Energy Density Test | I Donut Believe

Download the full VTT report at: https://idonutbelieve.com Since the day we announced Donut Battery, no question has come up more often than this one: how much energy does the cell actually hold for its weight? After what may have felt like forever, we put it on a scale. VTT weighed the cell, measured its dimensions, charged it fully, discharged it at room temperature and logged every watt-hour that came out. Watch the video for the result, and download the report if you want to check the full process yourself. https://donutlab.com