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SaarBlitz1
Paper Tape
Posts: 6
Registered: ‎09-19-2018
Location: IL
Views: 7,264
Message 1 of 7

T580 2nd battery does not charge (stays at 45%) under Win10

Hello,

 

Brand new T580, second battery at 45%, and does not charge (tried to disable built-in batteries in BIOS and then rebooting, didn't help). Also tried resetting via Windows 10 , got error.

 

Any idea? Using latest Windows and Lenovo drivers.

 

Thank you,

Saar

JimBobMC
802.11n
Posts: 258
Registered: ‎10-27-2016
Location: US
Views: 7,254
Message 2 of 7

Re: T580 2nd battery does not charge (stays at 45%) under Win10

When you click microsoft battery icon on the task bar does it show both batteries?

If you look in Device Manager are both batteries listed?

 

The windows 10 - 1803 update screwed up a lot of Thinkpads with two batteries.

So, if the answer to the above question(s) is NO try this:

 

The same thing happened to me on my T480

 Here is how I fixed it:

 I may have some extra unnecessary steps in here, but I wanted to be sure I didn't screw it up:

  • Open the Device Manager by searching for it or right-clicking the Start button and selecting Device Manager.
  • Click Batteries on the list to expand it and you should see two items (maybe three items – if your machine is equipped with two batteries there may be two, but on my machine which does have two batteries only one was displayed) Anyway:
  • You will see: : Microsoft AC Adapter
  •  And one or two  Microsoft ACPI-Compliant Control Method Battery (s)
  • Right-click on each item and choose Uninstall device. Yes, you are uninstalling your laptop's battery drivers, but don't worry because they will automatically be reinstalled when you restart your laptop.
  • Shut down your laptop.
  • Unplug the power cable from your laptop.
  • Power on the laptop (running on batteries now) and enter BIOS
  • Go to:  Config --> Power  -->  and select the option to “Disable built-in battery”
  • You will get a prompt that says the machine will power down if you continue.
  • Acknowledge the prompt  --> the machine shuts down.
  • If your laptop has a second removable battery, remove it.
  • Plug in the charger cable to your laptop, this puts the internal battery back on-line and powers up the system.
  • Let it stabilize at the desktop – if you want to check Device Manager you should now see the AC adapter and ONE battery (the internal battery, the 2nd battery is uninstalled and laying on your desk at this point).
  • Shut down the machine
  •  unplug the charger cable
  • install the 2nd external battery, making sure it it latched and then locked in place.
  • plug the charger cable back in
  • power on the laptop and boot to the desktop
  • At this point my machine was fixed – both batteries and the AC adapter were registered in Device Manager, and both batteries once again showed up as separate line items in the Microsoft battery taskbar item and functioned properly.

 

 

 

If a post answers your question, please mark it as an ”Accepted Solution“!
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~~
Some years back I worked for IBM, currently I do not work for,
nor do I speak for Lenovo or IBM.
SaarBlitz1
Paper Tape
Posts: 6
Registered: ‎09-19-2018
Location: IL
Views: 7,187
Message 3 of 7

Re: T580 2nd battery does not charge (stays at 45%) under Win10

Great, thank you very much. It's perfect now :-)

JimBobMC
802.11n
Posts: 258
Registered: ‎10-27-2016
Location: US
Views: 7,178
Message 4 of 7

Re: T580 2nd battery does not charge (stays at 45%) under Win10

Excellent!

We shouldn't have had to go through this exercise, but I'm glad it worked for you!

 

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
~~
Some years back I worked for IBM, currently I do not work for,
nor do I speak for Lenovo or IBM.
droodman
Ctrl-Alt-Del
Posts: 13
Registered: ‎03-08-2015
Location: US
Views: 5,522
Message 5 of 7

Re: T580 2nd battery does not charge (stays at 45%) under Win10

This worked great for me too. It also fixed a failure to recognize my Lenovo Thunderbolt 3 dock, at least so far...

Stewart747
What's DOS?
Posts: 1
Registered: ‎03-20-2019
Location: GB
Views: 5,256
Message 6 of 7

Re: T580 2nd battery does not charge (stays at 45%) under Win10

This solved my problem as well, thanks very much.

 

I have a Lenovo T580, BIOS 1.20, Windows 10 Pro 1809. Battery 1 (built-in) was charging OK. Battery 2, the removable one on the underside of the unit, was not charging. Battery 2 said "19% and not charging". Hovering over the power icon in the system tray gave a message "plugged in and not charging". The above steps solved this.

egSebastian
What's DOS?
Posts: 1
Registered: ‎08-05-2019
Location: US
Views: 2,029
Message 7 of 7

Re: T580 2nd battery does not charge (stays at 45%) under Win10

WOW!   That's quite a process!

 

Question: does it just show that my battery is 53% charged (in my case) or is it actually only 53% charged?

Will I be able to use my laptop on battery for longer period if I go through your detailed (scarry) process; or is it just "aesthetical" and I'll have the satisfaction to see 100% instead of 53%?

 

thanks!!!

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