Have you ever had a junk drawer full of batteries and odds n ends? It can be frustrating to try and figure out which batteries are still good and which ones are used or dead.
Here is a handy way of checking to see if the batteries are still good without hooking them up to a volt meter. By bouncing the battery on a hard surface you can hear a distinct difference between the dead battery and the new battery.
If the battery is a new battery the cells inside have a much greater density, so when you gently drop in on a hard surface, the battery has certain ‘thunk’ to it.
Compared to a dead battery when dropped from the same height, a dead battery will bounce two or three times because the density of the cells is far less.
Check out the video above, and stay tuned for more helpful tips about construction, renovations, tools, and just some general handy tips.