Question

What is battery?
please answer my question ​

Answer 1

Answer:

A battery is a device that produces electrons through electrochemical reactions, and contains positive (+) and negative (-) terminals.

Answer 2

Answer

A battery is a device consisting of one or more electrochemical cells with external connections for powering electrical devices such as flashlights, mobile phones, and electric cars. When a battery is supplying electric power, its positive terminal is the cathode and its negative terminal is the anode.