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08-13-2018

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Battery NOT Re-Charging for ThinkPad P71

2018-08-13, 16:47 PM

I have a BRAND NEW ThinkPad P71.  The A/C adaptor is plugged into the laptop and the green light next to it is illuminated.  On the screen in the lower right hand there is the Lenovo Vantage battery icon showing the percentage of power level in the battery.  There is also the system battery icon in all white showing the same power level when you hover over it.  BOTH icons display, "plugged in, not charging" and I have confirmed the outlet my laptop is plugged into is working properly to supply power.  When I unplug the A/C adaptor and the battery power percentage reduces and after plugging the A/C adaptor back into laptop the battery power percentage does not increase.

 

I have also done what Lenovo recommends which is to unplug the adaptor, remove the battery, and re-engage BUT nothing has changed.  For some reason the battery is simply not re-charging.  Anyone else have this problem OR does anyone know another solution?  

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06-13-2013

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Re: Battery Charging for ThinkPad P71

2018-08-13, 19:01 PM

Win7 or Win10?  Probably the latter.

 

Is the latest Power Management Driver (for 7/10) installed?  Power Manager (for 7) installed?

 

Barring a defective battery or some other hardware issue with your P71 (and worst case, it's under warranty so you can call Lenovo to open a ticket and get a technician to come out and solve your problem with appropriate parts replacements, whatever it might be), it might be that the software is simply deciding not to "charge" because of a battery plan agenda or Registry values set so that no charging is occurring (under software control) even though you've now tried to drain it a bit so that it really should have reached its lower-threshold to reactivate charging.

 

I recently learned of a Registry hack to set the low/high limits in Win10 to match the customizable values for the Lenovo Win7 Power Manager (which does not exist in Win10).  After installing this REG file Win10 battery charging behavior will work like it does in Win7 with Power Manager, meaning there is your own low threshold value above which no charging occurs but below which charging once again kicks in.  And then charging continues until the upper threshold is reached at which charging stops (thus avoiding charging all the way up to 100%, but stopping below it... say at 96%).  Curiously, Win10 seems to reset the primary parameter values of the REG file whenever a Windows Update is applied (e.g. overnight) or on other unknown circumstances.  So it doesn't hurt to simply run this REG install once a day, just to be sure its intent will be facilitated.

 

Here is the REG file.  Copy it, save it, and run it.  My limits are low-threshold of 80% and high-threshold of 96%, which you can change as you want.  But the point is to see if applying it has any effect on kick-starting the battery charging back to life, assuming your current charge value is below the low-threshold limit set in this REG.

 

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Lenovo\PWRMGRV\ConfKeys\Data]
"ChargeStartControl"=dword:00000001
"ChargeStopControl"=dword:00000001
"ChargeStartPercentage"=dword:00000050 ;=80% feel free to change this value. just make sure it same across all 3 sections
"ChargeStopPercentage"=dword:00000060 ;=96% you can also change this as you wish

[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Lenovo\PWRMGRV\Data]
"ChargeStartControl"=dword:00000001
"ChargeStopControl"=dword:00000001
"ChargeStartPercentage"=dword:00000050
"ChargeStopPercentage"=dword:00000060

;you have to replace last part of this string by your battery serial number
;you can find this number in your registry or in "Lenovo Settings" app - under battery details ("Bar-Code Number")
;example: [HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Lenovo\PWRMGRV\ConfKeys\Data\1ZS424BK05M] 
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Lenovo\PWRMGRV\ConfKeys\Data\X1XP5AP025B]
"ChargeStartControl"=dword:00000001
"ChargeStopControl"=dword:00000001
"ChargeStartPercentage"=dword:00000050
"ChargeStopPercentage"=dword:00000060

; Edited by:
; Adam, in-ear.com 
; Headphone Experts 
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28 Posts

05-30-2017

CA

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Re: Battery NOT Re-Charging for ThinkPad P71

2018-08-15, 12:31 PM

Probably a dumb question, but are you in Airplane Mode? It sounds like the laptop is receiving some power when turned on, just not enough to charge the battery.
"When I unplug the A/C adaptor and the battery power percentage reduces and after plugging the A/C adaptor back into laptop the battery power percentage does not increase"

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4 Posts

08-13-2018

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Re: Battery NOT Re-Charging for ThinkPad P71

2018-08-15, 13:17 PM

Yes I did check ALL options to make sure airplane mode was not turned on.  Called Lenovo customer service twice - no solution.  Took it to one of their authorized repair shops - no solution.  The laptop (only 5 months old) had to be returned to Lenovo for repairs per their request.  Apparently (not yet confirmed) there is a battery and/or a mother-board defect. Thanks for your suggestion though.   

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1388 Posts

06-08-2013

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  • Message 5 of 24

Re: Battery NOT Re-Charging for ThinkPad P71

2018-08-16, 9:09 AM
Try to run a live USB of Ubuntu or another Linux distribution. If it's charging there, you can rule out hardware issues the quick way.

