I had to change the battery once. You get about 3 hours on average per battery when doing a time lapse. I believe a picture was taken every 5 minutes... However I am not 100% sure...
Last Friday afternoon I had sometime to get a good detail in after (hopefully) the worst of the winter weather. It needed a little polish due to some water sports that had developed over the last few...
I would also like to say that the Pinnacle Black Label Synergy is the easiest wax I have ever used. Very easy to apply thin and whipped right away. Plus it will last for awhile! (Multi cars)