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bigoldbrat
11-19-2017, 10:13 PM
Just starting this thread to see if any other owners of the GL752VSK have the same issue. There has been an open thread for more than a year on the GL502 VS for this issue.

Thanks.


Some of my exchanges on that thread...


Quote Originally Posted by cl-Albert View Post
Hi,

Sorry to hear about the problems and that this couldn't be a little more straightforward.
I'm located at the ASUS U.S. office and unfortunately am not able to provide much assistance with customers located overseas other than advice or suggestions if requested.

If you haven't tried it already though, suggest contacting or working with your local ASUS support and maybe your store as well if we don't see any better suggestions from ASUS HQ reps.

Getting back to your question above though, there are at least 2 different versions of the GL502VS with different cpus.
There is the GL502VS using the 6th generation Intel 'Skylake' cpu as well as the GL502VS using 7th generation Intel "Kaby Lake' cpu which internally at ASUS is called the GL502VSK model rather than GL502VS, but externally for customers we just call them both GL502VS probably to keep things simpler since they are fairly similar.

This is important to you though because ASUS HQ currently only recognizes the battery drain issue for the GL502VS model with 6th gen. cpu and 180w power supply providing options to customers reporting this issue to their local ASUS support as in the sticky thread below.
https://rog.asus.com/forum/showthread.php?94349-Official-Reply-for-GL502VS-Battery-Discharging-Issue


The GL502VSK model that you have with Intel 7th gen. cpu is using a different motherboard (and bios) than our GL502VS model with 6th gen. cpu and the GL502VSK also comes with a 230W power supply rather than the 180W power supply included with the GL502VS model with 6th gen. cpu, but may not be recognized by HQ as having the same battery drain issue as the GL502VS 6th gen. model and probably will not have the same options from your local ASUS support although hopefully they can still help you provide some sort of resolution or continue to investigate the issue with you if you want to go this route.

Anyway, apologize for the long reply, but just want to make sure you do continue to work with your local ASUS support (and store?) instead of just waiting to get a solution through these ROG forums (which we hopefully will see, but not sure?).
I have been following this issue some, but not that closely, so your local ASUS support may also have or get some updated information that I'm not aware of.
Hope this helps some?

My response:
I have the GL752VSK model and I have the same issue. I have reported before, but obviously if those who have issues with the 502 cannot get any resolution in a year +, you will understand why I have given up on trying for myself. Occurs in some games, not all. Today I played Tom Clancy Ghost Recon Wilderness and was down to 74% charge after 3 hours. I also played COD WWII and Wolfenstein 2 with no loss in battery. High/optimized settings on all 3. Go figure.
My thought is that there are probably a lot of users with the issue on Asus models who have not noticed the issue.
My rig:
OS Name Microsoft Windows 10 Pro
Version 10.0.16299 Build 16299
System Manufacturer ASUSTeK COMPUTER INC.
System Model G752VSK
System Type x64-based PC
Processor Intel(R) Core(TM) i7-7820HK CPU @ 2.90GHz, 2904 Mhz, 4 Core(s), 8 Logical Processor(s)
BIOS Version/Date American Megatrends Inc. G752VSK.302, 4/27/2017
SMBIOS Version 3.0
Embedded Controller Version 255.255
BIOS Mode UEFI
Installed Physical Memory (RAM) 16.0 GB
Total Physical Memory 16.0 GB
Available Physical Memory 12.6 GB
Total Virtual Memory 34.8 GB
Available Virtual Memory 31.2 GB
Hyper-V - VM Monitor Mode Extensions Yes
Hyper-V - Second Level Address Translation Extensions Yes
Hyper-V - Virtualization Enabled in Firmware Yes
Hyper-V - Data Execution Protection Yes
NVIDIA GeForce GTX 1070 16G

https://rog.asus.com/forum/images/misc/quote_icon.png Originally Posted by cl-Albert https://rog.asus.com/forum/images/buttons/viewpost-right.png (https://rog.asus.com/forum/showthread.php?p=687181#post687181)
Hi,

Thanks for the detailed problem description. It can really help when the problem is not very obvious or easy to catch.

Yes, not sure how much more effort you want to put into it, but the G752VSK is not officially known to have a battery drain issue on the ASUS side, so you probably would need to work with your local ASUS support to show them how to catch the issue which they could hopefully find a solution for once they do.
Expect you are using the original ASUS AC adapter, but something to check. If the notebook still sees the adapter plugged in when the draining occurs though, it doesn't sound like it would be related to the AC adapter.

I don't remember any other G752VSK customers reporting the same issue, but if you're interested, you may want to create a separate post about it so it doesn't get lost with these GL502VS cases. Since the G752VSK is a larger unit, most people may leave it plugged in most of the time or not be as concerned about the battery and using it on battery power?

Not sure if it could be a problem with just your one unit, but doesn't sound too easy to catch, so hard to say.
If you're under warranty and decided to send it back for repair though, might not be easy to get the technicians to spend 3 hours playing games to try to catch it, so if you find that it also occurs running some programs or benchmarks unattended, be sure to pass this along for repair to try.



