Because there are so many different battery brands, it can be hard to choose which ones to purchase. Here's a few that we'd ...

In 1888, German physician Carl Gassner (1855–1942) developed the Leclanché cell, an early form of electrical battery, into what became the first zinc-carbon battery. It was dubbed the dry cell ...

As you can see after the break, he cleaned off the exterior corrosion and did a quick teardown of the dry cells, removing the remains of the zinc anode, now in the form of zinc oxide paste ...