Try the following steps too:
1. Remove the battery
2. Boot to the BIOS and clear the CMOS by resetting BIOS to use default settings.
3. Boot to Windows 10 and wait a few minutes.
4. Turn off your machine.
5. Plug-in battery.
6. Boot to Windows 10.

Kind regards,

Jonas Hendrickx

Lenovo Insider, Windows Insider MVP

 

Looking to buy a Lenovo machine? Find your country

Belgium | Canada | Finland | France | Germany | Netherlands | Sweden | U.K. | U.S.A.

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26 Posts

06-15-2015

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Re: Battery NOT Re-Charging for ThinkPad

2018-08-16, 13:01 PM

It seems that after recent updates - power manager, power driver and BIOS, power manager stopped working properly. Considering that I have few machines to compare - W530s and T450s only ones which hasn't got updates still performing properly. Definitely software issue ( looks like power manager lost administrative rights) - "Apply" button always greyed out, and pressing "OK" after changing battery mode does not actually change anything. If I reopen power manager settings still remain as they were before changes. I am starting power manager directly from PWMUI.EXE with "Run as Administrator" with same lack of success.  In fact, battery capacity shown, also not correct, on screen gauge constantly showing 100% etc. something fishy going on here.

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  • Message 7 of 24

Re: Battery NOT Re-Charging for ThinkPad

2018-08-16, 20:53 PM

 wrote:

It seems that after recent updates - power manager, power driver and BIOS, power manager stopped working properly. Considering that I have few machines to compare - W530s and T450s only ones which hasn't got updates still performing properly. Definitely software issue ( looks like power manager lost administrative rights)


Need specifics.

 

Can you please provide the missing information: what machine are you talking about having "power manager" no longer working properly?  And I assume you're talking about a Win7 situation where Power Manager actually exists, and not a Win10 situation?

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  • Message 8 of 24

Re: Battery NOT Re-Charging for ThinkPad

2018-08-16, 21:08 PM
yup, win7 x64. W530 2436 CTO, and 450S...
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2330 Posts

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Re: Battery NOT Re-Charging for ThinkPad

2018-08-16, 22:24 PM

What BIOS are you running on your W530?  There was this other thread from back in April regarding the latest 2.70 BIOS update resulting in his W530 seemingly running very hot.  I believe it was either 2.69 or 2.70 which contained the update for Spectre/Meltdown which was supposedly crucial.

 

But I saw that thread and decided to hold off on updating the BIOS on my own W530 (2438-52U) which was still running very happily with BIOS 2.67.  I normally have no problem letting System Update take care of all suggested critical and important/recommended updates, perhaps only refusing an optional update if I don't use that functionality or hardware.  My Windows Updates and all the rest of my Lenovo software/driver updates are up-to-date, but I was pessismistic about this 2.70 BIOS update.

 

But I believe I did go ahead and installed the latest Power Management Driver (1.67.14.04) from May and Power Manager (6.68.15) from June, even while sticking with BIOS 2.67.  No problems, and my battery charging is fine.

 

According to the BIOS Readme, I don't think you can go back further than to 2.69 even if you wanted to, if you've already installed 2.70.

 

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  • Message 10 of 24

Re: Battery NOT Re-Charging for ThinkPad

2018-08-16, 22:26 PM

Incidentally, this thread was originally posted for a battery not recharging issue for a ThinkPad P71, not for a W530.  I would suggest you start a separate thread for the W530 if you want to pursue this.

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26 Posts

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  • Message 11 of 24

Re: Battery NOT Re-Charging for ThinkPad

2018-08-16, 22:32 PM
well, I don't expect any solutions from forums, period. Just to bring "someone's" attention to the problem.
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Re: Battery NOT Re-Charging for ThinkPad

2018-08-16, 23:00 PM

On the contrary, these Lenovo forums are participated in by many very experienced Lenovo users who very likely actually can share productively from their past experiences.  Somebody else may already have run into your issue or have an answer to your question, and that really is what this "community forum" is primarily all about, namely sharing knowledge in the hopes that it might benefit others who are experiencing a similar issue.

 

Furthermore, there are some senior Lenovo engineers and staff who actually do "monitor" this forum in order to (once again) provide assistance when a reported problem or question involves product-level hardware matters justifying their involvement or assistance.  This is completely separate from any Support Ticket warranty service, but usually regards problems or observations reported by users that reflect on a possible defect either in hardware or a particular software release provided by Lenovo engineering.

 

But in particular, this specific thread really was posted about a P71, not a W530, although this forum is for both machines.  I really do suggest you post a separate thread if your W530 battery is no longer charging.  And although  your laptop is no doubt out of warranty, it certainly could also actually be a genuine hardware problem requiring repair.

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  • Message 13 of 24

Re: Battery NOT Re-Charging for ThinkPad

2018-08-17, 13:20 PM

Pretty uppity for a newcomer, when I am only trying to help out. 