Hi Albert and thank you for the reply. I may post a new thread out of curiosity. I always use the laptop plugged in with the original battery ADP-230EB T. I am under warranty but I have this unit running great with WIN 10 CU and have never had any issues with the latest GEForce game ready drivers (currently 388.31)...so this issue is not enough for me to start from scratch, it's an annoyance...

cl-Albert
11-20-2017, 05:27 PM
Hi bigoldbrat,

Thanks for taking the time to create a separate post.

Wanted to re-confirm your notebook model though because GL752VSK isn't a valid ASUS model as far as I know although we have produced GL752VL and GL752VW models (our model names can be confusing honestly).
Since you mentioned you have the i7-7820HK cpu though, it sounds like you have the G752VS with 7th gen. cpu (G752VSK) if you can confirm your full G752VS-xxxx model name printed under the notebook next to your serial number.
I'll probably edit the title and move this thread to the 'G' series notebooks section once you confirm.

Also, just wanted to confirm you weren't using any third party utilities to overclock the cpu or gpu?

bigoldbrat
11-20-2017, 10:34 PM
Hi bigoldbrat,

Thanks for taking the time to create a separate post.

Wanted to re-confirm your notebook model though because GL752VSK isn't a valid ASUS model as far as I know although we have produced GL752VL and GL752VW models (our model names can be confusing honestly).
Since you mentioned you have the i7-7820HK cpu though, it sounds like you have the G752VS with 7th gen. cpu (G752VSK) if you can confirm your full G752VS-xxxx model name printed under the notebook next to your serial number.
I'll probably edit the title and move this thread to the 'G' series notebooks section once you confirm.

Also, just wanted to confirm you weren't using any third party utilities to overclock the cpu or gpu?

Hi, I don't know where I got the "L" from.
The model on the bottom is G752VS-XS74K, windows reports it as g752vsk.
I do not use any 3rd party utilities. This unit is overclocked by ASUS as purchased and in the ROG Gaming Center I have the option for Extreme or Standard (always on Extreme).
Sorry for the confusion.

cl-Albert
11-20-2017, 11:57 PM
Hi, okay, thanks for confirming anyway and maybe you were thinking about the GL502VS model.
Edited the title and moved the thread to the 'G' series notebooks.

bigoldbrat
11-27-2017, 12:51 AM
Guess I'm either the only one who owns this rig or the only one with the problem with this rig, or maybe both...

Clintlgm
11-27-2017, 02:57 AM
It's normal while gaming our using a lot of power that the notebook will use all the power from your Adapter and draw some power from your battery at times. Should only happen under heavy use High demand on your CPU and GPU

Damastif
11-27-2017, 08:36 PM
It's normal while gaming our using a lot of power that the notebook will use all the power from your Adapter and draw some power from your battery at times. Should only happen under heavy use High demand on your CPU and GPU

And it`s normal if this happened 1 time every 1 hour?
When you play 5 hours it`s discharg 5 times until 95% and after charging back to 100%

bigoldbrat
12-03-2017, 11:12 PM
And it`s normal if this happened 1 time every 1 hour?
When you play 5 hours it`s discharg 5 times until 95% and after charging back to 100%

So not all games but for example, 3 hours of Tom Clancy Ghost Wildlands apparently uses 100% of 230w ps and 28% of my battery (bat down to 72%) while plugged in. Not that I have any desire to do so , I could not play for 12 hours before this laptop goes dead while plugged in :)

Damastif
12-05-2017, 10:11 PM
So not all games but for example, 3 hours of Tom Clancy Ghost Wildlands apparently uses 100% of 230w ps and 28% of my battery (bat down to 72%) while plugged in. Not that I have any desire to do so , I could not play for 12 hours before this laptop goes dead while plugged in :)
Check in another game but in game options use full screen mode! I think it`s shows this issues in another games too...

gordonash
12-08-2017, 01:17 AM
I can confirm this happens to my G751JT too. I sometimes find it at 95% even tho is always plugged in.

bigoldbrat
12-08-2017, 02:24 AM
I guess it's normal? But 4 hours of play today down to 66% battery while plugged. To answer Damastif, the game is on full screen....

MasterC@ASUS
12-08-2017, 02:41 AM
I can confirm this happens to my G751JT too. I sometimes find it at 95% even tho is always plugged in.

Hi gordonash,

It's normal for laptop to discharge a small percentage after it is fully charged. It's not good to keep charging a fully-charged battery.

