Battery Testing and Charging (Mod. 2 pt5)

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Batteries need _____ for 3 reasons: to make sure it is stable, to see if it requires charging, and to see if it should be replaced. testing
The 4 battery testing methods are: _______, _______, _______, and _______. specific gravity test, high-load test, high-rate discharge test, full-charge hydrometer test
______ is a measure of how much given volume of a substance weighs in comparison to the same volume of water. Specific gravity
A _____ is an instrument used to measure and compare the relative weights of liquids. hydrometer
A _____ consists of a glass tube with a weighted float inside. When liquid is drawn into the tube, the float rises according to the specific gravity of the liquid. The float is marked so the specific gravity can be read. hydrometer
In the ______ test, a sample of electrolyte is taken from each battery cell with a hydrometer. The hydrometer will have markings to show a "good" or "poor" range fir the electrolyte. The readings tell you if the electrolyte has broken down and become too watery. specific-gravity
During an ______ test, a voltmeter is connected to a disconnected battery to test its voltage. If the battery fails to produce any voltage, it is discharged and needs to be either recharged or replaced. open-circuit voltage
A ______ is the instrument used in a light-load test. cell analyzer
The other name for a cell analyzer is ______. cadmium-tip tester
In a ______ test, the battery caps are removed. Next, the tips of the cell analyzer are probed inside the battery to make contact with each of the cell connectors. Each cell is tested individually. light-load
In the ______ test, a variable resistor (rheostat) is connected into the circuit along w/ a voltmeter and ammeter. The rheostat puts a heavy load on the battery, and the two meters measure the battery terminal voltage after 15 seconds of discharging. high-rate discharge
The only tests that can be performed on a _________ battery are the open-circuit voltage test and the high-rate discharge test. sealed / maintenance-free
If a battery passes the specific battery test but later fails in service, use the ______ test to determine the battery problem. full-charge hydrometer
Restoring a battery to its original (maximum) current-producing ability is called _____. recharging
A battery is said to be _____ when it can no longer produce current. discharged
The two methods of recharging batteries are the _____ method and the _____ method. slow-charge, fast-charge
The _____ charging method requires less current than the faswt-charge method. slow-charge
The main difference between the two charging methods is the amount of _____ needed for recharging. time
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