2 Sets Foam Flower Holder Bride Bouquet Bridesmaid Handles for Weddings. This item is a battery checker tester for 9V, D type,, AA, AAA, button battery. With it you can easily get the current volt of the tested battry, and know which batteries to keep and which to throw, place your battery between the two points of the battery tester, and the pointer display will indicate that whether there is a battery need to be replaced.
eBay