Custom Battery Charge Limits

[seerge]

Hello fellow community,

It is known that some and especially new devices don't support any battery charge limits other than 80%. (As in MyASUS you simply can't set anything except 80% or 100%)

In G-Helper you can drag battery slider to any value obviously, but it doesn't mean your firmware / device will follow it if it doesn't support it in a first place.

I wanted to restrict slider values only to supported options to avoid confusion.

Can you write your model name, and list values that you know it supports. Easiest way to verify if value is supported is to

• discharge your laptop lower than that value,
• set slider to desired value and monitor if it stops charging upon reaching it (approximately).

Yellow / Orange charging LED should change color to White (or just turn off) when device stops charging.

---

I'll start : G14 2022, GA402RK - Supports any limits :)

Thanks.

---

UPDATE

Version with removed unsupported limits is live
https://github.com/seerge/g-helper/releases

• All TUFs (except few models) and G16 and G14 2024 - support 60% ... 80% only
• All other devices (ROG, etc) - support any limit

[Kikimahe]

Hi Serge.

F17 (2022) FX707ZM
(This is probably the same for the 2022 F15 FX507xx).

Device supports only 55% to 85%
All other values do not work.

Limit : 
40% KO Continues to charge
45% KO Continues to charge
50% KO Continues to charge
55% OK (stop charging 54,5%)
60% OK (stop charging 59,5%)
65% OK (stop charging 64,5%)
70% OK (stop charging 69,6%)
75% OK (stop charging 74,5%)
80% OK (stop charging 79,5%)
85% OK (stop charging 84,6%)
90% KO Continues to charge
95% KO Continues to charge

Note:

• By doing this test I lost 1% on battery health. I knew this would happen because i'm always with battery 100%. :)
• At the beginning, the laptop charge fast with 75W. At +80% the lapop charge decrase slowly at 50W,45W,40W,35W,30W etc ...
  At +98% the laptop charge is 5W only.

Have a nice day. :)

[seerge]

@Kikimahe great, good to know. Interesting that your device supports only range from 55% to 85%. I wonder if it's same for all TUFs or not.

As for your health, it's most probably cause windows just updated it's own battery calibration measurements (so you have noticed what was already the case)

Thanks!

[Kikimahe]

I remember MY ASUS offered 60% and 80% only.
Asus had a margin of 5%.

[seerge]

Ok, my idea is to allow as much flexibility is possible in the app, but remove unsupported values.

[ichephe]

My device:
FA507NU (Asus Tuf 2023) AMD 7735HS & Nvidia RTX4050
Haven't tested extensively, but can confirm:

• Limit 60% : Stop at 59.5%
• Limit 55% : Stop at 54.5%
  under 55% does not work.
  have not tested 60% above.

[ahmeddwalid]

My device: ASUS TUF A15 2023 (FA507NV)

These are my tests:

. Limit 55%: stops charging at 54.5%
. Limit 60%: stops charging at 59.5%
. Limit 65%: stops charging at 64.5%
. Limit 80%: stops charging at 79.5%

I leave it set at 55% while plugged in on the desk.

[Raghav-Kochhar]

2021 Tuf Gaming FX506HM with Intel i5-11400H & Nvidia RTX 3060:

• lowest supported 55%, stops at 54.6%

[seerge]

@Raghav-Kochhar and highest?

[Djkcool]

2019 Tuf Gaming FX505GT with Intel i5-9300H & Nvidia GTX 1650:

Limit:
40% - Continues to charge at ~30W
45% - Same
50% - Same
55% - Same
60% - Stops charging at 60.1%, Continues charging at ~28W
65% - Continues to charge at ~25W
70% - Continues to charge at ~22W
75% - Continues to charge at ~19W
80% - Stops charging at 80.0%, Continues charging at ~16W
85% - Continues to charge at ~11W
90% - Continues to charge at ~8W
95% - Continues to charge at ~4W

[seerge]

@Djkcool as expected! Thanks for confirming.

[hogeling]

G14 2024, GA403UI - Only 80%

I don't know if this works for all models, but I only get the "Fully smart charged" text and heart icon at the battery tray icon when I set a valid value of 80% when the battery is full. Perhaps this might help others to find their valid values more easily.

[Velgus]

I took a bit of a closer look at the Windows settings vs. G-Helper settings.

So values less than 80% do work fine, but the BIOS doesn't report it to Windows correctly. So like, if you set it to 65%, it does stop charging, however, Windows still says it is charging via the icon in the System Tray (even though it isn't). This can further be seen from the "System > Power & battery" section, where it says "Smart charging is on" if you set it to 80%, but doesn't say so if you set it to any other value.

