Batteries
Dry cell batteries are a type of battery that can be used up without being charged. There are types such as zinc-carbon battery, alkaline battery and lithium battery, and the main shapes are cylindrical, square and button-shaped. Cylindrical/square batteries are generally in the size of D to AAA, but there are also AAAA size batteries suitable for small devices such as penlights and digitizer pens. The button batteries, which are characterized by their thinness, are used for LED lights, card radios, measuring instruments, etc. There are also special products such as long-lifespan lithium batteries with a heat protection function that are resistant to high and low temperatures and can be stored for a long time. As related items for dry cell batteries, there are adapters that can use batteries of one size as batteries of different sizes, checkers and testers that can check the remaining amount of batteries, and battery cases used for storing and carrying batteries.