Does connecting a laptop battery cause the CPU to begin power throttling?

F5F Stay Refreshed Hardware Notebooks Does connecting a laptop battery cause the CPU to begin power throttling?

Does connecting a laptop battery cause the CPU to begin power throttling?

Does connecting a laptop battery cause the CPU to begin power throttling?

S

Swissjack
Junior Member

3

10-29-2021, 03:24 PM

#1

When the battery is connected to my laptop and I attempt to play a game, the CPU power drops drastically to 20-27 watts, despite normal temperatures (refer to photo). The throttle limit displays red PL1. Removing the battery cable resolves the issue completely, allowing smooth operation. This occurred after cleaning the laptop, possibly causing damage. It’s frustrating because I have to repeatedly unscrew the back panel, disconnect and reconnect the battery.

Specifications:
- 11th Gen Intel® Core™ i7-11850H @ 2.50GHz
- NVIDIA GEFORCE RTX 3070 Mobile GPU (Max-Q Variant)
- 32GB DDR4 RAM @ 3200MT/S
- Storage: Micron NVME MTFDKBA512TFH-1BC1AABHA
- Windows 11 Pro Version 24H2
- BIOS: HP T92 Ver. 01.17.01, 05/03/2024

S

Swissjack

10-29-2021, 03:24 PM #1

When the battery is connected to my laptop and I attempt to play a game, the CPU power drops drastically to 20-27 watts, despite normal temperatures (refer to photo). The throttle limit displays red PL1. Removing the battery cable resolves the issue completely, allowing smooth operation. This occurred after cleaning the laptop, possibly causing damage. It’s frustrating because I have to repeatedly unscrew the back panel, disconnect and reconnect the battery.

Specifications:
- 11th Gen Intel® Core™ i7-11850H @ 2.50GHz
- NVIDIA GEFORCE RTX 3070 Mobile GPU (Max-Q Variant)
- 32GB DDR4 RAM @ 3200MT/S
- Storage: Micron NVME MTFDKBA512TFH-1BC1AABHA
- Windows 11 Pro Version 24H2
- BIOS: HP T92 Ver. 01.17.01, 05/03/2024

L

laruej
Junior Member

5

10-29-2021, 10:19 PM

#2

This occurred after I opened the laptop to clean it, possibly causing damage. You may want to check the area around the battery and its connector for any visible signs of harm. Did you replace the thermal paste and pads on the cooling assembly?

L

laruej

10-29-2021, 10:19 PM #2

This occurred after I opened the laptop to clean it, possibly causing damage. You may want to check the area around the battery and its connector for any visible signs of harm. Did you replace the thermal paste and pads on the cooling assembly?

Z

Zosiapx
Member

61

10-31-2021, 12:11 PM

#3

When you refer to "battery," are you talking about the AC mains power source or the lithium battery inside the laptop? If you disconnect the battery from the motherboard, such as during a battery replacement, you might need to press a reset switch (found on Acer laptops) when opening the cover.

Z

Zosiapx

10-31-2021, 12:11 PM #3

When you refer to "battery," are you talking about the AC mains power source or the lithium battery inside the laptop? If you disconnect the battery from the motherboard, such as during a battery replacement, you might need to press a reset switch (found on Acer laptops) when opening the cover.

M

MrLarsvdh
Junior Member

6

11-08-2021, 06:46 PM

#4

I checked the area and found nothing out of the ordinary, yet I’m still not sure what to watch for. While cleaning, I just removed the dust and didn’t take the heatsink off.
The laptop battery wasn’t replaced, though it remains under warranty. My device is an HP Zbook Studio G8.
When I mention the battery, I mean the lithium ion type. I believe I’ve already reset it—probably by disconnecting the battery and holding the power button for 30 seconds, as I remember from my laptop.
I don’t think the power supply is the problem because the laptop works fine when the lithium ion battery is removed, so the issue seems connected to that.

M

MrLarsvdh

11-08-2021, 06:46 PM #4

I checked the area and found nothing out of the ordinary, yet I’m still not sure what to watch for. While cleaning, I just removed the dust and didn’t take the heatsink off.
The laptop battery wasn’t replaced, though it remains under warranty. My device is an HP Zbook Studio G8.
When I mention the battery, I mean the lithium ion type. I believe I’ve already reset it—probably by disconnecting the battery and holding the power button for 30 seconds, as I remember from my laptop.
I don’t think the power supply is the problem because the laptop works fine when the lithium ion battery is removed, so the issue seems connected to that.

C

cowcow4321
Senior Member

623

11-09-2021, 06:19 PM

#5

If I'm interpreting this site correctly, turning on the power button for half a minute after removing the battery will discharge any remaining energy stored in the capacitors and erase any leftover information from memory. This process prepares the system for a fresh start.

C

cowcow4321

11-09-2021, 06:19 PM #5

If I'm interpreting this site correctly, turning on the power button for half a minute after removing the battery will discharge any remaining energy stored in the capacitors and erase any leftover information from memory. This process prepares the system for a fresh start.