iBook battery : decharge fully every time

Is this really good for the battery?
Chris wrote on :
Is this really good for the battery? cos most of the time I use it at my desk.So everytime I use it should I let it decharge fully before recharge to get a good battery life?
Peter Ceresole replied on :

Chris chris.holland16@redacted.invalid wrote:

Is this really good for the battery? cos most of the time I use it at my desk.So everytime I use it should I let it decharge fully before recharge to get a good battery life?

Absolutely not.

This was the case for ancient NiCd technology, where if you repeatedly part-discharged and recharged the battery crystals would form internally and battery capacity would take a dive. Total discharge would avoid this nasty 'memory' effect.

Modern batteries are NiMH. What knackers them is discharging and charging- they last for a limited number of cycles. Best for them is to charge them and keep them fully charged as much as you can. If you use your Boko at your desk, just keep it on charge all the time.

Chris replied on :

peter@redacted.invalid (Peter Ceresole) wrote in message news:1ggmsk6.15zxfu71iitz0cN%peter@redacted.invalid...

Chris chris.holland16@redacted.invalid wrote:

Is this really good for the battery? cos most of the time I use it at my desk.So everytime I use it should I let it decharge fully before recharge to get a good battery life?

Absolutely not.

This was the case for ancient NiCd technology, where if you repeatedly part-discharged and recharged the battery crystals would form internally and battery capacity would take a dive. Total discharge would avoid this nasty 'memory' effect.

Modern batteries are NiMH. What knackers them is discharging and charging- they last for a limited number of cycles. Best for them is to charge them and keep them fully charged as much as you can. If you use your Boko at your desk, just keep it on charge all the time.

Thanks for that info,

Who invented the word Boko? I had never heard of it before reading this newsgroup

David Glover replied on :

"Chris" chris.holland16@redacted.invalid wrote in message news:cd86ae07.0407090426.29b80576@redacted.invalid

Who invented the word Boko? I had never heard of it before reading this newsgroup

[Quick research later]

First usage appears to be by Jon B on April 20.

-> http://tinyurl.com/29qyp

Jon B replied on :

David Glover usenet@redacted.invalid wrote:

"Chris" chris.holland16@redacted.invalid wrote in message news:cd86ae07.0407090426.29b80576@redacted.invalid

Who invented the word Boko? I had never heard of it before reading this newsgroup

[Quick research later]

First usage appears to be by Jon B on April 20.

-> http://tinyurl.com/29qyp

Feck, and we all thought (myself included) that Jim started it, but his first posting of it was on the 24th April allegedly.

Jim replied on :

In article 1ggnvjl.mqj9y196onh9N%jon.bradburyusenetspam@redacted.invalid, Jon B wrote:

David Glover usenet@redacted.invalid wrote:

"Chris" chris.holland16@redacted.invalid wrote in message news:cd86ae07.0407090426.29b80576@redacted.invalid

Who invented the word Boko? I had never heard of it before reading this newsgroup

[Quick research later]

First usage appears to be by Jon B on April 20.

-> http://tinyurl.com/29qyp

Feck, and we all thought (myself included) that Jim started it, but his first posting of it was on the 24th April allegedly.

Mine -was- an independent use of it, albeit an accidental one.

I can claim no ownership to it :-(

Jim

Richard P. Grant replied on :

Jim wrote:

[boko]

Mine -was- an independent use of it, albeit an accidental one.

I can claim no ownership to it :-(

You popularized it. You are the Max Clifford of ucsm.

Jim replied on :

In article ccm87u$j0g$1@redacted.invalid, Richard P. Grant wrote:

Jim wrote:

[boko]

Mine -was- an independent use of it, albeit an accidental one.

I can claim no ownership to it :-(

You popularized it. You are the Max Clifford of ucsm.

er...is that a good thing?

Jim

Jim replied on :

In article ccma41$k8v$3@redacted.invalid, Richard P. Grant wrote:

Jim wrote:

In article ccm87u$j0g$1@redacted.invalid, Richard P. Grant wrote:

Jim wrote:

[boko]

Mine -was- an independent use of it, albeit an accidental one.

