1 AUTOMOTIVE BATTERIES Battery function Battery parts Chemical actions Discharge cycle Charge cycle Battery ratings Battery Maintenance Charging Jumping.
Post on 27-Mar-2015
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1
AUTOMOTIVE BATTERIES
Battery functionBattery partsChemical actionsDischarge cycleCharge cycleBattery ratings
Battery MaintenanceCharging Jumping Dead BatteriesSafetyIncreasing battery life
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Battery Safety
AcidGlassesExplosion
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BATTERY FUNCTIONS
Provide electricity to start the engine***
Provide electrical power to the vehicle when the engine is offHelp the alternator if the electrical load exceeds alternator capacity
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BATTERY CONSTRUCTIONPLATES. Separators, connectors, and Electrolyte
Positive plates PbO2 Lead oxide
Negative plates Pb-lead
SeparatorsElementElectrolyte H2SO4+H2O– Sulfuric acid and water– Wet cell
Battery case (polypropylene)Terminals (+ LARGER & -) Two dissimilar metalsMay be charged after discharge
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Battery Parts
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Basic Battery
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PLATE CONSTRUCTION
Positive plates and negative plates stacked next to each other.Separators do not allow plates to touch.More powerful batteries simply have more plates
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BATTERY DISCHARGE CYCLE
Acid reacts with plate materialElectrolyte increases in water contentPositive and Negative plates form lead sulfateNegative terminal has excess electronsPositive terminal has a lack of electrons
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BATTERY CHARGE CYCLE
Alternator forces electrons back into the batteryLead sulfate breaks up Reforms into acid in the electrolyteAmount of water decreases in electrolyteAmount of acid increases in electrolyte
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Dot– good
Dark Green– recharge
Yellow– replace
Charge Indicators
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BATTERY RATINGS
Cold Cranking Amps– CCA
Reserve Capacity– RC
WattsAmp Hour Rating (old)
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Power VS. Temperature
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BATTERY MAINTENANCE
Remove battery Disconnect (-) first
Clean Battery Case &TopClean Battery TerminalsSecure Battery Hold Down
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Clean Battery Case &Top
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Clean Battery Terminals
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Secure Battery Hold Down
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CHARGING & JUMPING
Proper ConnectionsSlow ChargeTrickle ChargeFast Charge (boost)JumpingSafety
LAST
1st
2nd
3rd
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10 - C
11 - B
12 - C
13 - A
14 - A
15 - C
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