 

Anyway, I've now  updated my own W530 (2438-52U) to the latest 2.72 BIOS as well as the latest 6.68.15 Power Manager and latest 1.67.14.04 Power Management Driver.

 

I launch Power Manager from the GUI icon on the taskbar, and the "apply" button lights up normally when I change something. It doesn't remain grayed out.

 

However battery charging does seem to be behaving strangely.  Right after updating the BIOS and software I pulled my power plug out, to let the battery drain below 80% which is my low-threshold for starting charging.  95% is my upper limit to stop charging. Shortly after the battery dropped down to around 77% I suddenly got a message from Power Manager warning me that battery had dropped blow 10% (actually it was now at 6%) and that the machine would shut off if I didn't plug it in.

 

So I plugged it in and it started charging.

 

 

 

 It worked its way all the way back to 89%, although the recharge rate had slowed down to about 3W which is quite normal.  Oddly, it told me it was just 3 minutes away from finishing (which didn't seem possible at a 3W recharge rate).  And then suddenly it showed 100%!  It's not supposed to go above 95%, so this was unexpected.

 

I then ran Battery Info and it confirmed that the battery was now at 100%.

 

 

So I agree with some of your comments, that something seems not quite right. The fact that my battery somehow instantly recharged from 89% to 100% (blowing past the 95% upper limit I have set) is definitely not right.

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26 Posts

06-15-2015

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  • Message 14 of 24

Re: Battery NOT Re-Charging for ThinkPad

2018-08-17, 13:59 PM

I do this stuff for the last quarter century or so, hence all the blah-blah-blah getting old after a while.

Here is my screen shots backwards for some reason. They are self explanatory for the most part. Anyways, making changes in Battery maintenance screen does not work anymore as well as the rest of the settings. Once again besides fishy battery reading itself, manager does not have enough rights to make any changes, period. Reseting battery meter did not yield any positive changes. Even cycle count stuck on the same number. charge indicator should slowly going back and forth between 96% and 100% - not happening anymore either.

 

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Re: Battery NOT Re-Charging for ThinkPad

2018-08-17, 14:19 PM

I have no problem changing things on Battery Maintenance screen.  But I normally run with "custom" setting of 80% - 95%.

 

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Re: Battery NOT Re-Charging for ThinkPad

2018-08-17, 14:25 PM

I can make changes a'right, but when PWRMGR being reopened it still showing the same screen without any changes made previously.

 

Pictures backwards in time progression. 

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Re: Battery NOT Re-Charging for ThinkPad

2018-08-17, 14:36 PM

... from what I can see, Lenovo power manager doesn't even "talk" to the windows power manager. Definitely software issue. I am unable to even generate report from command prompt. Something went wrong with permissions on last update...

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Re: Battery NOT Re-Charging for ThinkPad

2018-08-17, 14:59 PM

Things seem to have stabilized now, with second cycle of pulling power and letting it drain down to 76% and then plugging it back in again.  Recharge rate was at 42W and charging proceeded normally until it got up to about 94% at which time the recharge rate slowed down as expected.

 

 

Charge gradually reached 95% and then stopped, as it should.

 

 

I give up.  Things now seem normal again after that very first anomaly after BIOS/driver update that I described previously. Power state is now AC line-only, no charging, at stable at 95%. 

 

I will keep watching this, to see if erratic behavior returns.

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  • Message 19 of 24

Re: Battery NOT Re-Charging for ThinkPad

2018-08-17, 15:06 PM

Don't know what just happened but here is the new screen

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13 Posts

10-10-2018

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Re: Battery NOT Re-Charging for ThinkPad P71

2018-10-23, 21:01 PM

@goffro89


I too have a brand new ThinkPad P71 with 1 battery cycle count as of now, Windows 10 Pro, Bios N1TET50W 1.24. I use it as a desktop therefore it's always plugged in. When the battery reaches 98% the icons display (plugged in, not charging), however, when I unplug the A/C adapter the battery percentage reduces and when plugging the A/C adapter back the battery percentage increases normally.

 

When you first ran the Vantage, did it ask you to update by automatically downloading (SystemInterfaceFoundation.exe) and manually installing it?

 

I have started a new thread for the best battrey charge threshold which can be found in the following link,

 

https://forums.lenovo.com/t5/ThinkPad-P-and-W-Series-Mobile/ThinkPad-P71-Battery-Charge-Threshold-amp-Health/td-p/4246771

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06-15-2015

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  • Message 21 of 24

Re: Battery NOT Re-Charging for ThinkPad P71

2018-10-23, 21:30 PM
..we can start as many threads as we wish, and discuss fine points of French literature, but, and it is huge elephant in the room. Lenovo screwed up royally on summer updates - established fact, to the point of pulling some of the files from circulation, therefore until they will do their part to fix drivers everything else is moot and pointless.
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