Zinc Air Battery Tester
The RAYOVAC electronic tester allows you to accurately check the level of battery consumption. Using the tester is very easy-just put the battery into the metal part of the tester, and on the LCD display we will see a graph showing the battery level.
The Tester has a tray (2 separable chambers) for storing the battery. The solution ensures that the batteries do not come out of the way and do not contact the metal objects (when transferring the battery "loose" e.g. in the pocket), which could lead to a short circuit.
The Tester can be used as a keychain (it has a chain that allows to attach it to e.g. keys).