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20 Posts

10-13-2015

AU

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E490 Not Charging

2019-07-29, 5:36 AM

Hi,

 

I got a E490 i bought to replace my faulty X1 Extreme while i wait for the repair.

 

The E490 now failed to charge. 

 

1. Regradless which USB-C charger i plug in, main battery will not charge.

2. if AC is plugged in, battery will not drain. But it won't charge either.

3. No charging while the device is On, Off or Sleep. No charging in all state

4. The white LED charging light is on regardless of whether a USB-C charger is plugged in. (no charger plugs in, it thinks a charger is plugged)

5. Regardness of which charger I use, it always reports that it is under-watted at boot. Even if NO CHARGER was plugged, it says "underwatted"

6. Bios update is not possible so the device believe that there is no charger plugged in.

 

Ideas?

Nelson

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1 Posts

07-30-2019

US

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Re: E490 Not Charging

2019-07-30, 11:44 AM

We recently deployed 10 E490 laptops at the beginning of the month, and at least 5 of them are having this issue.

In February, we had deployed 100 E480 laptops, and none of those users are having any issues. From a power standpoint, the only difference appears to be that the E490's are using a type c connection.

We image our devices using SCCM, and our golden image is built using the latest Lenovo driver packs.

We too have tried multiple chargers and multiple wall outlets to rule out any environmental issues without any success.

What we have noticed is that if we power the affected laptops off overnight, most of them start charging again the next day.

Unfortunately, we are trying to use these in a clinical setting where nurses are using them to document at the nurses station, and then take them into the exam rooms for charting. The are continually being unplugged, and plugged back in. We successfully updated the Bios on one of them and redeployed it. We will monitor it to see if the issue returns.

 

jimmcman

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3 Posts

11-19-2019

DE

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Re: E490 Not Charging

2019-12-15, 9:00 AM

Hi,

I have the same described issue with a brand new E490 laptop I bought.

The charging process is working / NOT working randomly.

 

Description of failure:

When connecting the charger, the "battery loading icon" shows no activity.

Also, the charging LED from the laptop stays OFF.

Restarting computer does not help.

Updating with the latest drivers did not help.

Updating BIOS did not help.

From a total of one month of usage, this failure happened 3 times.

 

After first failure, I shutted down the laptop and then connected again the charger after 3 hours.

Then it worked.

I did a full software/firmware update right after that.

 

After a week, the failure re-occured.

Went with the laptop to the shop from where I bought the laptop.

They also connected the charger, but the laptop wasn't charging.

I sent the laptop back to the workshop and after ONE MONTH the workshop said that there is no hardware failure that they could find.

 

I am very dissapointed since I have a brand new machine that I cannot use or return it back.

 

It would be very useful to have an answer on this topic.

It is a known issue by Lenovo?

Is this is a firmware bug? It was fixed in any late update? It will be fixed?

 

Thank you.

Best,

Damian

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3 Posts

11-19-2019

DE

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Re:E490 Not Charging

2020-03-22, 18:25 PM

The motherboard of my laptop was replaced by warranty.

Also I have updated all the drives, OS and BIOS.

However, the issue is still present.

I find it very frustrating that is hard to replicate the issue, since it is not happening all the time.

It is also impossible to do my work, since I am entering in the panic mode when I have to save all my data, because there is only 10% of battery left.

I don't have any other sort of issues with other electronic devices in my house.

 

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1 Posts

03-23-2020

US

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  • Message 5 of 10

Re:E490 Not Charging

2020-03-23, 5:26 AM

Hi everyone,

 

do we have a solution for this. my E490 is exactly the same. performing the same. un reliable charging sequence

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3 Posts

03-25-2020

TR

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Re:E490 Not Charging

2020-03-25, 18:00 PM
I have the very same issue. In my case until the latest Bios Update my laptop was working like charm. After installing the latest firmware and bios updates, this problem popped up. I think this issue is world wide and Lenovo must take a very serious action.
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78 Posts

07-30-2019

CN

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Re:E490 Not Charging

2020-03-26, 7:46 AM

Hi All

sorry for late reply. I have several E490 systems on hand but I didn't observe such problem.  In order to isolate the impact factors, could you provide below informations? I will try to use configuration system to test. 

 

1. Did issue happened at certain battery capacity?  such as , at low capacity or near full capacity? 

2. Did issue happened with specific version BIOS/EC,  if yes, please let me which version BIOS it is, please confirm BIOS/EC version in BIOS setup. 

3. Could you share your Power manager driver version

4. Could you share your Windows OS version

4. Could you  share your system MTM/SN with me by Private Message,  you will find MTM and SN information on the label of base cover,  the text like MTM: 20N8...   SN: PF...

 

Appreciate your feedback. 

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3 Posts

03-25-2020

TR

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  • Message 8 of 10

Re:E490 Not Charging

2020-03-26, 9:27 AM

Hi Davey,

 

You can find the answers below. I will add additional info in my private message.

 

1. Did issue happened at certain battery capacity? such as , at low capacity or near full capacity? 

- I could not observe in detail but it occurs in nearly full battery. like %99

2. Did issue happened with specific version BIOS/EC, if yes, please let me which version BIOS it is, please confirm BIOS/EC version in BIOS setup. 

- LENOVO R0YET42W (1.25), 1/13/2020

3. Could you share your Power manager driver version

- Lenovo Power Management Driver (64-bit), 1.67.17.50, 06 Feb 2020

- Intel DPTF Driver, 8.6.10401.9906, 26 Dec 2019

4. Could you share your Windows OS version

- Windows 10 Pro

5. Could you share your system MTM/SN with me by Private Message, you will find MTM and SN information on the label of base cover, the text like MTM: 20N8... SN: PF...

- I will send this info via private message.

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78 Posts

07-30-2019

CN

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  • Message 9 of 10

Re:E490 Not Charging

2020-04-01, 2:34 AM

Hi Tayfuncakicier

I tested two E490 systems with same version BIOS but didn't observe the stop charging issue. 

As you said it occurs in a near full capacity, like 99%,  I guess you got an expected situation by the charging design.   After battery is charged to 100%, if you remove the AC adapter and re-attached it  to system during battery is discharged in the range of 95%-100%,  battery won't be charged any more unless you discharge it lower than 95%. This is a design to prevent battery from being over-charged. 

 

So I suggest you discharge the battery under 95% then charge it again to see if can get 100% charged.  Any question, please let me know. Thanks!

 

 

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3 Posts

03-25-2020

TR

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Re:E490 Not Charging

2020-04-08, 8:35 AM

Hi Davey,

 

 

 

I am having the same issue again right now. My battery level is %3 and it does not charge (I have noticed this when it was around %20,). A few minutes later it will forcely shuıt down.

 

Maybe you should do your tests or experiments under different circumstances. Believe me, this is a real problem and goes nowhere.  

 

 

 

Regards

 

Tayfun

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