[Q] Battery drain when recording position via GPS topic

Hi guys, maybe you could help me out. I was thinking whether I could use this phone when riding a bike (on normal terrain, 90% roads) to track my position (via MyTracks, Strava etc.). Does anyone know how the battery behaves (I would like to see the map on the phone all the time) in such a regime? Or, could you make a test for me? No WiFi, data or anything, just GPS and position recording.
Thanks a lot!