Usually it's an alarm field.
Where can I find the alerts I can get in this field?
It's just another attribute.
When does the system detect the battery failure?
To simulate the alert, I connected a device to a power source, let it sit for a while and then turned off the power source, simulating the battery failure, but the system did not generate the alarm.
That's up to your device.
I'm using J16
I use traccar, capturing the positions directly in the DB.
In which field do I get the action to disconnect the battery?
Would it be the "charge" field, as below??
{"status":64,"ignition":false,"charge":false,"blocked":false,"batteryLevel":16,"rssi":4,"distance":0.0,"totalDistance":6338420.694206946,"motion":false,"hours":1722545403000}