I really enjoyed this episode. Some of it I already knew, and most of it was new to me. I like when I know a little something when I start. It gives me more confidence in the new information. 

I have a couple of questions that I hope you wouldn't mind answering in a follow-up episode.

1.) What was learned in 2011 that completed our understanding of how batteries work?
2.) I forget my second question, but it was a good one. :(

As an aside, I have had really good results with Nickel Metal Hydride rechargeable batteries. They hold a charge for weeks and weeks with no noticeable drop in their run time, they store a good amount of energy (2200 mAh for size AA) and have a nice long runtime. I had one set of four AA batteries that I swapped back and forth in my flashlight (which takes two at a time) for almost five years. Sadly, I lost the flashlight with two of them in it, but I still have the other two in my Mintyboost, and they seem as good as ever.