Battery percentage on Jetson Nano


I am trying to use a battery pack that will plug into the barrel jack of the 4G Jetson Nano Developer Kit for a project that requires it to be portable.

My question is, how do I measure the battery percentage if it is possible, so that I can send a notification out from my Nano when the battery is low?

I have been having a hard time finding a solution or workaround for this situation, so any information or ideas will be very helpful.

Kind regards,

Moving this from the community feedback category to Jetson Nano.

hello paulamoruso,

please check /sys/class/power_supply/, there should be a sysnode called BAT, please check capacity for the battery percentage.


It seems there is nothing under power_supply.

Any ideas on what I should do about this?

Thanks again,

hello paulamoruso,

please refer to Jetson Nano Product Design Guide,
did you use module pin PMIC_BBAT to enable Nano’s power?