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iBook battery : decharge fully every time

Message #1 - Posted 2004/07/08 - Chris

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?

Message #2 - Posted 2004/07/09 - Peter Ceresole

Chris 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. --
Peter

Message #3 - Posted 2004/07/09 - Chris

peter@cara.demon.co.uk (Peter Ceresole) wrote in message news:<1ggmsk6.15zxfu71iitz0cN%peter@cara.demon.co.uk>...

Chris 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

Message #4 - Posted 2004/07/09 - David Glover

"Chris" <chris.holland16@btopenworld.com> wrote in message news:cd86ae07.0407090426.29b80576@posting.google.com...

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

Message #5 - Posted 2004/07/09 - Jon B

David Glover wrote:

"Chris" <chris.holland16@btopenworld.com> wrote in message news:cd86ae07.0407090426.29b80576@posting.google.com...

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.

Jon
Remove "usenetspam" from address above to reply

Message #6 - Posted 2004/07/09 - Jim

Previously, Jon B wrote:

David Glover wrote:

"Chris" <chris.holland16@btopenworld.com> wrote in message news:cd86ae07.0407090426.29b80576@posting.google.com...

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

Find me at http://www.ursaMinorBeta.co.uk "Brace yourself, this might make your eyes water."

Message #7 - Posted 2004/07/09 - Richard P. Grant

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.

Richard P. Grant 0x5F9559B1 MRC Lab of Mol Biol rpg 'at' mrc-lmb.cam.ac.uk http://www.rg-d.com/BioLOG/ We are the Knights Who Spell "it's" - Peter Ceresole in ucsm

Message #8 - Posted 2004/07/09 - Jim

Previously, 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

Find me at http://www.ursaMinorBeta.co.uk "Brace yourself, this might make your eyes water."

Message #9 - Posted 2004/07/09 - Jim

Previously, Richard P. Grant wrote:

Jim wrote:

Previously, 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

Find me at http://www.ursaMinorBeta.co.uk "Brace yourself, this might make your eyes water."

Message #10 - Posted 2004/07/09 - Richard P. Grant

Jim wrote:

Previously, 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 0x5F9559B1 MRC Lab of Mol Biol rpg 'at' mrc-lmb.cam.ac.uk http://www.rg-d.com/BioLOG/ Grant RP & Murray S. It's green with a pink bit. Nature 2004;78:45-9. - Nigel Eastmond

Message #11 - Posted 2004/07/09 - Richard P. Grant

Jim wrote:

Previously, Richard P. Grant wrote:

Jim wrote:

Previously, 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*.

Richard P. Grant 0x5F9559B1 MRC Lab of Mol Biol rpg 'at' mrc-lmb.cam.ac.uk http://www.rg-d.com/BioLOG/

'Sir, you are depraved and perverted.' - RMcD in ucsm

Message #12 - Posted 2004/07/09 - Jim

Previously, Richard P. Grant wrote:

Jim wrote:

Previously, Richard P. Grant wrote:

Jim wrote:

Previously, 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

Find me at http://www.ursaMinorBeta.co.uk "Brace yourself, this might make your eyes water."

Message #13 - Posted 2004/07/09 - James Dore

Previously, rpg14 @yahoo.co.uk.invalid says...

Jim wrote:

Previously, Richard P. Grant wrote:

Jim wrote:

Previously, 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.

James Dore,
IT Officer,
New College
james.dore@new / it-support@new

Message #14 - Posted 2004/07/09 - zoara

Jon B wrote:

David Glover wrote:

"Chris" <chris.holland16@btopenworld.com> wrote in message news:cd86ae07.0407090426.29b80576@posting.google.com...

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@odin.magrathea.local)
Subject: Re: New powerbooks
Newsgroups: uk.comp.sys.mac
Date: 2004-04-20 04:52:24 PST

"Ok, here goes: <ahem> 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-

"Analogies are like Vegemite sandwiches in a paper bag." -- PeterD, uk.comp.sys.mac

Message #15 - Posted 2004/07/09 - Jon B

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@odin.magrathea.local)
Subject: Re: New powerbooks
Newsgroups: uk.comp.sys.mac
Date: 2004-04-20 04:52:24 PST

"Ok, here goes: <ahem> 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

Jon
Remove "usenetspam" from address above to reply

Message #16 - Posted 2004/07/09 - Antony Lacey

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?

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

If not, then probably not.

Antony
Pull the plug to reply.

Message #17 - Posted 2004/07/09 - Jim

Antony Lacey 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

Find me at http://www.ursaminorbeta.co.uk AIM/iChatAV: JCAndrew2 "We deal in the moral equivalent of black holes, where the normal laws of right and wrong break down; beyond those metaphysical event horizons there exist ... special circumstances" - Use Of Weapons

Message #18 - Posted 2004/07/09 - Peter Ceresole

James Dore wrote:

I am *hurt*; deeply, sorely, *hurt*.

Lucky you.

So what's with the masochism?

Peter

Message #19 - Posted 2004/07/09 - Phil Taylor

Previously, Chris 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

Message #20 - Posted 2004/07/09 - Jim

Jon B 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

jim@magrathea.plus.com AIM/iSight:JCAndrew2 - Log in and say 'hi' "We deal in the moral equivalent of black holes, where the normal laws of right and wrong break down; beyond those metaphysical event horizons there exist ... special circumstances" - Use Of Weapons

Message #21 - Posted 2004/07/09 - Alec McKenzie

Phil Taylor 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

Alec McKenzie
mckenzie@despammed.com

Message #22 - Posted 2004/07/09 - Antony Lacey

Jim 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.

Antony
Pull the plug to reply.

Message #23 - Posted 2004/07/10 - D.M. Procida

Chris 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

Apple Juice Ltd
Chapter Arts Centre
Market Road www.apple-juice.co.uk Cardiff CF5 1QE 029 2019 0140

Message #24 - Posted 2004/07/10 - Jim

D.M. Procida 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

Find me at http://www.ursaminorbeta.co.uk AIM/iChatAV: JCAndrew2 "We deal in the moral equivalent of black holes, where the normal laws of right and wrong break down; beyond those metaphysical event horizons there exist ... special circumstances" - Use Of Weapons

Message #25 - Posted 2004/07/10 - Peter Ceresole

Jim 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

Message #26 - Posted 2004/07/10 - Peter Ceresole

Peter Ceresole 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.

Peter

Message #27 - Posted 2004/07/10 - Bella Jones

Peter Ceresole wrote:

Jim 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...

bellajonez at yahoo dot co dot uk

Message #28 - Posted 2004/07/28 - Stroller

On 2004-07-08 22:59:20 +0100, 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.

Message #29 - Posted 2004/07/29 - Peter Ceresole

Stroller 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. --
Peter

Message #30 - Posted 2004/07/29 - Stroller

peter@cara.demon.co.uk (Peter Ceresole) wrote in message news:<1ghp45o.1fmilrhs3lvffN%peter@cara.demon.co.uk>...

Stroller 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.

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