YSK that there is an easy way to tell if a AA battery is dead. Drop the battery onto a hard surface from 7-10 cm(3-5 in) .high. A charged battery will hit the ground with a thud and either stand straight up or fall directly over. A dead battery will bounce.

YSK that there is an easy way to tell if a AA battery is dead. Drop the battery onto a hard surface from 7-10 cm(3-5 in) .high. A charged battery will hit the ground with a thud and either stand straight up or fall directly over. A dead battery will bounce.

YSK that there is an easy way to tell if a AA battery is dead. Drop the battery onto a hard surface from 7-10 cm(3-5 in) .high. A charged battery will hit the ground with a thud and either stand straight up or fall directly over. A dead battery will bounce.
from /r/YouShouldKnow