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09-03-2017

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Battery Capacity down to 70% after 137 loading cycles P40 Yoga

2017-09-03, 10:00 AM

Hello,

i am using a P40 Yoga and i am not really pleased with its battery runtime. So i checked the battery health in the Lenovo Settings Tool and discovered, that the capacity of the battery is down to 70%.

 

From initially 52,55 Wh there are only 36,91 Wh left, after just 137 loading cycles in about 17 months of rare use...

 

Has anybody else made these observations? Is there a chance to get a replacement battery even if the warranty is expired?

 

Thank you for your feedback

 

Matthias

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109 Posts

09-06-2016

US

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Re: Battery Capacity down to 70% after 137 loading cycles P40 Yoga

2017-09-04, 3:17 AM

I think it looks normal for a Li-Ion battery.

 

Mine (90 Wh / P-50) has lost ~20% capacity in 12 months:

 

 

- There will be some capacity loss over time, regardless of the number of charge cycles

 

- If the capacity loss is excessive (as defined on your warranty agreement), the battery should be replaced. 

 

D.A.V.

________________________________________________________________
P50 - Xeon E3-1535M v5 - 32 GB RAM - FHD display - Quadro M2000M - Win7 x64
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8 Posts

09-03-2017

DE

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Re: Battery Capacity down to 70% after 137 loading cycles P40 Yoga

2017-09-04, 8:40 AM

I don´t think this amount auf capacity loss is normal. Maybe it is typical for cheap li-ion batterys, but if you pay a premium price for a laptop you can expect a decent battery... I never experienced such a decrease in battery life in any other laptop or battery powered device.

 

And Lenovo can do better. I asked a colleague with an X1 Yoga, same age, same initial battery capacity. Now the capacity is about 50 Wh, a loss of just 5%.

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11138 Posts

01-02-2010

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Re: Battery Capacity down to 70% after 137 loading cycles P40 Yoga

2017-09-04, 19:14 PM

A lot of things can affect battery life, like how it is used, how it is charged, even ambient temperature.  If you think your battery has lost capacity too fast, you should try a battery gauge reset, on the Lenovo Settings application.


Rich


I do not respond to requests for private, one-on-one help. Your questions should be posted in the appropriate forum where they may help others as well.

If a response answers your question, please mark it as the accepted solution.

I am not an employee or agent of Lenovo.
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8 Posts

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DE

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Re: Battery Capacity down to 70% after 137 loading cycles P40 Yoga

2017-09-05, 7:46 AM

Yes i know, and for heavy use of the laptop i could understand that capacity loss...

 

I tried a battery gauge reset, it did not change the capacity shown in the Lenovo Settings.

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8 Posts

09-03-2017

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Re: Battery Capacity down to 70% after 137 loading cycles P40 Yoga

2017-09-15, 8:34 AM

Hey i got another question:

 

How do your Thinkpads behave on self-discharge? I made the observation, if i dont use the Laptop for a week or so the battery discharges itself from 100% to 50% or less, while it is shut down and no USB devices attached...

 

Has anyone made similar observations?

 

 

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Re: Battery Capacity down to 70% after 137 loading cycles P40 Yoga

2017-09-15, 16:21 PM

Off doesn't really mean off.  Try turning off rapid boot in windows 10


Rich


I do not respond to requests for private, one-on-one help. Your questions should be posted in the appropriate forum where they may help others as well.

If a response answers your question, please mark it as the accepted solution.

I am not an employee or agent of Lenovo.
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2 Posts

08-24-2017

TR

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Re: Battery Capacity down to 70% after 137 loading cycles P40 Yoga

2018-03-15, 13:07 PM

Hello, I got the same problem with my computer too. Did you get any solutions to improce your battery life or to have it changed? Thanks

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8 Posts

09-03-2017

DE

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Re: Battery Capacity down to 70% after 137 loading cycles P40 Yoga

2018-03-15, 20:11 PM

No, i havent found a solution and it is not getting better.

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4 Posts

02-17-2017

RU

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  • Message 10 of 11

Re: Battery Capacity down to 70% after 137 loading cycles P40 Yoga

2018-04-03, 15:14 PM

Hi there!

My P40 has only 31 Wh (60%) of capacity left after 14 months of usage too. It's kind of lame :(

For comparison, cheapish Acer laptop I bought in 2012 still has 86% battery capacity to these days.

 

I know that some ThinkPads refuse to charge 3rd-party batteries, thanks to Lenovo's battery DRM. (google "Unlocking my Lenovo laptop, part 1" saga)

 

So, I'm curious whether someone had tried replacing the battery on P40/Yoga 460?

And does anyone know where one can get a genuine 00HW020 battery (or at least the one that would charge)?

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