EliteBook x360 1030 G8 – Battery Health Manager 80% charge limit not working

[EliteUser1030G8]

Hello,

I am using an HP EliteBook x360 1030 G8 with Windows 11 Pro.

In the BIOS under
Advanced → Power Management → Battery Health Manager
I have selected “Maximize Battery Health” to limit battery charging to 80%.

Even though the setting is saved correctly (I have checked it multiple times, powered the device off and disconnected AC power), the battery still charges almost to 100% (currently about 40,510 mWh out of 41,141 mWh).

Additionally, I installed the latest HP Power Manager.
There, I can select “Optimize my battery health”, but the selection is not saved – after closing and reopening the tool, the option is unchecked again.

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What I have already tried:

• Updated the BIOS to the latest version

• Reset and re-saved the Battery Health Manager setting in BIOS several times

• Turned off Windows Fast Boot

• Reinstalled HP Power Manager and HP System Event Utility

• Also tested the behavior while staying in BIOS (without Windows running) → the battery continues to charge past 80%

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Expected behavior

• Battery charging should stop at around 80% (about 32,900 mWh)

• Windows should display “Plugged in, not charging” once 80% is reached

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Actual behavior

• The battery charges up to nearly 100% of the current full charge capacity, both in Windows and even while sitting in BIOS.

• Neither the BIOS setting nor the Power Manager option seem to have any effect.

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Question

• Is the Battery Health Manager / 80% charging limit officially supported on the EliteBook x360 1030 G8?

• If yes: Is there a firmware / Embedded Controller update or another fix to make the 80% limit actually work

Battery Report values:

• Design Capacity: 54,000 mWh

• Full Charge Capacity: 41,141 mWh

• Currently: 98% (40,510 mWh)

Thanks a lot for your help and any guidance!

[resistencia]

Hi @EliteUser1030G8 

the battery is charging at 80%, but Windows understands that the battery is at 100% and displays that value but in reality the battery is charging at 80%.

HP Business Notebook PCs - HP Power Manager | HP® Support

What to expect from changing the default setting to Maximize My Battery Health

Changing the default setting to Maximize My Battery Health causes the following:

• This setting results in a reduced run time between charges, because it limits the charging capacity of the notebook’s battery to 80% of the currently available full charge capacity.

• You will continue to see the battery charge at 100% in the Windows icon tray, with 100% representing the new, adjusted full charge capacity.

• The change to Maximize My Battery Health has no impact on the system performance.

[EliteUser1030G8]

I thought so as well, but if I look at the battery report it shows now 40.002 mWh full charge capacity and a 100% charge to 40.895 mWh. When I look at the battery report of my old HP notebook, where I applied the the same 80% setting the battery report shows 47.335 mWh full charge capacity and a 78% charge to 37.341 mWh.

So it looks like on the old HP the 80% max charging works compared to the full charge capacity while on the EliteBook x360 1030 G8 it always charges to full charge capacity, despite the 80% setting...

[resistencia]

You can not make that comparison battery over time loses its charge capacity, and can not be 100% never always deteriorates a battery and can not compare a laptop with the other.

For example if the total charge capacity reaches 60% windows shows a 100% charge but the battery will last the hours it was designed to last because it lost its charge capacity at 60% and if you apply in the BIOS the 80% that will be 80% of the 60% of its charge capacity.

[EliteUser1030G8]

Thank you for your reply, but I believe there is a misunderstanding.

I am not comparing absolute runtime or capacity between two different laptops.
I am only comparing how the 80% charging limit behaves relative to the current Full Charge Capacity.

To make this clear, here is a table comparing my new EliteBook x360 1030 G8 with my old EliteBook x360 1030 G2, using the numbers from the battery reports:

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Battery Capacity and Charging Behavior

Laptop	Design Capacity (mWh)	Full Charge Capacity (mWh)	Battery Health (%)	Expected 80% limit (mWh)	Actual charge reached (mWh)	Actual charge reached (% of Full)
EliteBook x360 1030 G8	54	41,141	76%	32,913	40,51	98.5%
EliteBook x360 1030 G2 (old)	56,999	47,355	83%	37,884	37,041	78.2%

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What this shows:

• On the old G2, the BIOS “Maximize Battery Health” setting worked correctly:
  charging stopped at ~78% of the Full Charge Capacity (≈ 37,000 mWh).

• On the G8, the setting has no effect:
  the battery always charges to almost 100% of the Full Charge Capacity (≈ 40,500 mWh) even though the BIOS option is enabled.

This is not about the loss of total capacity due to aging (I understand that very well) – it’s purely about whether the 80% limit is enforced.

So the core question remains:

On the EliteBook x360 1030 G8, why is the “Maximize Battery Health” option not limiting charging to 80% of the current Full Charge Capacity, as it did on the older G2?

Could this be a firmware/EC issue on the G8?

[resistencia]

Calibrate the batteries and then test outside windows by pressing the F2 key several times and test the battery.

[EliteUser1030G8]

Hi resistencia,

Thanks for your advice! I followed your suggestion and:

1. Calibrated the battery.

2. Ran the HP hardware diagnostics (F2 at boot → Battery Test).

Results:

• The UEFI Battery Test reported PASSED (battery condition OK).

• I then generated a new battery report in Windows to verify the charge behavior.

Despite the calibration, the battery still charges to 100%, even though Battery Health Manager is set to “Maximize my battery health” (which should limit charging to ~80%).

Battery report summary (13 August 2025):

• Design capacity: 54,000 mWh

• Full charge capacity: 41,649 mWh

• Cycle count: 235

• Max. reported charge level: 100% = 41,649 mWh

• Charging behavior (last full charge):

  • Battery charged to 100% instead of stopping at 80% (expected: ~33,200 mWh)

Let me know if you have any further suggestions or know if this is a known issue on EliteBook x360 G8 series. Thanks again for your support!

[resistencia]

Do you use Power Manager software to limit the charge?

[EliteUser1030G8]

Thanks for following up.

Currently, I do not have HP Power Manager installed – only the HP Support Assistant is on the system.

However, earlier in this troubleshooting process, I had installed and tested the latest version of HP Power Manager, and I also tested the 80% charge limit with and without it.

In both cases, the behavior was the same:

• The BIOS setting “Maximize Battery Health” was active,

• The battery continued to charge to 100% of the current Full Charge Capacity (approx. 41,649 mWh),

• The charge did not stop at 80% (approx. 33,200 mWh),

• In Power Manager, the option “Optimize my battery health” could be selected, but was not saved — the checkbox was always empty after reopening the tool.

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So to summarize:
Even without Power Manager installed, the BIOS-level setting has no effect on limiting battery charging to 80%.

I'm wondering if this is a firmware, EC, or driver-related issue on the EliteBook x360 1030 G8 series.

Thanks again for your support.

[resistencia]

The problem is that all the values you mention are provided by programs that are used under Windows, and these may give invalid results.

You should check in Windows to see if smart charging is enabled. This is indicated by a battery icon with a heart next to it.