English Community

ThinkPad NotebooksThinkPad: P and W Series Mobile Workstations
All Forum Topics
Options

6 Posts

05-11-2020

DE

14 Signins

100 Page Views

  • Posts: 6
  • Registered: ‎05-11-2020
  • Location: DE
  • Views: 100
  • Message 1 of 4

P52 turns off when press Fn+F8 and battery isn't plugged in

2020-08-22, 22:58 PM

Hi,

after my P52 was repaird by the manufacturer because of a malfunction of something on the motherboard with the documented symptom "random reset", i got a P52 with new mainboard and a hidden function that is mentioned in the subject :).  Normally this key kombination is for turning on and off the WiFi, but now it turns off the computer without warning, when the battery is not inserted. After that you need to reconnect the power plug on the computer.

 

Do someone have the same issue?

And maybe a solution.

Reply
Options

1 Posts

08-24-2020

AR

3 Signins

5 Page Views

  • Posts: 1
  • Registered: ‎08-24-2020
  • Location: AR
  • Views: 5
  • Message 2 of 4

Re:P52 turns off when press Fn+F8 and battery isn't plugged in

2020-08-24, 2:08 AM

https://support.lenovo.com/us/en/solutions/ht100574

 

 

Additional Information

It is important to note that users should not attempt to plug 135W or higher AC adapters into an outlet on an airplane because they risk tripping the circuit breaker in the seat and disabling the outlet.

Reply
Options

6516 Posts

10-29-2009

NC

17652 Signins

162029 Page Views

  • Posts: 6516
  • Registered: ‎10-29-2009
  • Location: NC
  • Views: 162029
  • Message 3 of 4

Re:P52 turns off when press Fn+F8 and battery isn't plugged in

2020-08-24, 16:08 PM

The F8 key puts the P52 into airplane mode, which means Airplane Radio Mode and Airplane Power Mode.  Since you decided to remove your battery, the effect of Airplane Power Mode will be to unplug the AC adapter.  If you just want to turn off WiFi, I think you can do that in Action Center or by using the WiFi icon in the notification area.

Reply
Options

413 Posts

07-08-2019

CA

563 Signins

7318 Page Views

  • Posts: 413
  • Registered: ‎07-08-2019
  • Location: CA
  • Views: 7318
  • Message 4 of 4

Re:P52 turns off when press Fn+F8 and battery isn't plugged in

2020-08-26, 15:06 PM

Hi!

 

I would suggest you set custom charge thresholds in Vantage instead of removing the battery. 

 

For always plugged-in use, I recommend using charge at 40% and stop at 50%. This greatly reduces battery wear from charging and prevents wear from low charge.

 

For mobile use, that's up to your priorities, but stopping charge at 80% and preventing going under 20% will reduce wear.

 

The battery would be there if needed but it's usage would be minimized.

 

Martin

 

P.S. If I already wrote this, I'm sorry, I don't see it in this thread. Mobile editing has bugs ;-)

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

I'm a volunteer, NOT a Lenovo employee.
If I solved your issue, please click Accept as a Solution.
If my post helped, consider giving me a Thumbs Up.

Main: P52 (I7-8750H P1000 FHD 16GB 2TB-SSD 1TB-HDD)
Also, 2x M820z, 1x P520c, 1x ideaCentre 300S-11IBR

Reply
Forum Home

Community Guidelines

Please review our Guidelines before posting.

Learn More

Check out current deals!

Go Shop
X

Save

X

Delete