Simplest protocol to limit data usage

Looking for a port and protocol that is simply lat, long, id...called with GET

https://www.traccar.org/osmand/

If you leave out the extra parameters will it fail? I see timestamp, hdop, etc..

It won't.

Thanks!

Ok now I go and complicate things, battery level is kinda important for this application and osmand does not have, what might be the next best choice?

OsmAnd does have battery level.

Oh the sample osmand example did not show it, but again thanks!

In osmand protocoll you can send want you want :

http://demo.traccar.org:5055/?id=123456&lat=xxx&lon=yyy&batterylevel=99&missiontime=1:02:30

Greetings Bernd