How much memory does the PowerTap computer have available? Philip Cowles March 30, 2018 19:43 Follow Joule has about 20 hrs of total memory Joule GPS has about 80 hrs of total memory Related articles Can I pair more than 1 power meter to my computer? What do VAM, Normalized Power, IF and TSS mean and what do I do with them? Why can't I download my Joule? Why isn't my PowerTap computer showing watts? Why do I have no display on my computer? Comments 0 comments Please sign in to leave a comment.