Batteries used in typical household appliances and gadgets, including flashlights, toys, remote controls, power tools, and more, are referred to as household batteries. They come in a variety of shapes and sizes, including AA, AAA, C, D, and other specialist sizes, as well as rechargeable and nonrefillable varieties. Alkaline, lithium, and nickel-metal hydride (NiMH) batteries are the three most popular types of household batteries.