ABYC Marine Electrical Certification Day 2 with Complete Solutions .

What is the max voltage to charge most gell cell batteries? - ANSWER-14.1 volts Range of specific gravity in fully charged 12v battery? - ANSWER-1.260 to 1.285 Fully Charged battery is _____ volts. - ANSWER-12.6 Batteries create ______ gas. - ANSWER-Hydrogen Two twelve volt batteries in parallel will create ________ volts - ANSWER-12.6 (amperage doubles) Two 12V batteries in series creates _______ volts, but amperage remains the same - ANSWER-24V This type of battery is characterized by thicker plates and is meant for moderate loads for long periods. - ANSWER-Deep Cycle This appliance is used to derive 12v from 24v system (or visa versa) and equalize batteries charge and discharge rates. - ANSWER-Battery Equalizer Battery boxes must be _______________ due to release of gasses. - ANSWER-vented overboard Over time switching solenoids tend to wear out creating an open circuit and .... - ANSWER-One of the batteries does not charge and goes dead. A drop in specific gravity of _____ (from the other cells) on a battery test is indicative of a bad cell. - ANSWER-0.50 Battery charger selection should be based on __________ type. - ANSWER-Battery Bulging battery sides and a rotten egg smell are signs of what? - ANSWER-Over charging Best practice to prevent corrosion on battery terminals is what? - ANSWER-Spray a dry film corrosion inhibitor. Wing nuts are allowed on battery terminals for wires ______ AWG and smaller. - ANSWER-8 The battery switch rating shall equal the amps of the connected overcurrent protection or the ________ whichever is less. - ANSWER-Feeder Cable In a flooded cell battery, fluid should be checked. - ANSWER-Frequently Batteries in a state of ______ can freeze and become a potential hazard [go boom]. - ANSWER-Discharge