I can claim no ownership to it :-(

You popularized it. You are the Max Clifford of ucsm.

er...is that a good thing?

I couldn't possibly comment.

That'd be a first.

Jim

Richard P. Grant replied on :

Jim wrote:

In article ccm87u$j0g$1@redacted.invalid, Richard P. Grant wrote:

Jim wrote:

[boko]

Mine -was- an independent use of it, albeit an accidental one.

I can claim no ownership to it :-(

You popularized it. You are the Max Clifford of ucsm.

er...is that a good thing?

I couldn't possibly comment.

Richard P. Grant replied on :

Jim wrote:

In article ccma41$k8v$3@redacted.invalid, Richard P. Grant wrote:

Jim wrote:

In article ccm87u$j0g$1@redacted.invalid, Richard P. Grant wrote:

Jim wrote:

[boko]

Mine -was- an independent use of it, albeit an accidental one.

I can claim no ownership to it :-(

You popularized it. You are the Max Clifford of ucsm.

er...is that a good thing?

I couldn't possibly comment.

That'd be a first.

OW

I am hurt; deeply, sorely, hurt.

Jim replied on :

In article ccmbu6$m5p$2@redacted.invalid, Richard P. Grant wrote:

Jim wrote:

In article ccma41$k8v$3@redacted.invalid, Richard P. Grant wrote:

Jim wrote:

In article ccm87u$j0g$1@redacted.invalid, Richard P. Grant wrote:

Jim wrote:

[boko]

Mine -was- an independent use of it, albeit an accidental one.

I can claim no ownership to it :-(

You popularized it. You are the Max Clifford of ucsm.

er...is that a good thing?

I couldn't possibly comment.

That'd be a first.

OW

I am hurt; deeply, sorely, hurt.

{evil grin}

Jim

James Dore replied on :

In article ccmbu6$m5p$2@redacted.invalid, rpg14 @redacted.invalid says...

Jim wrote:

In article ccma41$k8v$3@redacted.invalid, Richard P. Grant wrote:

Jim wrote:

In article ccm87u$j0g$1@redacted.invalid, Richard P. Grant wrote:

Jim wrote:

[boko]

Mine -was- an independent use of it, albeit an accidental one.

I can claim no ownership to it :-(

You popularized it. You are the Max Clifford of ucsm.

er...is that a good thing?

I couldn't possibly comment.

That'd be a first.

OW

I am hurt; deeply, sorely, hurt.

Lucky you.

zoara replied on :

Jon B jon.bradburyusenetspam@redacted.invalid wrote:

David Glover usenet@redacted.invalid wrote:

"Chris" chris.holland16@redacted.invalid wrote in message news:cd86ae07.0407090426.29b80576@redacted.invalid

Who invented the word Boko? I had never heard of it before reading this newsgroup

[Quick research later]

First usage appears to be by Jon B on April 20.

-> http://tinyurl.com/29qyp

Feck, and we all thought (myself included) that Jim started it, but his first posting of it was on the 24th April allegedly.


From: Jim (jim@redacted.invalid) Subject: Re: New powerbooks Newsgroups: uk.comp.sys.mac Date: 2004-04-20 04:52:24 PST

"Ok, here goes: The new PowerBokos are very, very shiny!"


http://tinyurl.com/23enl

The Dictioary Archives have this as earlist citation of "...boko" terminology. And they are never wrong (and never published either). Sorry Jon!

    -z-
Jon B replied on :

Who invented the word Boko? I had never heard of it before reading this newsgroup

[Quick research later]

First usage appears to be by Jon B on April 20.

-> http://tinyurl.com/29qyp

Feck, and we all thought (myself included) that Jim started it, but his first posting of it was on the 24th April allegedly.


From: Jim (jim@redacted.invalid) Subject: Re: New powerbooks Newsgroups: uk.comp.sys.mac Date: 2004-04-20 04:52:24 PST

"Ok, here goes: The new PowerBokos are very, very shiny!"


http://tinyurl.com/23enl

The Dictioary Archives have this as earlist citation of "...boko" terminology. And they are never wrong (and never published either). Sorry Jon!

