Effect of GPS tracker on flight time of P2

[BrzI]

Hi folks,

I am considering adding a GPS tracker. Currently I get 16-17 minutes with a 600mW transmitter, 3D Gimbal, mini iOSD and GoProHero. How much flight time could I expect to lose by adding the GPS tracker ?

Thanks

 

[OI Photography]

I depends on which tracker you mean exactly, but most seem to be around 50g which wouldn't quite eat a full minute of flight time.