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Dwayno
Paper Tape
Posts: 2
Location: US
Views: 6,854
Message 1 of 106

Battery Charge Threshold bug - charges past threshold

Not sure where I'd submit a bug report, has anyone else experienced the following?

 

I have my charging thresholds set to 80% in Lenovo Companion for my T470. However, it seem like half the time it will end up charging one or both batteries to 100%. What seems to happen is it charges to 80%, and it might sit there for a little while, and then a battery creeps to 81%, at which point it then gets charged to 100%. I'm assuming the code behind the threshold portion of the program is saying if charge == threshold rather than if charge >= threshold to determine when to cut the charging off. 

Blerpu
Paper Tape
Posts: 1
Location: US
Views: 6,673
Message 2 of 106

Re: Battery Charge Threshold bug - charges past threshold

I am having the same problem.

 

Previously, I had no problems when I was using the Lenovo Settings app to manage battery thresholds. I think that there may have been some issues in porting over the battery threshold functionality from Lenovo Settings to the Lenovo Companion. 

wordfool
Paper Tape
Posts: 6
Location: US
Views: 6,657
Message 3 of 106

Re: Battery Charge Threshold bug - charges past threshold

Same thing happening here. Everything worked fine with Lenovo Settings (on my T460p). Then I uninstalled that and installed Lenovo Companion. At first the battery charged to 2% past threshold then stopped. Next day it blew past the threshold and went up to 100%. So I uninstalled both Companion and the Power Management driver, reinstalled both, and still the threshold is being ignored. 

Chris88
Punch Card
Posts: 5
Location: US
Views: 6,597
Message 4 of 106

Re: Battery Charge Threshold bug - charges past threshold

Same issue with T25. Used the new laptop for a week with no issues. I then updated the Power Management driver to version 1.67.13.12. Shortly after that the battery threshold management became intermittent. It would work for a day or two then ignore my settings and fully charge. Searching the net, I find many solutions that go years back, yet this issue persist. I'm not one for tinkering with system internals like registry editing. Finally, I rolled back the Power Management driver to 1.67.12.24. So far so good, but that may be a short lived relief.
wordfool
Paper Tape
Posts: 6
Location: US
Views: 6,575
Message 5 of 106

Re: Battery Charge Threshold bug - charges past threshold

So you're able to get it working right with Lenovo Companion and an older Power Management driver, or are you not using Lenovo Companion at all?

Chris88
Punch Card
Posts: 5
Location: US
Views: 6,566
Message 6 of 106

Re: Battery Charge Threshold bug - charges past threshold

Yes, companion is installed and functions ok.
wordfool
Paper Tape
Posts: 6
Location: US
Views: 6,484
Message 7 of 106

Re: Battery Charge Threshold bug - charges past threshold

Anyone know wher I can get old versions of the Power Management Driver?! Alternatively I might just go back to Lenovo Settings. 

 

Hey Lenovo, your silence on whether this is a bug in Lenovo Companion is deafening!

Lenovo Employee hzfdbd
Lenovo Employee
Posts: 249
Location: CN
Views: 6,432
Message 8 of 106

Re: Battery Charge Threshold bug - charges past threshold

@Dawayno,

is your system upgraded from win7?

Is battery threshold working for system before?

adelecho
Paper Tape
Posts: 2
Location: US
Views: 6,280
Message 9 of 106

Re: Battery Charge Threshold bug - charges past threshold

I also have this problem with T470 on Win 10. Sometimes it will start charging when it's past the threshold. I need to open the Lenovo Companion and make it stop.
planetjumper
Punch Card
Posts: 13
Location: AT
Views: 6,271
Message 10 of 106

Re: Battery Charge Threshold bug - charges past threshold

Same problem here (Thinkpad P51). I have my charging threshold at 80%, but yesterday it charged to 100%. I had no problems with Lenovo Settings. 

 

Lenovo, please update your Apps.

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