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• The alternator subsequently supplies all the car’s electrical needs, plus an extra margin to replace the energy the starter motor withdrew from the battery.
• the boat’s electrical system runs directly off the battery.
• any charged lead-acid cell will produce a voltage of around 2.1 volts. This is simply the voltage that results from placing lead dioxide and lead in sulfuric acid. (Cells using other metals and electrolytes have different voltages;
• The traditional battery has a liquid electrolyte and is known as a wet, or flooded-electrolyte, battery.
• During periods of charging, particularly the final stages of charging, some of the charging current breaks down the water in the electrolyte into its component parts of hydrogen and oxygen, which then bubble out of the electrolyte—the battery is said to boil or gas—lowering the level of the electrolyte. This water must periodically be replaced by t...