It depends upon what type of battery you are talking about. The common ones: 1/ Alkaline battery -- Used in Duracell¨ and Energizer¨ and other alkaline batteries. The electrodes are zinc and manganese-oxide. The electrolyte is an alkaline paste. 2/ Lead-acid battery -- These are used in automobiles. The electrodes are made of lead and lead-oxide with a strong acid as the electrolyte. 3/ Lithium battery -- These batteries are used in cameras for the flash bulb. They are made with lithium, lithium-iodide and lead-iodide. They can supply surges of electricity for the flash. 4/ Lithium-ion battery -- These batteries are found in laptop computers, cell phones and other high-use portable equipment. 5 Nickel-cadmium or NiCad battery -- The electrodes are nickel-hydroxide and cadmium. The electrolyte is potassium-hydroxide. 6/ Zinc-carbon battery or standard carbon battery -- Zinc and carbon are used in all regular or standard AA, C and D dry-cell batteries. The electrodes are made of zinc and carbon, with a paste of acidic materials between them serving as the electrolyte. You could also argue that the human body is a battery. It stores and discharges electrical energy as well. I think I covered them all.

A PASTE THAT contains electrons

Acidic acid i think its alkaline acid whatever you do don't attempt to open it. it will burn your skin

urine and boogers to make a paste and then the electricity travels through a small piece of plexiglass. This reaction powers the miniscule trolls inside the battery to run on their wheels producing your power.