A battery is a device capable of storing electrical energy in the form of chemical energy and converting that energy into electricity. (a) Define the main components of a battery and illustrate how they can be arranged. (b) Explain the classification of batteries into primary and secondary batteries. (c) Describe the electrochemical reactions occurring at the anode and cathode in a Li-ion battery during the charge and discharge processes. (d) Discuss the properties of Li-ion batteries compared to standard batteries.