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iBook 12" battery fooled

Message #1 - Posted 2003/11/18 - eurema

Hi,

Starting with a full charge, my iBook work about 10 mn, battery charge dropping to 96%. Then iBook shut off.
After plugin of the battery charger, charge level rise about 4% in 30 mn then switch instantly to 100%.

___ ____
\ | \ 96%

4%

/

__/

This is repeated every time I switch from battery to charger . I think the battery chip manager is wrongly interpreting the charge drop or rise. I've tried every battery management help including reset-nvram, full discharge and low charge, battery chip reset; nothing help. I'm waiting for a new battery and planned to analyse the inside of the old one. Every help would be appreciated (schematic drawing , etc..) Battery (&iBook) is only two years old and
I can't believe such technical product could stop functionning. Did somebody received some help from Apple for such problem. gege

Message #2 - Posted 2003/11/18 - Peter Renzland

Previously, eurema wrote:

Hi,

Starting with a full charge, my iBook work about 10 mn, battery charge dropping to 96%. Then iBook shut off.
After plugin of the battery charger, charge level rise about 4% in 30 mn then switch instantly to 100%.

___ ____
\ | \ 96%

4%

/

__/

This is repeated every time I switch from battery to charger . I think the battery chip manager is wrongly interpreting the charge drop or rise. I've tried every battery management help including reset-nvram, full discharge and low charge, battery chip reset; nothing help. I'm waiting for a new battery and planned to analyse the inside of the old one. Every help would be appreciated (schematic drawing , etc..) Battery (&iBook) is only two years old and
I can't believe such technical product could stop functionning. Did somebody received some help from Apple for such problem. gege

You'll probably be able to rejuvenate your battery with a way I worked out . . .

Try this:

0. In Terminal: ioreg -p IODeviceTree -n battery -w0 | grep Bat Please note the Capacity before you do anything.

1. Fully charge the battery
2. turn off/down everything and run nothing, turn display right off and unplug it. (first set sleep to never)
LEAVE IT ALONE until it force-sleeps
3. plug in and charge fully (after about 5 minutes, check the Capacity.

4. TELL ME the two Capacity measurements.

If you want to know more, google groups battery && renzland in this newsgroup and/or ask for my awk script batmon.

Salut,

-- Peter

Message #3 - Posted 2003/11/18 - John Johnson

Previously, eurema wrote:

Hi,

Starting with a full charge, my iBook work about 10 mn, battery charge dropping to 96%. Then iBook shut off.
After plugin of the battery charger, charge level rise about 4% in 30 mn then switch instantly to 100%.

___ ____
\ | \ 96%

4%

/

__/

This is repeated every time I switch from battery to charger . I think the battery chip manager is wrongly interpreting the charge drop or rise. I've tried every battery management help including reset-nvram, full discharge and low charge, battery chip reset; nothing help. I'm waiting for a new battery and planned to analyse the inside of the old one. Every help would be appreciated (schematic drawing , etc..) Battery (&iBook) is only two years old and
I can't believe such technical product could stop functionning. Did somebody received some help from Apple for such problem. gege

1. This sort of question comes up often in this group. Search an archive site (e.g. google groups) for more information.

2. I'm not sure just what "planned to analyse the inside of the old one." means, but be certain that you know the risks involved in opening up a Lithium battery before you go ahead. Lithium is a VERY reactive element, and improper handling can result in explosion and/or fire. I apologize if you kow this, and have the skills and equipment to do this sort of work safely; many people don't, and the potential for injury is certainly present.

Message #4 - Posted 2003/11/19 - eurema

Thank for the advert, I just planned to analyse the electronic part of the charger (chips & other components) to estimate if something could be adjusted (trickle charge, discharge, trigger levels etc..) May be they are hard or soft coded in silicium and not accessible or they are adjusted with passive components.

gege

John Johnson a Ècrit:

Previously, eurema wrote:

Hi,

Starting with a full charge, my iBook work about 10 mn, battery charge dropping to 96%. Then iBook shut off.
After plugin of the battery charger, charge level rise about 4% in 30 mn then switch instantly to 100%.

___ ____
\ | \ 96%

4%

/

__/

This is repeated every time I switch from battery to charger . I think the battery chip manager is wrongly interpreting the charge drop or rise. I've tried every battery management help including reset-nvram, full discharge and low charge, battery chip reset; nothing help. I'm waiting for a new battery and planned to analyse the inside of the old one. Every help would be appreciated (schematic drawing , etc..) Battery (&iBook) is only two years old and
I can't believe such technical product could stop functionning. Did somebody received some help from Apple for such problem. gege

1. This sort of question comes up often in this group. Search an archive site (e.g. google groups) for more information.

2. I'm not sure just what "planned to analyse the inside of the old one." means, but be certain that you know the risks involved in opening up a Lithium battery before you go ahead. Lithium is a VERY reactive element, and improper handling can result in explosion and/or fire. I apologize if you kow this, and have the skills and equipment to do this sort of work safely; many people don't, and the potential for injury is certainly present.

Message #5 - Posted 2003/11/20 - kmc

I've been meaning to reply to the following that you posted a month or so ago - it worked for me! Very relieved - I'm actually able to run the iBook off battery while surfing the net. Can't remember exactly the capacity, but it was shockingly in the hundreds and the depletion thing it made it to over 2500 (not perfect, but it runs for hours now).

Thanks for that - I'll do it every few months or so.

You'll probably be able to rejuvenate your battery with a way I worked out . . .