I personally think you should still leave the values that have worked for other people available from G-Helper, as the flexibility to set the battery charge to more levels outweighs Windows reporting it correctly. If you want to avoid complaints, maybe make the ability to ignore the limits a toggle in the Extra Settings section (that way you get fewer reports of it "not working", while people who are aware of this quirk can have access to the full options).

Are you sure that it starts charging after power off ?

You may be right regarding that. I've never actually tested, but noticed when I did things that required frequently restarting the device, the battery charge would start climbing past the set limit.

[seerge]

@Velgus i can allow 60-80 range for G14. But honestly whole reason I started this topic is cause i'm so fed up with accusations and insults in my side from people who just don't understand how limit work (i.e. that it's just a BIOS setting, not something app is managing) so I try to restrict UI only to options that are 100% supported. And MyASUS supports only 80% :|

[Velgus]

That's fair, but like I mentioned, I think a separate toggle will help with that.

So like default to restricted values to what is 100% supported (so just 80% on the 2024 G14), but provide a way to unlock it. Maybe it can even be a Power User option (something like "ignore_charge_limit" : 1) that requires manually editing the JSON. That way everyone is happy, and you don't even have to worry about having specific "supported ranges" on each device, just stick with what MyASUS supports by default.

[seerge]

@Velgus ok. I have just pushed 0.176 where I have moved G14 2024 to "60-80" group. So you can set anything from 60 to 80 same as for TUF / G16 2024. Lets see what feedback it will get

[A380FatLiner]

Are you sure that it starts charging after power off ? Cause how 2022 model behaves (and most of other devices) - they reset all settings (including charging limit) when you reboot - i.e. the moment you start it again, it would start charging. But not before.

As for 2021 model GU603HR, I noticed that MyASUS itself cannot set the charge limit correctly. As I set 60% or 80% limit in MyASUS and then restart to BIOS, charging starts. Then exit BIOS and boot into Windows, charging stops at 59.5% or 79.5%.

[anhkhoa0906]

Hi Seerge,

TUF A15 FA506IHR - MyAsus only have two mode, are 80% and 100%. But when I tested with GHelper, this is the results:

40% - Continues to charge
45% - Continues to charge
50% - Continues to charge
55% - Continues to charge
60% - Stops charging
65% - Stops charging
70% - Stops charging
75% - Stops charging
80% - Stops charging
85% - Continues to charge
90% - Continues to charge
95% - Continues to charge

Hope this will help you in this project. Thanks!

[lordcookies87]

2023 TUF A15 FA507XI - Only 80% and 100% work. Thanks for your work!

[seerge]

@lordcookies87 ok, good to know. So even 60% does not work. Correct ?

[lordcookies87]

Correct, 60% does NOT work.

[AnFlare]

Correct, 60% does NOT work.

That's not true. It just does not display "Smart charging" icon in modes other than 80%.

[IlyaDin]

ROG Strix G18 G814JVR
60% - The mode works well
65% - The mode works well
80% - The mode works well
I haven't tested other modes

My old man Asus N550J does not support charge limitation, unfortunately

[Shirasagi0012]

TUF Gaming A15 FA507XI - AMD Ryzen 9 7940H(S) & RTX 4070 Laptop

In MyAsus, there is only an option to enable or disable charge limits (80%). When using the limiter in MyAsus, a "Fully smart charged" message and a heart icon appear in the battery tray. However, when using G-Helper's charge limiter and setting the limit to any value other than 80%, this icon does not show up.

Here are the results:

40%~50% - Continues to charge
55% - Stops charging
60% - Stops charging
65% - Stops charging
70% - Stops charging
75% - Stops charging
80% - Stops charging
85%~95% - Continues to charge

Thank you for your hard work on this project. It's greatly appreciated!

[AnFlare]

@seerge
First of all, thank you for this awesome app, it's really a must-have!! 🤩

MB details and BIOS, same specs

I double this answer. The @lordcookies87 answer (a bit above) about only 80% limit working isn't true, all limits 55% through 80% including them - work nicely, except for the fact "Smart Charging" icon with heart just isn't showed. It is displayed for 80% limit exclusively. Other than that, everything works: orange light becomes white, the charging stops, tooltip on hover displays "...% remained".

Frankly speaking, me too, I thought earlier only 80% works 😅
But no.
May be it's worth leaving a notification for user that though the "Smart charging" icon isn't present, in reality everything works as intended? But it's up to you, obviously.

Second, I found the energy bolt icon on the battery means not "charging", but rather "plugged in".

Third and the least, I found a little bug Microsoft has left for us 😁

This tooltip in popup window displays "Charging" no matter what, not reflecting the real charging state.

