Dry cells are a type of chemical cells. Dry cells are commonly used today in the form of batteries. Dry cells are used in many electrical appliances. Most dry cells are not truly dry; they still contain a liquid electrolyte, but it is immobilized in a paste or gel. Several truly dry, or solid-state, batteries have been developed, but none are commercially available yet.
Types of dry cells
Primary cells
Zinc-carbon cells, also known as Leclanche cells
Alkaline cells
Lithium cells
Mercury cells
Silver oxide cell
Secondary cells
Nickel-cadmium cell
Lithium-ion cell
Nickel metal-hydride cell
Sealed lead acid battery
Primary cells are not rechargeable. They have to be thrown away after their chemicals are used.
Secondary cells are rechargeable. They can be used again.