobecauseihatespam.com> wrote:

<snip>
>It was a trick to buy some time. I think it only worked once - then it
>was time to toss the battery into the closest river.
>Bless you, my son.

Hopefully you are just kidding about the river... I can't think of a
worse place to put a spent battery.
From: the wharf rat on 13 Jan 2010 20:05
In article <n6nsk5dt9bhm2q4ctu0ops2r4f9o7tvf7g(a)4ax.com>,
Charlie Hoffpauir <invalid(a)invalid.com> wrote:
>
>Hopefully you are just kidding about the river... I can't think of a
>worse place to put a spent battery.

Fireplace!


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