It fit as in the product information listed both four AA and AAA batteries or batteries properly clean. Each battery has its own mount that is, they fall also not around when less than four batteries in the box are. The storage boxes can also connect with one another laterally by clips. I already use the storage boxes for some time for replacement batteries in my camera bag and am very satisfied. Due to the different colors I can distinguish the fully charged with the dead battery. Use more recently home they kept my batteries. A really handy gadget.
