topic Re: Battery 255 % in Notebook / Netbook

Battery 255 %

BGR — Sat, 18 Jan 2025 12:01:09 GMT

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,

Re: Battery 255 %

daddle — Sat, 18 Jan 2025 13:28:54 GMT

@BGR

You should at least state the MSN number of your Laptop.

Second: 255% charging status I have never heard of. It indicates the charging circuit on the board seems to be defect (just a guess).

The fact that with two batteries replaced the same occurs.

What do you mean t with:

" Purchase a 2 new generic batteries - no success " so no orig. batteries from Medion?

Did you check the amperage the Charger delivers? It could be defective.

daddle

Re: Battery 255 %

BGR — Sat, 18 Jan 2025 14:59:55 GMT

Hi, thanks for reply. The laptop's MSN 30020565. Sure I bought non original Medion batteries. The charger is OK, another laptop charges well.

Re: Battery 255 %

daddle — Sat, 18 Jan 2025 15:07:13 GMT

@BGR

Sure the non original batteries have same spec as the original ones?

So the only thing you could do ist replacing the power board:

https://www.medion.com/medionserviceshop/de/p/gehause-medion-erazer-p6661-md-99953--be-30020565

Scroll down, then you scroll down, then you see the powerboard entry:

--> https://www.medion.com/medionserviceshop/de/p/div-boards-power-switch-board-40057127

daddle

Re: Battery 255 %

BGR — Sat, 18 Jan 2025 15:30:21 GMT

Thanks for links.

Yeah, the specifications of batteries are the same like original one.

It is a link: https://www.ebay.de/itm/335457195062?_skw=medion+p6661+akku&itmmeta=01JHX0GH1VNWGKKKNNAYEQYBQ9&hash=item4e1ace9436:g:rGEAAOSwGMBme7AO&itmprp=enc%3AAQAJAAAA8HoV3kP08IDx%2BKZ9MfhVJKnI2ZRLbE2B2X5Z5N0n60JdsLXCwkcicIfQWIpvdDwyi7ZvlLeRSYgFeF9llrU49A55pg3m6xrLCVUaFI1NQI9rkuwNnB9bTQHQzWZK3yrZMhlMQgIvrL%2BAHN7rmEtQJtojU1b96y4p3Oe5Tpvg%2F2Z7J19luLMtNjZqBiyHOIivDLZOU2QJhidIDSSDTMGj32BiD18bFmQ8Jjq5Sj943sHyIFvVfkll6cdOwpT%2BmPNJm2BLMr7EH7nvZgsULru8nx%2BD5tSEO9EEdJNrQSBMNKryuVnC2kVjwMzK9%2FUKq4e0lA%3D%3D%7Ctkp%3ABk9SR5yRwqCPZQ

Re: Battery 255 %

Fishtown — Sat, 18 Jan 2025 15:33:34 GMT

hello @BGR and welcome
Please check the volts of the old battery with your current one.
The A41-D15 44Kh battery was delivered/operated with 15.2 volts or 11.4 volts in some models

bye Fishtown

Re: Battery 255 %

BGR — Sat, 18 Jan 2025 15:43:57 GMT

The laptop runs well when charger is plugged in. Do you really think the problem could be on power board?

Re: Battery 255 %

BGR — Sat, 18 Jan 2025 15:47:37 GMT

Batteries voltage 15,2 V.

Re: Battery 255 %

BGR — Sat, 18 Jan 2025 15:56:20 GMT

Re: Battery 255 %

BGR — Sat, 18 Jan 2025 17:00:44 GMT

I guess the problem is on motherboard power controller chip.

Re: Battery 255 %

daddle — Sat, 18 Jan 2025 17:30:13 GMT

@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

Re: Battery 255 %

daddle — Sun, 19 Jan 2025 17:13:11 GMT

@BGR

@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

Re: Battery 255 %

BGR — Tue, 21 Jan 2025 17:37:37 GMT

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.

Re: Battery 255 %

daddle — Sun, 02 Mar 2025 18:09:59 GMT

@BGR

@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.

Sorry to her, but thats what I did presume.

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

Cheers, daddle

Re: Battery 255 %

BGR — Sat, 08 Mar 2025 08:14:26 GMT

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.

Re: Battery 255 %

daddle — Sat, 08 Mar 2025 21:01:06 GMT

@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:

@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.

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

Re: Battery 255 %

BGR — Sun, 09 Mar 2025 07:40:41 GMT

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.

Re: Battery 255 %

daddle — Sun, 09 Mar 2025 12:06:18 GMT

@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

Re: Battery 255 %

BGR — Sun, 09 Mar 2025 13:10:44 GMT

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.

Re: Battery 255 %

daddle — Sun, 09 Mar 2025 13:24:03 GMT

@BGR

You change eveery time yur story. First yoiu wrote :

@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:

@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.

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

dadlle