How to Make a Polarity Tester Out of a AA Battery

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Video shows you how to cheaply construct a 3-9v polarity checker out of a discarded AA battery. The parts can be
found in a disposable cameras.



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    4 Discussions


    Reply 7 years ago on Introduction

    Sure, I was going to do that at first but, I wasn't sure if I had all of the pics
    but I will certainly try! If not I will keep that in mind in my other videos.