Clintlgm
12-08-2017, 02:43 PM
Meaning that the battery has to drop somewhere below 5% before it will start charging again. that has been my experience with G75 and G752, My notebooks stay plugged in all the time very seldom going on battery mostly only in power loss situation

JustinThyme
12-08-2017, 03:22 PM
This is normal behavior and part of the design. Its a give and take when you pack this much power into something you can carry around.
During intensive use whether it be Hi res game play or video encoding or bit coin mining etc the Brick cannot supply enough power and the circuitry from the charge port onward is strained as well. All of the power is supplied by DC. For simplicity think of your power connections to the components attaching to a DC midpoint where the battery and brick also attach. DC charge and discharge works on difference of potential. As your components from the machine draw power that DC bus/midpoint voltage drops. If the brick can keep up with the bus and keep it above the battery charge level then no discharge will occur. When power draw is such that the bus begins to drop below the charge state of the battery in voltage then the battery will begin to discharge. Picture this in your head. Two buckets. First bucket represents your brick and has a constant flow of water coming in the top and an outlet on the bottom that has a flow control valve (the outlet is your components). Second bucket (your battery) has no inlet or outlet, only a interconnect tubes to the first bucket. Now picture in your mind whats going to happen when the flow at the outlet of the first bucket exceeds that of the what is coming in at the top.....The second bucket is going to begin to empty into the first and the second bucket will fill back up when the flow going out is less than what is coming into the first bucket. I hope my simplification dint make it more confusing. I use this approach when Im teaching how this all works in classes and I see the deer in the headlights look on the students.

Damastif
12-08-2017, 03:55 PM
This is normal behavior and part of the design. Its a give and take when you pack this much power into something you can carry around.
During intensive use whether it be Hi res game play or video encoding or bit coin mining etc the Brick cannot supply enough power and the circuitry from the charge port onward is strained as well. All of the power is supplied by DC. For simplicity think of your power connections to the components attaching to a DC midpoint where the battery and brick also attach. DC charge and discharge works on difference of potential. As your components from the machine draw power that DC bus/midpoint voltage drops. If the brick can keep up with the bus and keep it above the battery charge level then no discharge will occur. When power draw is such that the bus begins to drop below the charge state of the battery in voltage then the battery will begin to discharge. Picture this in your head. Two buckets. First bucket represents your brick and has a constant flow of water coming in the top and an outlet on the bottom that has a flow control valve (the outlet is your components). Second bucket (your battery) has no inlet or outlet, only a interconnect tubes to the first bucket. Now picture in your mind whats going to happen when the flow at the outlet of the first bucket exceeds that of the what is coming in at the top.....The second bucket is going to begin to empty into the first and the second bucket will fill back up when the flow going out is less than what is coming into the first bucket. I hope my simplification dint make it more confusing. I use this approach when Im teaching how this all works in classes and I see the deer in the headlights look on the students.
And it`s normal when laptop plugin in and in status of battery write(connected, discharging) on desktop! Wothout games!
I remember, then must be(connected, not charging)

Clintlgm
12-08-2017, 05:24 PM
Yes it will drop to about 95% or less before it charges up again

mero234
12-12-2017, 06:10 PM
Hi Asus team,

I have the gl502vs-fi144t (gl502vsk) model. It has the same issue. But it never charges back, until i disconnect my charger and discharge it a little more and then re plug it, then it start charging. What if we use 300wat adapter, can this issue be fixed with that ?

I have tested Dota2 game. The first image is with default configuration of graphic card, which you can see drains the battery and the 2nd image is the undervalued graphic card which is not discharging the battery.

One more thing i noticed, when the GPU power exceeds 80watt it starts discharging for me.

On under volt settings its not exceeding 80watts so no discharging. On default setting it goes to 120wat sometimes or may be 125wat. So just tell us where we get that 40 to 45 wats from, can we use some 300wat supply to fix this issue. Any expert opinions will be really helpful to resolve issue.

LeXCode
03-13-2018, 04:54 PM
I have all drivers updated from web page support , and still the same issue. (G752VSK)

Damastif
03-13-2018, 05:50 PM
72273
I have the same!

xeromist
03-13-2018, 08:58 PM
72273
I have the same!

It's normal to cycle above 90% like that. Constantly charging at 100% is bad for the battery so it discharges a bit, then charges, discharges, etc. If it's getting below 90% while plugged in, then worry.

LeXCode
03-13-2018, 10:41 PM
https://www.asus.com/us/support/FAQ/1012793?_ga=2.125823562.1728681193.1520889323-1817677579.1520889323

bigoldbrat
03-26-2018, 10:23 PM
https://www.asus.com/us/support/FAQ/1012793?_ga=2.125823562.1728681193.1520889323-1817677579.1520889323

I think people confuse not charging above 95% with the battery discharging while plugged in and running intensive cpu/gpu resources. I experience drains at different rates depending on the game. Yesterday I played Need For Speed Payback for about 3 hours and the battery was down to 64% (while plugged in) by the time I closed the game. I totally understand that I am drawing more power that the power supply (230W) can provide. Does not seem right to me for a rig like this but it is what it is. I doubt I'll ever play long enough to drain down to shut off status but I just hope it does not reduce my battery life.

Darnassus
03-27-2018, 05:03 PM
95% - 100% is the battery holding itself back from overcharge.
If you fall below 95% to say 70% etc, you're running a game that causes so much load, all power available is needed. Battery + Brick provide it. I believe this is normal..

Remember, laptop cards are now on par with desktop cards. I do not think this should be a surprising 'fault' in terms of power feeding. ;x