https://www.baldengineer.com/tag/aaRecent content in AA on Bald EngineerHugoen-USThu, 18 Jan 2018 20:58:13 +0000https://www.baldengineer.com/9v-battery-energy-density.htmlWed, 23 Mar 2016 13:00:53 +0000https://www.baldengineer.com/?p=5869Previously I wrote up why the 9V battery sucks. As I thought more about that post, I realized, I never explained how much energy is in a 9 V battery versus say a couple of AA batteries. For this post, I am going to break down the energy stored in a 9 V battery, the small rectangular kind and compare it to what you get with 6 AA batteries. Yes, it takes up a little more space, but you might be surprised by the difference.