When load-testing a lead-acid battery, what is recommended load to be drawn by the carbon-pile? 1/2 of the CCA rating for 15 seconds Tech A says that used batteries can be disposed of in the garbage providing the electrolyte is removed first. Tech B says the battery vendors are usually required by law to receive as many batteries for recycling as they sell. Who is right? Tech B only Tech A says that excessive vibration can shorten the life of a lead-acid battery by shaking the active material from the plates. Tech B says that modern truck batteries are designed to sustain high levels of vibration and this seldom causes premature failures. Who is right? Tech A only Tech A says that a defective voltage regulator can result in overcharging batteries. Tech B says that when batteries are overcharged, they can boil off electrolyte. Who is correct? Both When replacing a battery, what is the recommended sequence to use in disconnecting and re-connecting the cables? Disconnect the ground cable first and reconnect is last When testing specific gravity of a lead-acid battery, which of the following produces a reading that is not influenced by the actual temp of the electrolyte? Refractometer Which of the following conditions can shorten the life of a heavy-duty, lead acid battery? (over-charging, under-charging, deep-cycling) All of the above What electrolyte specific gravity measured at 80degrees Fahrenheit should be indicate tat a lead-acid battery is fully charged? 1.265 When there are multiple 12V batteries in a bank, how must they be connected in a truck with chassis voltage of 12V in Parallel When using a Midtronics type capacitance tester to evaluate battery performance, which of the following data MUST be input? CCA Which of the following would result when two batteries are connected in series? Voltage Doubles What solution is recommended to neutralize and clean corrosion from battery posts and terminals? Baking Soda and Water Which would be a consequence of reversing the polarity of a battery bank on truck electrical system? (Battery explosion, damage to truck electronics, damage to alternator) All of the above would result when two batteries are connected in parallel? Current Capacity Doubles When load testing a fully charged, lead-acid battery at 80deg F at one half the rated CCA for 15 sec, what is the lowest acceptable voltage during the test? 9.6V What electrolyte is used in a vehicle lead-acid battery? Distilled Water What is a common result of a deep-cycling a lead acid battery? Plate Buckling The term used to describe the weight of a volume of a liquid versus the weight of an equal volume of pure water is: Liquid mass Describes the amount of time a vehicle can be operated with its headlights on before battery voltage drops to 10.5V Reserve Capacity What termp is the cold cranking amp capability of a lead-acid based on? 0Deg F What is main advantage of modern battery conductance test instruments? Reduced the incidence of mis-diagnosed batteries Tech A says that adding pure sulfuric acid to a discharged lead-acid battery is a recommended means of reducing the time required to charge it. Tech B says that it is acceptable to add tap water to top-up the electrolyte in a lead-acid battery. Who is right? Neither Tech A says that the conductance testing is considered to be an accurate method of assessing battery service life. Tech B says that a disadvantage of conductance testing is that the battery electrolyte covers must be removed. Who is right? A only Tech A says that battery cells that require frequent topping up in an indication of over-charging. Tech B says that voltage regulators should not be set above 14.1V on many current trucks. Who is correct? Both
