Automotive Batteries Chapter 29 Basic Battery Principles u

Automotive Batteries Chapter 29

Basic Battery Principles u Batteries only store power, they do not create it. u Batteries provide power for starting. u Batteries supply power when demand is greater that alternator output. u Batteries stabilize system

Basic Battery Terms Battery - A device that stores electricity u Battery Cell - Consists of Negative & Positive plates u Battery Cycling - Repeated charging and discharging events u Battery Plates - Are made of lead and lead oxide u Charging - Current flowing into the battery from the charging system u Discharging - Current flowing out of u

Basic Battery Terms u Electrolyte is a mixture of sulfuric acid and water. Anytime water is needed distilled water should be used.

Battery Construction u. A battery cell is made up of positive plates, negative plates, straps, and separators. Each cell supplies 2. 10 volts DC

Battery Construction u The battery case is made of highquality plastic, which holds the elements and electrolyte.

Battery Construction u Distilled water is used in batteries because it dose not contain impurities found in tap water.

Battery Cables u The battery positive cable is normally a large red cable connected to the battery.

Battery Configurations u Batteries come in different voltages for different applications (# of cells Volt 8 Volt 12 Volt x 62. 1 Volts) 3 cells 4 cells Actually 6. 3 volts old cars and tractors Actually 8. 4 volts golf carts and floor machines 6 cells Actually 12. 6 volts modern vehicles

Electrolyte u Battery electrolyte is a mixture of 25% sulfuric acid and distilled water.

Battery Products u An automotive battery produces: u Voltage u Direct Current u Hydrogen gas

CAUTION! u Hydrogen gas is EXPLOSIVE!

Temperature u As battery temperature drops, battery power is reduced

Parasitic Load u. A parasitic load is any circuit current draw present when all electrical devices are shut off

Maintenance Free Battery u. A maintenance free battery does not have removable filler caps, it is sealed.

Modern Vehicles Most modern vehicles use a 12. 6 volt batteries u Hybrid vehicles use 144 -270 volt Porsche Cayenne Toyota Highlander batteries! u

Last Two Questions? u Look back through the power point to find your missing answers!

Want Additional Information? u Visit the web site below Car Battery Myths & Facts

u. THE END