Disabling auto shutdown on low capacity

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
1

Hi.
I’m using Nvidia Jetson NX SOM, Jetpack 4.4.1 kernel 4.9.
I would like to disable the auto shutdown at low battery capacity.
it’s currently set to auto shutdown at 2%, was I need to change the setting?

I change the UPower.conf parameters but it doesn’t affect it at all, the Jetson is still powered down when the battery capacity reaches 2%.

Do you another option to disable the auto shutdown?

2

Hi, I am moving your topic to the Jetson category for proper visibility.

4

Hi tomer5,

Are you using the devkit or custom board for Xavier NX?

How do you know it is configured at 2%?

5

Hi,
I verify It shut down the device at 2%, I success to change the UPower.conf “PrecentageLow=999” value but there was no change.
The “CriticalPowerAction=Nothing” also was set and the power was shut down automatically when the battery reached a capacity value of less than “1%” and the application operate auto shutdown.
I would like to reach the lower value of the electronic without auto shutdown.

6

It seems you are using the custom carrier board because we don’t have battery on the devkit.

Could you try to configure this as PrecentageLow=0 and check if it would still shutdown at 2%?

May I also know what’s your use case to do this?

7

We found a problem in our product battery calibration and we need to discharge it to the lowest voltage available by the hardware (~8.5V), currently, the % Capacity is not accurate, and the device automatically shuts down when the voltage is around 11V (with Battery false indication).

8

Since battery is not the default design on the devkit, we could not help to verify locally.

Do you know how the capacity % be calculated?
Read from any interface of the voltage?

It seems the auto shutdown work and it would be shutdown at 2%.
You may need to find the reason of the wrong capacity first.

Or you could try the following command to stop upower service.

$ systemctl stop upower
11

Thanks, Kevin,
This was helpful. the command kills the power service and allows us to discharge the battery with HW only.

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