Originally Posted by
IamNed
I keep my iPhone 6 in a plastic Baggie in my pocket but have it announce every five miles. Interesting on the external battery as I have had no battery drain issues at all with Cyclemeter. A couple of weeks ago I did 100 miles with three 20 minute stops and a lunch. I had over 50% battery remaining.
I suspect having the display on is the bigger drain, but that is also my preferred way to use it. I can not hear its announcements sitting on my handlebars when at any speed over 15mph, I doubt I could hear it ever in a ziplock on my back.