[seerge]

@AnFlare G-Helper doesn't control charging or any of those notifications anyhow directly.

It just runs same command as MyASUS (Asus Optimization Service) under the hood to tell BIOS to maintain specific value as a limit. That's it.

Thanks for confirming that only 55-80% limits work on your device. It seem to be default for all TUF models.

[AnFlare]

@seerge
May I ask one question then? Is the 80% limit more hardware friendly to set than 55%, 60% etc., as they made icon for 80% only? Or it doesn't really matter?
My notebook works 99.9% of time plugged to the wall, btw.

[seerge]

@AnFlare i don't think there is much difference. You see smart charging icon only at 80% cause asus driver emits special notification back to windows only in that case (most probably cause in myasus you can't set anything else anyway)

[Niloy-Sarker]

TUF F15 506LH - i5 10300h & GTX1650

55% - Stops at 54.5
60% - Stops at 59.5
65% - Stops at 64.6
70% - Stops at 69.6
75% - Stops at 74.6
80% - Stops at 79.6
85% - Charging

Hope this helps.

[nauish]

ASUS TUF Gaming F15 (2023) i7-12700H & Nvidia RTX 4060 Laptop
Supports any limits

Update, reference in the reply
40%: Stops charging✅
45%: Stops charging✅
50%: Stops charging✅
55%: Stops charging✅
60%: Stops charging✅
65%: Stops charging✅
70%: Stops charging✅
75%: Stops charging✅
80%: Stops charging✅
85%: ✅(Stopped charging and charging LED turned white, but no fully charged indication in Windows)
90%: ✅(Stopped charging and charging LED turned white, but no fully charged indication in Windows)
95%: ✅(Stopped charging and charging LED turned white, but no fully charged indication in Windows)
100%: ✅Fully charged

[seerge]

@nauish interesting, you are the first TUF user with all limits working.

Can you double check if extreme options like 50% and 90% work ?

[nauish]

I haven't used 90% and will report after work, but I'm sure that 50 percent works, it's my default since I started using G-helper, on that note 45, 55 and 60 works as well.

[nauish]

@seerge update: here's my laptop correctly limited to 40, will try and test other value and reply to this thread as well.

update:
40%: ✅
45%: ✅
50%: ✅
55%: ✅
60%: ✅
65%: ✅
70%: ✅
75%: ✅
80%: ✅
85%: ✅(Stopped charging but no fully charged indication in Windows, Charging led turned white)
90%: ✅(Stopped charging but no fully charged indication in Windows, Charging led turned white)
95%: ✅(Stopped charging but no fully charged indication in Windows, Charging led turned white)
100%: Fully charged

When it's correctly limited. Once it's charged to the limit, the indicator turns white, the system dialog will show "Smart charged fully (Not sure the exactly English translation here)", and G-Helper won't show wattage.

Got lazy and only take a photo when it stopped charging at 90

When I raise the limit, it turns orange and start chaging

[dexprexxtion]

ASUS TUF Gaming A15 FA506IHRB Ryzen 5 4600H & Nvidia GTX 1650 Laptop

Using G-Helper, I can set the limit from 40% to 100% (the slider provides these values)

40% - Charging (the current charge % is 67)
45% - Charging (the current charge % is 67)
50% - Charging (the current charge % is 67)
55% - Stops charging
60% - Stops charging
65% - Stops charging
70-85% - Stops charging

It seems like charging continues when the limit is lesser than 55% even though the charge is higher than the limit. However, a limit of 85% to 90% works.

[Ripley404]

ROG Zephyrus M16 (2023) GU604VZ (Intel Core i9 13900H & Nvidia RTX 4080M)
GHelper Version 0.173.0

50% - At 50% it charges then it stops at 50.3% and doesn't charge from there
55% - Charges from 50.3% to 54.2% and stops charging
60% - Charges from 54.2% to 59.2% and stops charging
65% - Charges from 59.2% to 64.1% and stops charging
70% - Charges from 64.1% to 69.0% and stops charging
75% - Charges from 69.0% to 73.9% and stops charging
80% - Charges from 73.9% to 78.9% and stops charging
85% - Charges from 78.9% to 83.8% and stops charging
90% - Charges from 83.8% to 88.7% and stops charging
95% - Charges from 88.7% to 93.7% and stops charging

It seems that the Slider is working as intended and even shows the Windows battery tray with the message "smart battery health charging" icon, Hope this helps, and thank you for this project!

[ScottN13]

I have just announced on r/AsusTuf about this. GJ seerge!

I will do my part when i get home!

