I have just conducted tests with a battery I specifically discharged, and one tested to be full.
They are both AA's. Upon full discharge, I attempted a test on a steel stovetop. The test failed. Both batteries landed with a thud and stood up.
I further tested outside on concrete, because I reasoned that the steel plate had some 'give'. My hunch was correct. The discharged battery bounced when dropped from a height of an inch, the full battery landed with a thud when dropped from the same height. Both batteries toppled, but I attribute this to the imperfectly-flat concrete.
This technique is CONFIRMED. You must use an unyielding surface, and if there is any angle or imperfection, the standing portion of the test must be discounted. The only portion of the test that is functional is the 'bounce' or failure to do same.
Payment for this research can be made to
Laz A. Mataz
Under I-85 bridge at Pleasantdale Road
Doraville, GA 30340
ROFL! about your address for payment!
Please accept my thanks for so rapidly conducting said research! Very interesting.