Lab_14__Batteries_

Lab_14__Batteries_ - BSE 2484 LAB 14 (Batteries) STATION #...

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BSE 2484 LAB 14 (Batteries) STATION # 1 (Battery Specifications) The definition of Cold Cranking Amps (CCA) is the amount of power a battery can provide at (0º F). Cold Cranking Amps are a measure of how much power a battery can supply to start an engine when it’s really cold (0º F). The CCA rating is particularly important in cold climates, because lower temperatures demand more power to start a car. The definition of cranking amps is the amount of power a battery can provide at 32º F. (CA and CCA) measure how well the battery can start your car, but the CCA rating indicates how well the battery can start an engine when it’s really cold (0º F). Observe the battery at this station check the label to answer the following questions. What does C.C.A. stand for? Blank # 1 What is the C.C.A. rating of the battery at this station? Blank # 2 Is this a conventional or maintenance free type battery? Blank # 3 It is not always easy to determine if a battery is a conventional or maintenance free type! Conventional batteries often have recessed filler caps which make them appear to be the maintenance free type. Always check the label to be sure! Conventional Battery Maintenance Free Battery Note how these batteries both appear to be the maintenance free type.
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BSE 2484 LAB 14 (Batteries) STATION # 2 (Battery Chargers) In a vehicle or on a piece of farm/industrial equipment the charging system (generator or alternator) provides the current flow that recharges the battery. A battery charger can be used to charge a battery when the battery is not installed or the charging system is not operating. The battery charger at this station requires 120 volt AC current and produces 12 volt DC current. The transformer in the battery charger contains two coils which are not physically connected. The 120 volt AC current running through the first coil produces a magnetic field which changes poles every time the current flow reverses (with each cycle.) This shifting magnetic field induces an AC current to flow on the second coil. The second coil has fewer turns or loops in it than the
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Lab_14__Batteries_ - BSE 2484 LAB 14 (Batteries) STATION #...

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