AUT 242-Chapter 13

10. A charge indicator (eye) operates by showing green or red when the battery is discharged. This charge indicator detects .

Specific gravity

Valve regulated lead-acid (VRLA)-

a type of lead-acid rechargeable battery

8. What battery rating is tested at 32 F (0 C)?

Cranking amperes (CA)

4. What makes a battery "low maintenance" or "maintenance free"?

. Material is used to constructed of different metals

2. A fully charged 12 volt battery should indicate .

12.6 volts or higher A specific gravity of 1.265 or higher

2. What are the battery-rating methods?

Batteries are rated according to CCA and reserve capacity

3. Why can a battery explode if it is exposed to an open flame or spark?

Because all batteries give off hydrogen and oxygen when being charged

1. Why can discharged batteries freeze?

Because the electrolyte is mostly water

6. Which battery rating is tested at 0 F (-18 C)?

Cold-cranking amperes (CCA)

9. What gases are released from a battery when it is being charged?

Hydrogen and oxygen

5. The positive battery plate is_____________.

Lead dioxide

1. When a battery becomes completely discharged, both positive and negative plates become and the electrolyte become .

PbSO4 H2O

7. Which battery rating is expressed in minutes?

Reserve capacity

3. Deep cycling means .

The battery is fully discharged and then recharged

Reserve capacity-

a rating for batteries that is the number of minutes for which the battery can produce 25 amperes and still have a battery voltage of 1.75 volts per cell (10.5 volts for a 12 volt battery)

Sealed lead-acid (SLA)-

acid in batteries that use a low-pressure venting system that releases excess gas and automatically reseals if a buildup of gas is created due to overcharging

Cells-

are constructed of positive and negative plates with insulating separators between each plate

Sediment chamber-

are places which ribs that support the lead-alloy plates and provide a space for the sediment to settle

Deep cycling-

is almost fully discharging a battery and then completely recharging it

Ampere hour-

is an older battery rating system that measures how many amperes of current the battery can produce over a period of time

Marine cranking amperes (MCA)-

is similar to cranking amperes and is tested at 32○ F

Cold-cranking amperes (CCA)-

is the cold cranking performance rating for a battery is the number of amperes that can be supplied to a battery at 0○F

Specific gravity-

is the ratio of the weight of a given volume of a liquid to the weight of an equal volume of water

Electrolyte-

is the term used to describe the acid solution in a battery

Porous lead-

material used to paste negative plates to the grid

Recombinant battery-

means that the oxygen gas generated at the positive plate travels through the dense electrolyte to the negative plate

Sponge lead-

porous lead that is gray in color

Cranking amperes (CA)-

refers to the number of amperes that can be supplied by a battery at 32○ F

Battery council international (BCI)-

standardized system by which batteries sizes group by

Partitions-

the separation of each cell in a battery made up of the same material that is used for the outside case of the battery

Starting, Lighting and ignition (SLI)-

used to describe a type of battery and describes the use of a typical automotive battery

Absorbed glass mat (AGM)-

used totally to make the battery leakproof and spillproof