Hopefully you already have a decent OBD2 reader and
not one of the $5 cheapies for best results.
Install Torque Pro for Android - US$4.95
https://play.google.com/store/apps/details?id=org.prowl.torque
If you're familiar with Github at all, finding and grabbing the raw files might be easier for one to understand. The basics (though not exceptionally complete and missing some details) can be found here:
Basics of Setting up Gauges for Torque Pro
https://jejusoul.github.io/OBD-PIDs-for-HKMC-EVs/
A Direct Link to the referenced Niro EV (and Kona EV) specific PID files is here:
https://github.com/JejuSoul/OBD-PIDs-for-HKMC-EVs/tree/master/Hyundai Kona EV & Kia Niro EV/extendedpids
Setup Steps
You'll need to download the (RAW) CSV PID definition files to your phone to tell Torque Pro how to communicate with your car by Importing the additional configuration data (via CSV) into Torque Pro.
You can browse through the CSV's and look at the contents to see if files contain the data you want to see. I have recommended a few to start with below.
If you browse to the above URL on your phone, click the links into each of the CSV files you want to import, and use the "
Raw" button to save the CSV's rather than trying to copy and paste the data.
NOTE: There are more than a few ways to download and move files around on your phone. I personally recommend using a file manager app to transfer the download(s) from /Downloads to /.torque/extendedpids
However, if the path /.torque/extendedpids doesn't yet exist on your phone, you'll need to
create the subfolder and
then move the files to that folder.
Recommended files to start with (raw links you can use to grab directly via phone browser):
002_Kona&Niro_EV_HVAC.csv
003_Kona&Niro_EV_BMS.csv
005_Kona&Niro_EV_Extra_Guages.csv
If you want crazy levels of details for each of the battery cells (an additional 98 unique pids, not necessary) you can also grab:
004_Kona&Niro_EV_BMS_cell_data.csv
MY2020+ Compatibility Note: At the time of this writing YMMV as these PIDs may have not been tested or updated for MY2020 and newer vehicles if you happen to have a newer model year. They all work pretty well with only a couple of noted exceptions on the US 2019 Niro EV. The "Aux Battery" (12V) related PIDs (not listed in the recommended CSV links above) did not seem to be accurate for my vehicle.
Basic Torque PID File Import Steps
Open Torque Pro app and Import the files you downloaded.
1. Navigate to (Gear Icon) > Settings > Manage Extra PIDs / Sensors
2. If there are already PIDs on this page, select (Menu) and pick Clear List
3. Select (Menu) and pick Add Predefined Set
4. Pick the file(s) you moved. If you are unable to find/see PID files, you may not have put the files in the correct location.
Hope this helps get you started.