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20 Posts

06-04-2015

Estonia

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T460s Sudden death when swiching to battery 2

2017-08-24, 4:40 AM

In my T460s there are 2 internal batteries.

When starting to work with 2 full batteries I get sudden death - just like unpluging battery - every time when first one is used down to 0% and it swiches over to second battery.

After turning device on again it works normally from second battery. Looks like the swiching is faulty.

 

What can I do about this? Can it be solved throug software settings or it is physical issue.

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20 Posts

06-04-2015

Estonia

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Re: T460s Sudden death when swiching to battery 2

2019-05-23, 6:15 AM

My second battery was called back and replaced.

Check with your local representative, maybe your battery is faulty too and needs to be replaced.

It was a 5minute waiting and now everything is OK.

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2 Posts

08-27-2017

Armenia

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Re: T460s Sudden death when swiching to battery 2

2017-08-27, 8:51 AM
Seems to be exactly the same issue for me and does seem to be a recent thing, perhaps August 2017 only
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20 Posts

06-04-2015

Estonia

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Re: T460s Sudden death when swiching to battery 2

2017-08-29, 5:09 AM

Same here. Started just lately.

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20 Posts

06-04-2015

Estonia

33 Signins

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Re: T460s Sudden death when swiching to battery 2

2017-08-29, 5:10 AM

Not happening the other way around. If in whatever reason second battery shall be used first, the swich-over to first one is smooth with no visible feedback.

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2 Posts

09-01-2017

Germany

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Re: T460s Sudden death when swiching to battery 2

2017-09-01, 21:48 PM

Same problem here. It happens in both directions from time to time. Sometimes (everytime?) the battery capacity as reported through ACPI has changed afterwards, i.e. the problem seems to be related to (unexpected?) battery ageing. I used my T460s on a daily basis for 10 month now, charged (on average) every other day, i.e. about 150-200 charging cycles. The reported battery capacities have dropped to 74% and 84% by now. As the battery switching is not managed by the OS, i suspect a solution to the problem would involve machine / battery controller firmware updates.

 

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2 Posts

08-27-2017

Armenia

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Re: T460s Sudden death when swiching to battery 2

2017-09-02, 7:08 AM

I can reset the battery guages in Lenovo settings which has allowed me to change what was being shown as battery health, can you do the same?

 

This actually did fix an issue where it seemed ot be getting confused on battery charging when the machine was relatively new, 1 month or so old.

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1 Posts

09-02-2017

Singapore

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  • Message 7 of 22

Re: T460s Sudden death when swiching to battery 2

2017-09-02, 12:11 PM

I am on a T460s and I've also had the exact same problem. In fact, I've experienced this problem quite a few times in the past few months. Really hoping for a fix soon because the computer has powered off many times while I was in the middle of doing work. 

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2 Posts

09-01-2017

Germany

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Re: T460s Sudden death when swiching to battery 2

2017-09-04, 11:53 AM
Update: the reported capacity of battery2 has "magically" increased from 84% to 94% within the past day. I happend to check this while battery2 was at 8% charging state, and just a minute later the laptop would "die", as the notebook over-estimates the capacity of battery2 and misses to switch over to battery1 in time.
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8 Posts

03-27-2014

Moldova (the Republic of)

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  • Message 9 of 22

Re: T460s Sudden death when swiching to battery 2

2017-10-24, 15:42 PM

What OS are you all using? We've been having our T460s on Windows 7 just shut off, as if they lost power. We haven't looked into the batteries yet, but it only seems to happen on Windows 7, not Windows 10.

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Re: T460s Sudden death when swiching to battery 2

2018-01-09, 20:20 PM

Started a new thread on this, but looks like I'm not the only one.  

 

Lenovo, any ideas?

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