In this tutorial Dave explains how to precisely measure and calculate the remaining (or wasted) energy capacity in a battery using the graphical analysis technique using a spreadsheet.<br />The differences between constant power and constant current loads and when to use them is discussed.<br />Also, the importance of ESR and measuring the battery voltage under load is demonstrated. <br />This is a particularly relevant to the Batteriser product and proof is provided that shows that even over the entire current range, the wasted energy in a battery can be no better than a few 10's of percent for a 1.1V cutout voltage. Blowing the batteriser claim of 80% wasted energy out of the water.<br />Forum: http://www.eevblog.com/forum/blog/eevblog-772-how-to-calculate-wasted-battery-capacity/<br /><br />All of my battery related videos are here: https://www.youtube.com/playlist?list=PLvOlSehNtuHtj5Ubhx7govoBfNkyUO4Pp<br /><br />DIY Constant current load: https://www.youtube.com/watch?v=8xX2SVcItOA<br />Battery Capacity Tutorial: https://www.youtube.com/watch?v=R8hTQXqURB4<br />AA Battery Capacity Measurement: https://www.youtube.com/watch?v=uT4hKd66UY4<br />Batteriser Debunking Video: https://www.youtube.com/watch?v=4iEshd6izgk<br />LiPo Battery Discharging: https://www.youtube.com/watch?v=ln8Mlz4NsW8<br /><br /><br />EEVblog Main Web Site: http://www.eevblog.com<br />The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2<br /><br />Support the EEVblog through Patreon!<br />http://www.patreon.com/eevblog<br /><br />EEVblog Amazon Store (Dave gets a cut):<br />http://astore.amazon.com/eevblogstore-20<br /><br />T-Shirts: http://teespring.com/stores/eevblog<br /><br />Donations:<br />http://www.eevblog.com/donations/<br />Projects:<br />http://www.eevblog.com/projects/<br />Electronics Info Wiki:<br />http://www.eevblog.com/wiki/
