GTIWUNG 12Pcs AA/AAA Cell battery Storage Case Holder Box, Plastic for Batteries and Rechargeable + AAA to AA Adapter Converter with Metal Contacts on Bottom

AAA to AA Adapter: convert the AAA battery to the standard AA battery size, the bottom of the adapter is not hollow, it’s sealed with the metal, it makes sure the good contact with the negative side. AAA battery can be converted to AA battery by the AAA to AA battery adapter, they play the functions on saving energy. Convenient and a perfect solution for both AAA and AA batteries. Keep your batteries organized and protected. The battery box made of sturdy plastic is perfect for storing and transporting batteries and batteries! The protective box can be flexibly used in the home, office, workshop, garage or as a photographic accessory! Several boxes can be plugged together! Package Includes: 12 x Battery Storage Cases（4 Cell）, batteries are not included; 12 x AAA to AA Adapter. Color: transparent. TIP: The battery Adapter Converter Case comes in a square plastic battery storage box, if you don't look closely, you might think this product is missing from the package.