If electricity can’t be stored, then what’s in a battery?
A battery is a source of electrical energy that consists of one or more cells. A cell has two terminals called an anode (-) and a cathode (+) that are made of different chemicals, often metals.
Between the terminals is an electrolyte, which can be liquid, paste, or solid, and conducts ions. The electrolyte may also contain soluble salts or acids.
A separator prevents contact between the anode and the cathode.
When a device is connected to a battery, chemical reactions occur on the terminals that create a flow of electrons and convert chemical energy into electrical energy.
So, it’s not electricity that’s stored in a battery but rather chemical energy that’s converted into electrical energy when needed.