Battery 255 %

[BGR]

Laptop P6661 does not turn on with battery. The battery icon on taskbar shows  - 255 %available. Plugged in. If the charger is plugged off, the laptop shuts down immediately. Purchase a 2 new generic batteries - no success, The red light of battery on laptop panel is flashing when charger is connected.  Web wide ways to solve this issue was done. Nothing works. Somebody could help? Thanks in advance,

[daddle]

@BGR 

Maybe the power board only is the connecting board between power input socket and mainboard. And the intelligent circuit is on the mainboard itself. You should check before ordering the part.

daddle

[daddle]

@BGR 

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@BGR  schrieb:

Laptop P6661 does not turn on with battery. The battery icon on taskbar shows  - 255 %available. Plugged in. If the charger is plugged off, the laptop shuts down immediately. Purchase a 2 new generic batteries - no success, The red light of battery on laptop panel is flashing when charger is connected. 

 For me in the synopsis the batteries you bought are "kaput"t- probably broken. Superimposed and deeply discharged in due to the long time without maintenance. The fact that there is still an open-circuit voltage of ~15 V says nothing about the voltage drop under load.

This is also what the behavior of the charging LED says.

Sorry, dadde

[BGR]

Have checked by multimeter new batteries voltage on the pins - did not found nothing. No any voltage. On the old one on some pins found 2-3 V.  Perhaps the "new" batteries are dead but I guess the problem is not on batteries only. Will research further. Now I need a really working battery for test.Thanks everybody for comments.

[daddle]

@BGR 

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@BGR  schrieb:

Have checked by multimeter new batteries voltage on the pins - did not found nothing. No any voltage. On the old one on some pins found 2-3 V.  

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Sorry to her, but thats what I did presume.

Did you manage in  the meantime to get the Laptop working?

Cheers, daddle

x

[BGR]

I disassembled both two new batteries, both have normal voltage 15,2 V, so I guess the problem is on motherboard power controller. Next step is put out the motherboard and looks for problem. Thanks.

[daddle]

@BGR

You wrote before:

@BGR  schrieb:

Have checked by multimeter new batteries voltage on the pins - did not found nothing. No any voltage.

And now:

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@BGR  schrieb:

I disassembled both two new batteries, both have normal voltage 15,2 V, so I guess the problem is on motherboard power controller. Next step is put out the motherboard and looks for problem. 

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If they do not give any voltage in assembled state out, like you wrote before, then it has nothing to do with the powerboard, because the batteries were not connected to the mainboard.

Disassembling and measuring the single cells having Voltage left, is not not proof enough. Check if the single cells under load (a few Ampere ) keeps the Voltage high.

daddle

[BGR]

I connected directly to battery a load (car halogen bulb, 55 W) and discharged a battery till 8 V. Bulb shined 25 minutes. Then installed battery to laptop and plugged in a charger ant check by multimeter charging voltage on cells - did not found any voltage. Results: the battery is not charging.

[daddle]

@BGR 

You connected the 55 W bulb  directy to a single cell?  One after the other (they only  have about 3.2 V). 

So you did  connect the bulb  to the outllet contacts of the assembled battery in total? Must have been. 

But letting the bulb drain the battery down to 8 Volt  is deeply discharging  the single cells, which are getting damaged by less than 2.4 V.

Divide the 8 V by the amount of cells  (4 cells) , then you know how deeply discharged the single cell  is.

But mostly it doesn't affect the cells equally

A safety  circuit (BMS)) inside the batterie blocks the reloading, if the battery in total  (or some cells) is / are  deeply discharged.

One could try to give a direct higher voltage "shot",  with a bit higher voltage than the regular voltage of the charger offers,  to overcome the  blocking. 

But this is risky, and you should be aware of the risks of fire which are there..

daddle  

[BGR]

No no, I connect the bulb to full battery pack 15,2 V, after disconnecting the bulb battery voltage in 10 minutes rised up to 11 volts. So the cells are ok. I found on youtube some very similar issues fixing videos, where laptops batteries where does not charged, and problem was dead IC voltage controller chip. 

[daddle]

@BGR

You change eveery time yur story. First yoiu wrote :

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@BGR  schrieb:

I connected directly to battery a load (car halogen bulb, 55 W) and discharged a battery till 8 V. Bulb shined 25 minutes. 

 Now you say:

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@BGR  schrieb:

No no, I connect the bulb to full battery pack 15,2 V, after disconnecting the bulb battery voltage in 10 minutes rised up to 11 volts. So the cells are ok. 

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This  is very on the borderline.  Now i cannnot  help any more.  

dadlle

x