Ah the important factor of not just searching for "i"Boko, did say above was fairly sure it was all Jims fault

Antony Lacey replied on :

Jim jim@redacted.invalid wrote:

[boko]

Mine -was- an independent use of it, albeit an accidental one.

I can claim no ownership to it :-(

You popularized it. You are the Max Clifford of ucsm.

er...is that a good thing?

Depends - if you don't mind looking and acting like an idiot (IMHO of course) then yes.

If not, then probably not.

Jim replied on :

Antony Lacey allatsea@redacted.invalid wrote:

[boko]

Mine -was- an independent use of it, albeit an accidental one.

I can claim no ownership to it :-(

You popularized it. You are the Max Clifford of ucsm.

er...is that a good thing?

Depends - if you don't mind looking and acting like an idiot

As opposed to..?

Jim

Peter Ceresole replied on :

James Dore james.dore@redacted.invalid wrote:

I am hurt; deeply, sorely, hurt.

Lucky you.

So what's with the masochism?

Phil Taylor replied on :

In article cd86ae07.0407081359.28542cef@redacted.invalid, Chris chris.holland16@redacted.invalid wrote:

Is this really good for the battery? cos most of the time I use it at my desk.So everytime I use it should I let it decharge fully before recharge to get a good battery life?

With the older NiCd batteries it was important to discharge them fully before re-charging because they suffered from memory effects. With Lithium ion batteries it does no harm to recharge when they're only half discharged, and probably extends the life compared with putting them through a complete discharge/charge cycle each time.

Phil Taylor

Jim replied on :

Jon B jon.bradburyusenetspam@redacted.invalid wrote:

The Dictioary Archives have this as earlist citation of "...boko" terminology. And they are never wrong (and never published either). Sorry Jon!

Ah the important factor of not just searching for "i"Boko, did say above was fairly sure it was all Jims fault

Most things are, it has to be said.

Jim

Alec McKenzie replied on :

Phil Taylor nothere@redacted.invalid wrote:

With the older NiCd batteries it was important to discharge them fully before re-charging because they suffered from memory effects.

See http://www.repairfaq.org/ELE/F_NiCd_Memory.html

Antony Lacey replied on :

Jim jim@redacted.invalid wrote:

You popularized it. You are the Max Clifford of ucsm.

er...is that a good thing?

Depends - if you don't mind looking and acting like an idiot

As opposed to..?

Looking and acting normal. Whatever normal is. This is a Max Clifford thing - I met him once, and that was enough.

I've also knocked John McCrirrick <sp?> over with a swing door.

D.M. Procida replied on :

Chris chris.holland16@redacted.invalid wrote:

Who invented the word Boko?

I don't know, but the people who keep using it are basically adding garbage to and removing important keywords from what should be a useful, searchable archive.

Daniele

Jim replied on :

D.M. Procida real-not-anti-spam-address@redacted.invalid wrote:

Who invented the word Boko?

I don't know, but the people who keep using it are basically adding garbage to and removing important keywords from what should be a useful, searchable archive.

Oh, lighten up.

Jim

Peter Ceresole replied on :

Jim jim@redacted.invalid wrote:

I don't know, but the people who keep using it are basically adding garbage to and removing important keywords from what should be a useful, searchable archive.

Oh, lighten up.

I think Daniele's got a good point. On the other hand it's rather anti-fun. And as I am rapidly regressing to childhood, I don't like that. I suppose the best solution is to use 'iBoko (iBook)' once each time, or to just include 'iBook' once. That will flag the article for searches.

Peter Ceresole replied on :

Peter Ceresole peter@redacted.invalid wrote:

I suppose the best solution is to use 'iBoko (iBook)' once each time, or to just include 'iBook' once. That will flag the article for searches.

Errrr... Looking at the thread title, of course, that wouldn't be necessary in this case.

Bella Jones replied on :

Peter Ceresole peter@redacted.invalid wrote:

Jim jim@redacted.invalid wrote:

I don't know, but the people who keep using it are basically adding garbage to and removing important keywords from what should be a useful, searchable archive.

Oh, lighten up.

