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WasifSal
Fanfold Paper
Posts: 6
Registered: ‎08-21-2015
Location: Pakistan
Views: 1,646
Message 1 of 10

Severe Battery Issues in Windows 10 (Lenovo Y40-70)

I will be clear and to the point:


"The Battery gauge is messed up. It never shows how much it ACTUALLY is. Like right now its stuck on 99% when I know it should be less (Since i've been using it alot on battery)"

 

These are the things I did:

1. Reinstalled Windows 10.

2. Disabled Lenovo ACPI Controller and Uninstalled Microsoft ACPI Battery Drivers.

3. NEVER used Lenovo Battery Manager.

 

Please tell me a possible fix other than Downgrading back to Windows 8.1.

Thanks

WasifSal
Fanfold Paper
Posts: 6
Registered: ‎08-21-2015
Location: Pakistan
Views: 1,604
Message 2 of 10

Re: Severe Battery Issues in Windows 10 (Lenovo Y40-70)

UPDATE:

Managed to install Windows 8.1. Battery issues EXACTLY the same here again.
So I'm guessing the Battery's done for.
Can anyone pinpoint as to what might exactly be the issue? Battery or the Charger?

Cannot send back to Lenovo because I bought the laptop from US and using in Pakistan.
Thanks.
Administrator
Administrator
Posts: 5,169
Registered: ‎04-19-2012
Location: SK
Views: 1,601
Message 3 of 10

Re: Severe Battery Issues in Windows 10 (Lenovo Y40-70)

Hi WasifSal,

 

Welcome to the Community,

 

If I understand correctly the problem started after you upgraded to Windows 10? was it working properly before that?

 

 




Miguel Gonzalez
Community Service Readiness, Spanish & Gaming Community Leader

WasifSal
Fanfold Paper
Posts: 6
Registered: ‎08-21-2015
Location: Pakistan
Views: 1,586
Message 4 of 10

Re: Severe Battery Issues in Windows 10 (Lenovo Y40-70)

Yes it was working perfectly. It kind of happened all of a sudden. Since I was tied up to my studies (Medical School sucks) I couldn't fix it then. Now I have some free time.
How can you help me with this? Since no one in the Community responded you are my only hope in this.

Its so sad that a company with such a good repute in making affordable high-end laptops could fail so miserably.

Response appreciated alot. Thanks!
Administrator
Administrator
Posts: 5,169
Registered: ‎04-19-2012
Location: SK
Views: 1,570
Message 5 of 10

Re: Severe Battery Issues in Windows 10 (Lenovo Y40-70)

I would suggest that you go back to windows 8.1,

 

I believe the upgrade was the problem.




Miguel Gonzalez
Community Service Readiness, Spanish & Gaming Community Leader

JonnoOon
Paper Tape
Posts: 4
Registered: ‎09-21-2015
Location: Perth, Australia
Views: 1,557
Message 6 of 10

Re: Severe Battery Issues in Windows 10 (Lenovo Y40-70)

I am having this problem also

 

Was experiencing it in Windows 8, but definitely worse in windows 10

 

Laptop also does not come out of hibernate in Windows 10.

 

Have had 0 support from Lenovo phone as I also bought my laptop in US and now live in Australia .. terrible customer support

PhilBilo15
Punch Card
Posts: 16
Registered: ‎08-26-2015
Location: Saint-Jean-sur-Richelieu
Views: 1,497
Message 7 of 10

Re: Severe Battery Issues in Windows 10 (Lenovo Y40-70)

I will receive my Y40-70 tomorrow with a new battery. Before I reinstalled windows 8 but the problem was never solved. I don't know if I will reinstall Windows 10 ...... But a lenovo technical expert told me that Windows 10 was not suppose to make any change of this kind to your computer.

siddharthsah
Paper Tape
Posts: 3
Registered: ‎03-21-2015
Location: denver
Views: 1,375
Message 8 of 10

Re: Severe Battery Issues in Windows 10 (Lenovo Y40-70)

i have the exactly same problem. the guage is stuck at 99 % all the time and it suddenly goes off. please tel me is there some way that you resolved your problem.

dayaN
What's DOS?
Posts: 1
Registered: ‎12-17-2015
Location: India
Views: 1,292
Message 9 of 10

Re: Severe Battery Issues in Windows 10 (Lenovo Y40-70)

Hello Guys,

 

Any update on this issue so far from Lenovo guys?

Even i am facing this issue, my battery is shows 100% and drops to 10%  in 30 mins and to 0% in another 5 mins and at last goes dead.

Even after doing multiple Gauge resets on windows 10, i dont find any fix or betterment in battery performance.

How can i get a solution for this? Should i get a battery replacemen or is there any software fix fir this battery problem.

Any help appreciated.

 

Reards,

Daya

Former Employee
Posts: 1,664
Registered: ‎09-16-2014
Location: US
Views: 364
Message 10 of 10

Re: Severe Battery Issues in Windows 10 (Lenovo Y40-70)

In response to customer reports of unexpected battery gauge behavior on Y40-70 and Y40-80 laptops, Lenovo determined the battery gauge software is performing as expected. The unusual gauge results being reported are a reflection of the battery reaching end of life.

 

Lenovo has released a Service TIP to assist customers with obtaining battery replacements under warranty, or if out of warranty, to find a replacement battery from Lenovo-approved vendors. The Service TIP can be found here: https://support.lenovo.com/us/en/solutions/sf16-I0023

 

The part numbers for Y40-70/80 batteries are:

Y40 SP/A L13M4P01 7.4V48Wh 4cell bty (Y40-70/Y40-80) 121500248

Y40 LG L13L4P01 7.4V48Wh 4cell bty (Y40-70/Y40-80) 121500249 substitute part 121500251

Y40 CP/C L13C4P01 7.4V48Wh 4cell bty (Y40-70/Y40-80) 121500259 substitute part 121500251

 

To determine which battery came with your Y40 notebook, instructions for removing the bottom cover can be found in the Hardware Maintenance Manual pdf here. An alternate to opening your system (which does not void warranty) is to search for batteries using the model/product number located on the bottom cover.

 

Thank you,

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