Exam 17: Batteries: Theory, Diagnosis, and Service

A ____________________ battery can withstand six deep-cycles and still retain 100 percent of its original reserve capacity.

What is the first step when removing an old battery?

Technician A says overcharging can overheat and damage the battery. Technician B says overcharging causes gassing that can cause the battery to lose water. Who is correct?

Battery corrosion is commonly caused by spilled water and electrolyte condensation from ____________________.

What are parasitic loads?

Technician A says absorbed glass mat [AGM] batteries have spiral wound plates and never require water. Technician B says recombinant batteries use a gel-type electrolyte and convert oxygen and hydrogen back into water. Who is correct?

While conducting a battery drain test, if the ammeter reads _____ or more amperes, there is excessive drain.

Technician A says when a battery is charging, it changes chemical energy into electrical energy. Technician B says when a battery is being discharged, it changes electrical energy into chemical energy. Who is correct?

How many volts are present in a fully charged 12-volt battery?

A(n) ____________________ is used to test for parasitic draw.

The BCI group number is normally located on the outside of the battery and is used to state the physical size [height, width, and depth] of the battery.

Technician A says the reserve capacity rating of a battery is the amount of steady current that a fully charged battery can supply for 20 hours without the voltage dropping below 10.5 volts. Technician B says an ampere-hour rating states how many hours the battery is capable of supplying 25 amperes. Who is correct?

Describe the cold-cranking amps rating.

Technician A fast charges a sulfated battery then reinstalls it in the vehicle. Technician B trickle charges a sulfated battery over 24 hours before reinstalling it. Who is correct?

____________________ chargers provide low charging currents and require a day or more to bring the battery up to full state of charge.

Technician A says the specific gravity of pure water is 10.00 at 80 degrees Fahrenheit (27 degrees Celsius). Technician B says the specific gravity of electrolyte in a fully charged battery is between 1.260 and 1.280 at 80 degrees Fahrenheit (27 degrees Celsius). Who is correct?

____________________ describes the battery's ability to conduct current.

At 0 degrees Fahrenheit, a battery can produce only 40 percent of the electric current that it is capable of producing at 80 degrees Fahrenheit.

Battery charging should be done in a well-ventilated area because the gases produced during recharging are _____.

Consult the manufacturer's ____________________ for procedures and precautions when jump-starting late model vehicles with electronic control systems.