Try this:

0. In Terminal: ioreg -p IODeviceTree -n battery -w0 | grep Bat Please note the Capacity before you do anything.

1. Fully charge the battery
2. turn off/down everything and run nothing, turn display right off and unplug it. (first set sleep to never)
LEAVE IT ALONE until it force-sleeps
3. plug in and charge fully (after about 5 minutes, check the Capacity.

4. TELL ME the two Capacity measurements.

If you want to know more, google groups battery && renzland in this newsgroup and/or ask for my awk script batmon.

Salut,

-- Peter

Message #6 - Posted 2003/11/19 - az_dude

I and several others on the Apple discussion boards have experienced this exact SAME problem. Basically the consensus has been "Take it to an Apple Store and get a replacement." They gave me one with little hassle, on the spot.

-azdude

"eurema" <eurema@wanadoo.fr> wrote in message news:3FB9CFEF.8000707@wanadoo.fr...

Hi,

Starting with a full charge, my iBook work about 10 mn, battery charge dropping to 96%. Then iBook shut off.
After plugin of the battery charger, charge level rise about 4% in 30 mn then switch instantly to 100%.

___ ____
\ | \ 96%

4%

/

__/

This is repeated every time I switch from battery to charger . I think the battery chip manager is wrongly interpreting the charge drop or rise. I've tried every battery management help including reset-nvram, full discharge and low charge, battery chip reset; nothing help. I'm waiting for a new battery and planned to analyse the inside of the old one. Every help would be appreciated (schematic drawing , etc..) Battery (&iBook) is only two years old and
I can't believe such technical product could stop functionning. Did somebody received some help from Apple for such problem. gege

Message #7 - Posted 2003/11/20 - Peter Renzland

After 2+ years? My Apple store offered me a new battery
on the spot as well. They also offered to take my $200. :-)

-- Peter (Toronto)

Previously, az_dude wrote:

I and several others on the Apple discussion boards have experienced this exact SAME problem. Basically the consensus has been "Take it to an Apple Store and get a replacement." They gave me one with little hassle, on the spot.

-azdude

"eurema" <eurema@wanadoo.fr> wrote in message news:3FB9CFEF.8000707@wanadoo.fr...

Hi,

Starting with a full charge, my iBook work about 10 mn, battery charge dropping to 96%. Then iBook shut off.
After plugin of the battery charger, charge level rise about 4% in 30 mn then switch instantly to 100%.

___ ____
\ | \ 96%

4%

/

__/

This is repeated every time I switch from battery to charger . I think the battery chip manager is wrongly interpreting the charge drop or rise. I've tried every battery management help including reset-nvram, full discharge and low charge, battery chip reset; nothing help. I'm waiting for a new battery and planned to analyse the inside of the old one. Every help would be appreciated (schematic drawing , etc..) Battery (&iBook) is only two years old and
I can't believe such technical product could stop functionning. Did somebody received some help from Apple for such problem. gege

Message #8 - Posted 2003/11/20 - az_dude

Good point. It happened to me after 11 months.

Just goes to show how "worth it" AppleCare is. I would never buy an Apple laptop w/o AppleCare. Desktop, sure.

-azdude

"Peter Renzland" <phr0206@sympatico.ca> wrote in message news:n1Xub.14352$ZF1.1330475@news20.bellglobal.com...

After 2+ years? My Apple store offered me a new battery on the spot as well. They also offered to take my $200. :-)

-- Peter (Toronto)

Previously, az_dude wrote:

I and several others on the Apple discussion boards have experienced

this

exact SAME problem. Basically the consensus has been "Take it to an

Apple

Store and get a replacement." They gave me one with little hassle, on

the

spot.

-azdude

"eurema" <eurema@wanadoo.fr> wrote in message news:3FB9CFEF.8000707@wanadoo.fr...

Hi,

Starting with a full charge, my iBook work about 10 mn, battery charge dropping to 96%. Then iBook shut off.
After plugin of the battery charger, charge level rise about 4% in 30

mn

then switch instantly to 100%.

___ ____
\ | \ 96%

4%

/

__/

This is repeated every time I switch from battery to charger . I think the battery chip manager is wrongly interpreting the charge

drop

or rise. I've tried every battery management help including

reset-nvram,

full discharge and low charge, battery chip reset; nothing help. I'm waiting for a new battery and planned to analyse the inside of the old one. Every help would be appreciated (schematic drawing , etc..) Battery (&iBook) is only two years old and
I can't believe such technical product could stop functionning. Did somebody received some help from Apple for such problem. gege

Message #9 - Posted 2003/11/25 - Peter Renzland

Glad to hear it! Thanks for the report. -- Peter

Previously, kmc wrote:

I've been meaning to reply to the following that you posted a month or so ago - it worked for me! Very relieved - I'm actually able to run the iBook off battery while surfing the net. Can't remember exactly the capacity, but it was shockingly in the hundreds and the depletion thing it made it to over 2500 (not perfect, but it runs for hours now).

Thanks for that - I'll do it every few months or so.

You'll probably be able to rejuvenate your battery with a way I worked out . . .

Try this:

0. In Terminal: ioreg -p IODeviceTree -n battery -w0 | grep Bat Please note the Capacity before you do anything.

1. Fully charge the battery
2. turn off/down everything and run nothing, turn display right off and unplug it. (first set sleep to never)
LEAVE IT ALONE until it force-sleeps
3. plug in and charge fully (after about 5 minutes, check the Capacity.

4. TELL ME the two Capacity measurements.

If you want to know more, google groups battery && renzland in this newsgroup and/or ask for my awk script batmon.

Salut,

-- Peter

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