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2 Posts

06-30-2018

CA

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Dual battery wrong percentage?

2018-06-30, 16:59 PM

I have the T580, brand new. With the internal and external battery on the back.

 

Not sure which is which on the Windows' battery monitor, but one battery will drain down to 5%, then it'll switch to the other battery.

 

However, it reports wrong? Which causes Windows to start battery saver mode.

 

Example below... why is it reporting 24% when Battery 1 has 51%. I really don't like the battery saver kicking in when theres enough left...

 

Thanks!

 

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1898 Posts

07-22-2010

US

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Re: Dual battery wrong percentage?

2018-06-30, 19:42 PM

I think its calculating total capacity and available power between the 2 batteries.  Thats what happens on my TP25.  For example if battery one was at 100% and battery 2 was at 50%.  It would show 75%.

 


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 I do not work for, nor do I speak for Lenovo. I will not respond to unsolicited private messages. Questions belong in the forum so it may   help other forum members as well.
T14, T490, TP 25 Retro, X1 Yoga 3rd Gen, W510 850 EVO, A30p
 Retired 385D, A20p, A21p


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2 Posts

06-30-2018

CA

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Re: Dual battery wrong percentage?

2018-06-30, 19:54 PM

Thanks, that makes more sense. Any way to tell which battery is which?

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1898 Posts

07-22-2010

US

9835 Signins

164737 Page Views

  • Posts: 1898
  • Registered: ‎07-22-2010
  • Location: US
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Re: Dual battery wrong percentage?

2018-06-30, 21:25 PM

See if below post helps you.

 

https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/T470-battery-naming/m-p/4088674

 


 If a post answers your question, please mark it as an”Accepted Solution“!
 If a post helps you, please click the star to give it a "Kudo"!


 I do not work for, nor do I speak for Lenovo. I will not respond to unsolicited private messages. Questions belong in the forum so it may   help other forum members as well.
T14, T490, TP 25 Retro, X1 Yoga 3rd Gen, W510 850 EVO, A30p
 Retired 385D, A20p, A21p


Using Browser Search to find your answers in Lenovo and Moto Community

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38 Posts

07-19-2018

CZ

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Re: Dual battery wrong percentage?

2018-08-10, 14:34 PM

I have the same problem on my T480 but Lenovo are not able to reproduce it:

 

https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/Windows-shows-wrong-battery-percentage-on-T480/m-p/4169377/highlight/false#M127209

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