Is Calibration possible in this case ?

[jiroy]

I replaced a six packs batteries from a Lenovo battery to a Toshiba P205's ones . I did it cause i know the Lenovo one was brand new when its laptop went crappy and , to get benefit of it as it weren't sold since long time .

Now , in the process , the two batteries has the same voltages and capacity , and i was very careful switching their logic boards .
In results , the battery charge normally within one hour to one hour and half , but the problem appear when i pull out the adapter . The battery then notify 6% remaining in less than ten minutes . You can say here that batteries are probably damaged , but when i ignore the message and remove the option of shutting on low level battery , the battery reach an excellent time of 2 hours at least , indicating the batteries are new . I tried many calibration methods but nothing succeed to suppress the windows message of 6% , which is the only handicap here .. Any suggestions ?.

[capwizard]

Re: Is Calibration possible in this case ?

jiroy: "and i was very careful switching their logic boards . " ........including the small black dot thermocouple ?

Most Laptop battery has tiny mircocontraller, which knows how long, and how many times has been charged on this battery, date it made, so you need to reset mircocontraller eeprom memory.

[jiroy]

Re: Is Calibration possible in this case ?

jiroy: "and i was very careful switching their logic boards . " ........including the small black dot thermocouple ?

Most Laptop battery has tiny mircocontraller, which knows how long, and how many times has been charged on this battery, date it made, so you need to reset mircocontraller eeprom memory.

capwizard; What i meant by careful is keeping an external voltage source until the board was switched . There's no micro-controller in those a little bit old ones .
I was mostly thinking if someone has a software that can do the job .

[stj]

Re: Is Calibration possible in this case ?

i think there is a microcontroller, but some suicide if they lose power.

[jiroy]

Re: Is Calibration possible in this case ?

i think there is a microcontroller, but some suicide if they lose power.

I kept an external source voltage , as for micro controller , if there is , then i'll have to remove a thick black coating , maybe doing damages .. Any other ways , like a software ?

[stj]

Re: Is Calibration possible in this case ?

there is software, but it only reads for free.
you have to register it to write any changes

and no, i cant remember what it's called.

[jiroy]

Re: Is Calibration possible in this case ?

there is software, but it only reads for free.
you have to register it to write any changes

and no, i cant remember what it's called.

The same is happening here , flashbacks since long ago , in some very distant memories , lol ..Thanks stj;

[diif]

Re: Is Calibration possible in this case ?

Any use Jiroy ?

[jiroy]

Re: Is Calibration possible in this case ?

Any use Jiroy ?

At this point diff , yes , Anything is useful , especially high techniques like this article . Although i know deeply what i will read , but it may shed lights .

You know diff ? , what i'm thinking of right now , if i didn't find a good software , then i'll be tempering with the two thermo-couples positions , some microns only.

[gabiz_ro]

Re: Is Calibration possible in this case ?

One software could be be2works,but need to pay
First check if support your battery.

Other usefull software,for monitoring is batmon or battery monitor from passmark

Also you could have (if laptop is older) some BQ series controller with external eeprom,then you may edit eeprom if datasheet for BQ is available.

One trick used once or twice was to charge elements directly (I mean charge them from opened battery case)
Controller see only discharging current and since voltage was enough keep running few cycles as result battery health increased.
Or let say you have packs of three in series,that is 12.6V full charged.
Charge battery,apply good power source with 12V and enough current on pack terminal and let laptop run from battery ( in fact mixed source,battery pack and external power source) for some time,long enough.
Controller will measure what is drawn but in the end since power is drown and drown but still available maybe will reset stored values.
You can check this with batmon,if can read battery.
There are two values,design capacity,that means what was with new battery and acual capacity,what controller know about battery wear level.

[jiroy]

Re: Is Calibration possible in this case ?

One software could be be2works,but need to pay
First check if support your battery.

Other usefull software,for monitoring is batmon or battery monitor from passmark

Also you could have (if laptop is older) some BQ series controller with external eeprom,then you may edit eeprom if datasheet for BQ is available.

One trick used once or twice was to charge elements directly (I mean charge them from opened battery case)
Controller see only discharging current and since voltage was enough keep running few cycles as result battery health increased.
Or let say you have packs of three in series,that is 12.6V full charged.
Charge battery,apply good power source with 12V and enough current on pack terminal and let laptop run from battery ( in fact mixed source,battery pack and external power source) for some time,long enough.
Controller will measure what is drawn but in the end since power is drown and drown but still available maybe will reset stored values.
You can check this with batmon,if can read battery.
There are two values,design capacity,that means what was with new battery and acual capacity,what controller know about battery wear level.

Nice ideas there .. I'll be trying them tonight and report tomorrow , i'll leave the software for after it for now .. Thanks gabiz_ro

[capwizard]

Re: Is Calibration possible in this case ?

Battery Firmware Hacking........... Nice one. Can I use this Principle Theory to hack ATM machine?

First I will need a Saleae logic analyzer, I've had experience with HP logic analyzer, of which is pretty expensive, will that help?.....

PS: diif you will get half. Thanks for the information.

[jiroy]

Re: Is Calibration possible in this case ?

Battery Firmware Hacking........... Nice one. Can I use this Principle Theory to hack ATM machine?

First I will need a Saleae logic analyzer, I've had experience with HP logic analyzer, of which is pretty expensive, will that help?.....

PS: diif you will get half. Thanks for the information.

Although a joke , but simply , you cannot hack what is yours . In this case , i can even say they hacked me , lool

[jiroy]

Re: Is Calibration possible in this case ?

No success , till now . A work around for the time being , i lowered the low level battery in power options to 5% .. Temporary solution .

[jiroy]

Re: Is Calibration possible in this case ?

Back to experimenting in Laptop batteries , and this time in an Acer Travelmate 250's one . The battery shows 1% , available and charging , but stuck at that point . If charger is removed , the Laptop immediately shut down .
After cutting the battery open , i found one pack (the middle one , as usual ) out of three at 0 Volts . The remaining two were very good at 3.7 volts each .
From another damaged battery , i took one good pack , and replaced the damaged ones . The battery shows now 1% and charging , stuck , but the Laptop doesn't power of , so now , there are in priority order 3 options to think of :

1- Waiting for the SPS (Sleeping Princess symptom ) to take effects .

2- Calibrating .

3- Acquiring the laptop's original Adapter .

Will report ..

[stj]

Re: Is Calibration possible in this case ?

leave it running on battery's till it dies.
then charge it.

that sometimes makes the battery ic calibrate itself.

[jiroy]

Re: Is Calibration possible in this case ?

leave it running on battery's till it dies.
then charge it.

that sometimes makes the battery ic calibrate itself.

Yep stj; It has been an hour or so that i pulled out the adapter , and the battery still powering ...

[stj]

Re: Is Calibration possible in this case ?

better life than any of mine then!

[jiroy]

Re: Is Calibration possible in this case ?

better life than any of mine then!

It isn't even over yet , lol ...

[jiroy]

Re: Is Calibration possible in this case ?

It's 8 AM in Lebanon , I left the laptop 12 hours ago , and the battery is still powering the Acer's Vista Premium , lol .. Of course , being idle and hibernating , it managed to stay on .
Now i need to Zero the battery once and for all , so i'll play and rewind some medias hoping it will drain .