I came across a Gizmodo post with an eye-catching photo of a disemboweled 9V battery – apparently taken from the Axe Collector source post, “Why I Never Pay For “AAA” Batteries“. Axe Collector has ...

Ever wondered why some batteries are labelled AA, AAA or even AAAA? The naming system goes back to the early days of radio, when ‘A’ batteries powered low-voltage circuits and ‘B ...