BATTERIES WHAT IS A BATTERY- A battery is a combination of two or more cells in series, parallel or series-parallel combinations. 1. Primary Batteries (Non-rechargeable) Also commonly known as dry batteries Used for low to moderate power drain applications. Shape is usually flat, button or cylindrical. Voltage is produced due to chemical reaction where one of the electrodes gets consumed; usually the negative electrode. They are normally not rechargeable but some (usually the alkaline type) can be recharged. (a) Alkaline Type Battery Widely used in household devices (e.g., AA, AAA batter). Known for long shelf life and steady energy output. (b)Lithium Type Battery : Used in small electronics like watches, calculators, and medical devices. They provide high energy density and last longer. (c)Zinc-Carbon Type Battery : Inexpensive and commonly used in low-drain devices like remote controls. (d)Silver-Oxide Type Battery: Often used in small devices like hearing aids ...