How to organize background activity in Cordova application?

Question

phonegap

I'm developing a Cordova application that sends POST requests to a server - whether the application is currently active or not.
CordovaActivity before super.loadUrl starts service startService(new Intent(this, MainService.class)); After that, the service stays in the background indefinitely (as I understand it). Have I implemented the application's background activity correctly?
It may be necessary to use a background plugin like https://github.com/Red-Folder/bgs-core, but I still don't fully understand what these plugins do and how to work with them.