How do people log battery performance data for those scientific looking charts in reviews and YouTube videos?
How do people log battery performance data for those scientific looking charts in reviews and YouTube videos?
For example, I came across this YouTube video in which the author tests a whole bunch of batteries and displays a series of bar charts showing each battery's performance in various categories. How do content creators capture and log battery output like that? Is there a specific tool that plugs into a PC or records to a MicroSD card or something?