Being a parent means building lots of toys and being the “some assembly required” on the side of a lot of boxes; and all those toys, swings, and bouncers need batteries, so obviously after you go through your first sixteen packs of AA batteries you start to think there has to be a better way. Rechargeable batteries are the solution and to get more out of my batteries I use these neat little sleeves that can turn my AAs in to Ds; one AA battery fits into a single D sleeve, and can give dual purpose to your single purpose AA.
