Explanatory notes
… electrolyte (e.g., potassium or sodium hydroxide, ammonium chloride or a mixture of lithium chloride, ammonium … of lithium and the cathode (depolarising electrode) is, for example, of manganese dioxide (mixed with carbon powder), of … a number of purposes (for bells, telephones, hearing aids, cameras, watches, calculators, heart pacemakers, radios, …