So many times we have batteries at home which are partly used, but since we don't know how much of power they have we just throw them off. Here's a product that allows you to test the battery available in A, AA, AAA and host of other batteries so that you waste the least.
Quick & Easy testing of the old and partly used batteries
Following can be tested 1.5V 'A', 1.5V 'AA', 1.5V 'AAA', 1.5V 'C', 1.5V 'D', 9V Battery
No more wasting old batteries
Must have home accessory