Vktech&reg; 12pcs Battery Convertor Adapter Size AAA R03 to AA LR6 Battery Convertor Case Holder (Yellow) Compact in size and light in weight, 100% brand new and high quality Converts AAA battery to AA battery Perfect for electronics and emergency situations A gadget to keep close at hand, at home, at the office, etc Easy to use, just stick the AAA battery in the converter and it's the same as a AA battery, Size: Ap