Sport defaults to custom battery mode

[Bradleyd]

@jjorgemoura, Other people can verify, but I believe this is a ‘feature’ of the custom battery mode to use the custom mode if there is any change to the default settings ( such as GPS quality, screen off in 10s, etc…). As a test, try starting a training in custom battery mode, with all the default settings, you can end|discard that training, then start a new training. If my hunch is correct, the battery mode should now use the Performance option.