If it suits your needs fine...
This thread has warped. My comments are about testing not criticizing individuals on how what where when why they are satisfied with their batteries or not.
But to criticize "How To Test" suggestions is, shall we say a bit presumptuous?
When a person does not wish to "test" or even think about a subject that is their own prerogative. Fine. But it's quite another matter to criticize teaching or learning. Myself when I encounter a subject that is of no interest to me, I save time and ignore it...