Review on Transparent Battery Storage Case For AA/AAA/18650 With AAA To AA Converter Cases - DUOFIRE by Michelle Wilson

I had been looking for a way to store all of my batteries that I use, for my blood pressure machine, pulse oximeters, and other medical devices, and this was great! They fit perfectly, and I still have room to spare for any new ones I get! I think the cool thing had to be that the case that you could put on your AAA batteries, would turn them into AA batteries. That definitely will save me money! After I bought 2 of these, I saw Best Buy was having a sale on batteries. Instead of buying one of each kind of battery I bought 2 boxes of AAA since I could use the sleeves to convert them!