I think Daniele's got a good point. On the other hand it's rather anti-fun. And as I am rapidly regressing to childhood, I don't like that. I suppose the best solution is to use 'iBoko (iBook)' once each time, or to just include 'iBook' once. That will flag the article for searches.

I've been wondering about this myself, especially the other day when someone had to be told to google 'iboko' instead of 'book. After a quick furtle, I see there are about 400 instances of '-boko' in the last three months. But there are a few correct ones too...

Stroller replied on :

On 2004-07-08 22:59:20 +0100, chris.holland16@redacted.invalid (Chris) said:

Is this really good for the battery? cos most of the time I use it at my desk.So everytime I use it should I let it decharge fully before recharge to get a good battery life?

This is an important subject for me, as I've just bought my first laptop. I am aslo having trpuble finding hard facts with which to rely on. Googles for "care of NiMH batteries" and "care of NiMH laptop batteries" produced many results, but none of them struck me as definitive.

I found these statements & would be interested to hear any comments upon them:

Furthermore, unless you have a Li-Ion battery, fully discharging and then fully charging the laptop batteries is a necessity even when they have not new. For those batteries, its a good idea to do this at least every two-three weeks. http://www.laptops-guide.com/laptop-battery.html

NiCad (Nickel Cadmium) and NiMH (Nickel Metal): The main difference between the two is the fact that NiMH batteries (the newer of the two technologies) offer higher energy densities than NiCads. In other words, pound for pound, NiMH delivers approximately twice the capacity of its NiCad counterpart. .. It is important to condition (fully discharge and then fully charge) the battery every two to three weeks. Failure to do so may significantly shorten the battery's life (this does not apply to Li-Ion batteries, which do not require conditioning). To discharge, simply run the device under the battery's power until it shuts down or until you get a low battery warning. Then recharge the battery as instructed in the user's manual. http://www.1800mobiles.com/howtohanbata.html

...I don't think ni-mh batteries should have a place in current notebooks, the advantages of li-ion easily outweigh the extra cost. I don't have a thin & light or ultraportable, but I do care about batterylife, there's no way I would have an ni-mh in my Inspiron 8600, I've had plenty of ni-mh devices including laptops in the past to appreciate li-ion batteries. http://www.anandtech.com/news/shownews.aspx?i=22535

This article also seems to contain some relevant links: http://docs.info.apple.com/article.html?artnum=18241 and a recent thread http://tinyurl.com/5dalv has mentioned http://www.apple.com/batteries/

HTH,

Stroller.

Peter Ceresole replied on :

Stroller stroller@redacted.invalid wrote:

This is an important subject for me, as I've just bought my first laptop. I am aslo having trpuble finding hard facts with which to rely on. Googles for "care of NiMH batteries" and "care of NiMH laptop batteries" produced many results, but none of them struck me as definitive.

In case you were in abyway at all influenced by my saying that the laptops had NiMH cells; they don't. I was wrong- and thinking of an ancient Toshiba I have, now totally irrelevant to Apple laptops.

They all use LiON cells, and according to the Apple info, are happiest if allowed to discharge about once a month, otherwise kept on charge.

Stroller replied on :

peter@redacted.invalid (Peter Ceresole) wrote in message news:1ghp45o.1fmilrhs3lvffN%peter@redacted.invalid...

Stroller stroller@redacted.invalid wrote:

This is an important subject for me, as I've just bought my first laptop. I am aslo having trpuble finding hard facts with which to rely on. Googles for "care of NiMH batteries" and "care of NiMH laptop batteries" produced many results, but none of them struck me as definitive.

In case you were in abyway at all influenced by my saying that the laptops had NiMH cells; they don't. I was wrong- and thinking of an ancient Toshiba I have, now totally irrelevant to Apple laptops.

They all use LiON cells, and according to the Apple info, are happiest if allowed to discharge about once a month, otherwise kept on charge.

Ha! I was ENTIRELY influenced by your posting, sir!

I had already planned to check what was marked on my Powerbooke's battery & Google for "care of XXXX type batteries", and your posting preceded the opportunity to power down the machine by a few hours. I noticed the discrepancy between "modern batteries are NiMH" and Apple's statements right after I posted, and was pleased to find yesterday that mine was a Lion.

Stroller.