[plotsklapps]

I'm glad I'm finally able to help with something. I'm on Asus ROG Flow X13 2023 with AMD Ryzen 9 and RTX4070.
Can already confirm that 80, 85 and 90% are working fine, laptop stops charging and goes from orange to white LED. Will today charge at various levels, starting from 50% and edit this comment as I go.

• 50% Stops charging, led turns white
• 55% Stops charging, led turns white
• 60% Stops charging, led turns white
• 65% Stops charging, led turns white
• 70% Stops charging, led turns white
• 75% Stops charging, led turns white
• 80% Stops charging, led turns white
• 85% Stops charging, led turns white
• 90% Stops charging, led turns white
• 95% Stops charging, led turns white

Cheers.

Last edit: Guess I'm a happy customer, thanks for this AMAZING work.

[ChaseGrant]

TUF Gaming A16 Advantage Edition (2023) [FA617NS]

80% - working with heart icon
85% - working no icon
90% - working no icon

[ChaseGrant]

Sure. Will have to run my battery down though so it might take a bit

[KHP86]

I also have the same model [FA617NS] UEFI Version 414 (Latest). I would like to contribute to this thread. @ChaseGrant I hope you don't mind.

The verified values I have marked with a ✅.
The unknowns I have marked with a ❓.

I'm currently discharging and will fill in the gaps as I go.

40% - Update verified working - ✅
45% - Update verified working - ✅
50% - ✅
55% - ✅
60% - ✅
65% - ✅
75% - ✅
80% - ✅
85% - ❓
90% - ❓
95% - ❓
100% - ✅

[seerge]

@KHP86 great, so it's typical for all TUFs.

[ChaseGrant]

Confirmed that everything from 40% to 80% also work on mine

[VSReyden]

85% - ❓
90% - ❓
95% - ❓

I've tested it. Charging is over at selected threshold but without heart icon. Asus TUF A16 FA617NS G-helper 0.173.0

[flemesre]

2021 Zephyrus G15 (Ryzen 9, 3070):

40% OK, stops charging
45% OK, stops charging
50% OK, stops charging
55% OK, stops charging
60% OK, stops charging
65% OK, stops charging
70% OK, stops charging
75% OK, stops charging
80% OK, stops charging
85% OK, stops charging
90% OK, stops charging

Seems like the 2021 model also supports every increment of 5%.

[TurboWalker]

2023 ROG Zephyrus M16 - GU604VY (Intel Core i9 13900H & Nvidia RTX 4090M)
All limits are working
(Side topic: When on 65W USB-C power delivery (example for Lenovo laptops) the laptop tends to loose and discharge (just on internet browsing), and then charge again after 2% points below the threshold without keeping the charge level basically making multiple recharges every 15-20 min. I suspect it is not related to G-Helper, and its just the laptop behavior, as with the proper 280W ASUS charger there is no problem on idle/browsing.

[seerge]

@TurboWalker

Side topic: When on 65W USB-C power delivery (example for Lenovo laptops) the laptop tends to loose and discharge (just on internet browsing

It's normal for most devices, they don't have a usb-c passthrough and run from battery power when you are on usb-c constantly charging it.

[TurboWalker]

Thanks, after I realized it I just set it to 40% on USB-C to have a peace of soul that I'm not destroying my battery.

[Batu33TR]

Hi, seerge!

2024 TUF Gaming A15 (FA507UI-LP126)
Limits working between 55%-80%
But the smart charging phrase is only shown by Windows when it's limited to 80%
Here how much it charges at the limits.

40% - Not working
45% - Not working
50% - Not working
55% - Charging stopped at 54.5%
60% - Charging stopped at 59.5%
65% - Charging stopped at 64.5%
70% - Charging stopped at 69.3%
75% - Charging stopped at 70.5%
80% - Charging stopped at 79.9%
85% - 95% Not working

[mlcaraldi]

Hello @seerge!
ROG Zephyrus G14 GA4011V - 2021
Haven't seen any mentions to "Smart charging"

40% ok - stops at 39%
45% ok - stops at 44%
50% ok - stops at 49%
60% ok - stops at 59%
70% ok - stops at 69%
80% ok - stops at 79%
85% ok - stops at 84%
90% ok - stops at 89%
95% ok - stops at 94%
100% ok - stops at 99%

[Extraordinarist]

ROG Zephyrus M15 2020 works all the way from 40% to 100%

[FilipLac]

Flow x16 2023 (I9 with RTX 4060) all charging options work as they should. Not sure about charging LED (since I didn't check that), but even in sleep/hybernation/shut down the set option works still.

