@Wingchundub,

Did you at least install the next version to see if that helps with you battery drain?????
I have tested this app for some time now and have not run into a battery drain.
But I do have it on a cable in the car as I am using it. I would think you are using it that way too.
That would be the proper way to use the GPS or any GPS app for that matter.
Plus if you are using traffic with data and what ever else you are running the battery would run down faster.
So when you are driving plug it in to the lighter and no battery drain.......
If that is not the way you use TomtomGo then have a power bank with you.
The app is a lot heaver than runkeeper and with use more power.
Like others have said check you setting on your phone to optimize the battery use.
Or if that does not work then try one of the other GPS app's here and see if it is better.

Anyway have a nice day...........