A zinc–carbon battery is made up of a zinc outer canister that serves as both a container and negative terminal. The positive terminal is a carbon rod surrounded by a mixture of manganese dioxide and carbon powder with an electrolyte of paste of zinc chloride and ammonium chloride dissolved in water. A typical A, AA, C, or D zinc-carbon cell has an electromotive force (emf) about 1.5V. Zinc-carbon batteries are not rechargeable.
Written by: NJ2X, Michael Maher