Batterys
How can a battery hydrogen gas be dangerous?
Can collect at top of battery 10 exposed to a flame are spark
The battery shows the general charge condition of the battery
Charge indicator
During electrical energy is converted into chemical energy
Charging
When the battery changes chemical energy into electrical energy
Discharging
How can you tell if a battery is maintenance free?
Does not use removable filler cap
What is an automotive battery?
Electrochemical device that produces and stores electricity
Is a mixture of sulfonic acid and distill water
Electrolyte
What is the body ground wire for?
Ensure that the vehicle body is grounded
The first function of a battery
starting motor ignition, electric fuel injection and other electrical devices
Made up of positive plates, negative plates, straps and separators
Battery element
A 12 volt battery has six cells that produce an the open circuit of
12.6v
Forth function of a battery
Act as a capacitor that smooths current flow through electrical system
Connected to simple battery cell current flow using device
Load
What are battery plates?
Made of a grid coated with porous lead
What does a simple battery cell consist of
Negative plate, positive plate, container and electrolyte
As the battery temperature drops the battery power is?
Reduced?
Fit between the battery plates to keep them from touching each other and shorting
Separators
The fifth function of a battery
Store energy for extended periods
The second function of a battery
Supply all electrical power for a vehicle whenever engine not running
What happens to voltage and current if you connect two 12 volt batteries in parallel?
They're output voltage stays the same but their current output increases
What is the reserve compacity rating?
Time needed to lower battery terminal voltage below 10.2 volts at a discharge rate of 25 amps
What is a battery heat shield?
To keep excess engine heat from damaging the battery
Batteries can have either side terminals or top posts? True or False
True
what is a parasitic load on a battery?
any normal accessory circuit current draw present when all electrical devices are shutt off
Third function of a battery
charging the system when current demands exceed in the output limit of the charging system
What does the battery cold cranking reading indicate?
how much current the battery can deliver for 30 seconds at 0 Fahrenheit while maintaining terminal voltage of a 7.2 volt or 1.2 volts Per cell