[STRIKERalone]

TUF A15 FA506ICB (2021) (r5 4600h + rtx 3050) bios ver. 307

40% - ❌
45% - ❌
50% - ❌
55% - ✅ stopped at 54.5%
60% - ✅ stopped at 59.5%
65% - ✅ stopped at 64.5%
70% - ✅ stopped at 69.5%
75% - ✅ stopped at 74.5%
80% - ✅ stopped at 79.5%
85% - ❌
90% - ❌
95% - ❌Seems like system count 95% as 100% as secure measure to prevent battery overcharge within those last 5%. Even moving slider to the 100% did nothing after it stop charging on 95% and said that it's 100% already.

[ASURA715]

ROG Strix Scar 17 (2023) G733PZ
(R9 7945HX+RTX4080)

40% ok - stops at 39%
45% ok - stops at 44%
50% ok - stops at 49%
60% ok - stops at 59%
70% ok - stops at 69%
80% ok - stops at 79%
85% ok - stops at 84%
90% ok - stops at 89%
95% no - starts charging at 95%

[EvilKilla]

Hi Serge. On my ROG Zephyrus G14 2023 GA402XZ (7940HS + RTX 4080) all limits are working✅

Decimal places are displayed, but up to 80% it always shows xx.0% and after 80% xx.1%. (e.g. ..., 78.0%, 79.0, 80.0%, 81.1%, 82.1%, 83.1%, ...)

[RansyZiix]

TUF Gaming A16 - FA617XS
(R9-7940HS/RX7600S/Bios ver. 313)
✅ Supports any limits ✅

[Velgus]

Just a suggestion for the way people can test whether it's "officially" supported (ie. the BIOS reports to Windows) vs. unofficially "works" but isn't technically supported - maybe ask users to specifically check for whether Smart Charging gets enabled in "System > Power & battery" settings.

The settings page updates instantly when you change the charge limit, so users can just open it, and check each charge limit to see when it appears and when it doesn't.

[seerge]

It's actually separate things

• "Smart charging" icon in windows, is something Asus System Control Interface can send to windows as a notification. And it happens only when limit is exactly 80% (on almost all models that I have seen).
• Actual charging limit i.e. firmware stops device from charging - the only way to check if it's working, is literally observe if device keeps charging after reaching the limit set :) (by looking at orange LED or at charge rate in the app itself)

[BearDarCharlie]

ROG FLOW Z13 (2022) (i7-12700H+3050)

60% ok - stops at 59.5%
70% ok - stops at 69.4%
80% ok - stops at 79.3%
85% ok - stops at 84.1%

Is there a way to design it so that if the current battery level is 90% and the G-helper is set to limit it to 80%, it will switch to power supply directly without draining the battery down to 80%?

[seerge]

@BearDarCharlie Thanks.

As for your question - no, charge limit is just one simple command that app can run on start to tell BIOS / firmware to maintain this charge value later :)

[Aries2050]

Chine model:天选4 锐龙版
ASUS-TUF-Gaming-A15-2023 - FA507XV
(R9-7940H/RTX4060/Bios ver. 313)
This configuration is only sold in the Chinese mainland, and both the software and the SN code search results on the ASUS website show the model as FA507XV. However, the model images displayed on the ASUS websites for the Chinese mainland region and other regions are different.
The website for this model in mainland China is: https://www.asus.com.cn/laptops/for-gaming/tuf-gaming/asus-tuf-gaming-a15-2023/helpdesk_download/?model2Name=FA507XV
40% - ❌
45% - ❌
50% - ❌
55% - ✅ stopped at 54.5%
60% - ✅ stopped at 59.5%
65% - ✅ stopped at 64.5%
70% - ✅ stopped at 69.5%
75% - ✅ stopped at 74.5%
80% - ✅ stopped at 79.5%
85% - ❌
90% - ❌
95% - ❌

[ichephe]

Hi Seerge, new behaviour on GHelper disables me from selecting 55% charge (previously worked for me)
Can we have it back :)
ASUS TUF A15 2023 FA507NU

[seerge]

@ichephe hello. As most TUFs support 60-80 range only, to keep things simple and easy to communicate I have set it same for all TUF models. If I will be doing this individual per model - it will be a mess. There is no practical difference between 55 and 60 for your battery health at all.

[budzabu2]

Hi, please do not remove 40% option. It is working flawlessly on Asus Strix G16 (2023) model, G614JU, 328 BIOS. It is usefull because if laptop resets due to for ex. overclocking, it recharges above limit set , be it 40,60 or 80% until I enter Win after password input. It will go to 100% that way.
I am working with batteries and there is nothing wrong for it to be at 10% charge, anything above 50% is not optimal for long shelf life, when not used.
BTW, my first message and great piece of code that you made here!