Extending time between second low battery notification and hibernation

desbest · 09 Sep 2022

We've all seen these notifications if you use a laptop.

Extending time between second low battery notification and hibernation-battery-running-low.png

Extending time between second low battery notification and hibernation-battery-very-low.jpg

But my problem is that as soon as the second low battery notification appears, that my laptop goes onto hibernate in less than 5 seconds. How can I extend that time? What percentage value do I need to change my existing settings to?

Right now it's at the default settings, as defined by windows, that is typical of a freshly new windows installation.

I'm using Windows 10 21H2

See the screenshots below for more details. You can see my current advanced power plan settings below.

Extending time between second low battery notification and hibernation-advanced-power-options-window.png

Extending time between second low battery notification and hibernation-advanced-power-options-my-battery-settings.png

Try3 · 09 Sep 2022

Des,

"How can I extend that time?"

You need to increase your Critical battery level. You'll also find it useful to increase the Reserve & Low levels to suit the new Critical battery level.
- As you'll notice from the battery settings you illustrated , Reserve battery is a pre-defined notification only. No action is taken.

It sounds to me that your battery is getting worn out and is dropping rapidly as soon as the notifications start to appear.
I urge you to run a BatteryReport so you can find out the ratio of Full charge capacity to Design capacity.
- I suspect it is very low.
- If it is not very low then I'd say the battery has a defect.
So I think you need to buy a new battery.

Battery report syntax
[put in your own path in place of my D:\Desktop]

Code:

PowerCfg /batteryreport /output D:\Desktop\BatteryReport.html /Duration 1

Battery report - parameters of interest

Extending time between second low battery notification and hibernation-battery-report-main-parameters.png

You will want to work out the ratio
Full charge capacity / Design capacity

Best of luck,
Denis

desbest · 21 Jan 2023

Extending time between second low battery notification and hibernation-battery-report-extract.png

The ratio is 0.63

However a new power plan was delivered to my computer, probably from Windows Update.

Extending time between second low battery notification and hibernation-windows-unexpected-shutdown-reliability-monitor.png

It was probably due to what happened on my 5th day of using my laptop, following an unexpected shutdown from 2 weeks ago, when the laptop was attempting to hibernate whilst it had ran completely out of battery before it had the chance to fully hibernate, in the midst of lots of programs running at the same time (as well as a 2.4GHz wireless mouse).

Extending time between second low battery notification and hibernation-power-plans-my-acer-laptop-aspire-315-56.png

The one on the right is what Windows Update gave me (within the last 2 days, most likely today). Before there was only one power plan.

The only changes I had made was

Low battery level: 10% before and 15% after
Reserve battery level: 7% before and 10% after
Critical battery level: 5% before and after

I'll switch from the high performance plan to the balanced plan, to see if that helps, after a few weeks.

Update: 2 weeks later

Low battery level: 17% (+2)
Reserve battery level: 14% (+4)
Critical battery level: 7% after (+2)

Update: Another 2 weeks later

Low battery level: 19% before (+2)
Reserve battery level: 15% (+1)
Critical battery level: 7% (no change)

Update: Another 2 weeks later

Low battery level: 22% before (+3)
Reserve battery level: 17% (+2)
Critical battery level: 7% (no change)