04-03-2019 09:51 AM
On a few previous occasions, while running my Lenovo Thinkpad T480 running Windows 10 (10.0.17134 Build 17134), it shuts down without any prior notice nor warning, loosing any unsaved data. Each time it occurred, the machine started up just fine when powering on, still on battery only.
It wasn't until today that I came to learn the reasoning. Prior before the unexpected shutdown, I had seen that Battery 1 was at 5%, and Battery 2 at around 80%. Minutes later, the laptop turned off without any warnings.
Once rebooted and still running on batteries only (not plugged in), the battery status shows:
In other words, my laptop does not switch over to the secondary battery as soon as the first one runs out of juice. I have searched the forums but could not find any previous reporting of the same, so any advise how to troubleshoot this behavior? I'd really like to get this fixed as each time this occurs, I risk loosing any unsaved data.
Solved! Go to Solution.
04-03-2019 12:34 PM
Yup ... same exact issue with my T480.
I've posted this fix to several other threads:
The windows 10 - 1803 update screwed up a lot of Thinkpads with two batteries.
So, I can see no downside to trying this fix, it fixed my T480 with dual batteries:
I may have some extra unnecessary steps in here, but I wanted to be sure I didn't screw it up:
04-06-2019 11:55 AM
Thanks a ton for the detailed explanation. I implemented the solution earlier this week and yes, that seems to have solved the issue. Kudos to you!
04-07-2019 06:31 AM
weird issue ...
glad this fixed it ....
the dual battery system does not work the way that it should..................
06-05-2019 06:41 AM
I just tried this and it does show (2) batteries in the windows section, previously I only saw the one and when my main battery died I had to start up manually for the second battery to run.
Hopefully this fixes it.
Thanks a million for the suggestion and good detail, it's a great feature to have - if it works.
10-26-2019 12:12 AM
Thank you so much for your detailed explanation!!! It really helped. i was so dissappointed with a brand new t480 which i dreamt about for so long. Your help solved the situation so quickly!!!
10-30-2019 07:37 AM
I've tried several times the steps described and it didn't work for me
I'm currently on Windows 10 1809 semi-annual channel. All firmware updated. All windows updates installed.
Is there any methods I can try to solve the problem?
Thanks a lot!!
10-30-2019 07:43 AM
In my view it really is just a case of Windows 10 not properly handling two batteries well so these instructions are intended to get them both rediscovered by Windows one at a time. Be sure to follow the instructions to the letter.
11-13-2019 02:38 PM