You can use AAA batteries instead of AA by placing a small piece of tinfoil in the gap. : r/lifehacks
Test of Aerocell AA
The Journal
Test of Aerocell AA
Test/review of Aerocell AA | Candle Power Flashlight Forum
Mono battery, 1.5 V online at a good price – 320037: ProLux
Testing Popular AAA Batteries To See Which Is Better ValueThe Red Ferret Journal
Testing Popular AAA Batteries To See Which Is Better ValueThe Red Ferret Journal
Which AA Battery is Best? Can Amazon Basics beat Energizer? Let's find out! - YouTube
Bag of Small Domestic Dry Cell Batteries, Old Trash To Recycle. Isolated on White. Alkaline . Europe, UK AA and AAA Size Editorial Stock Image - Image of discarded, electric: 144020719