TM 11-6140-203-14-4&P
any cell reaches 0.5 volts or lower, place a shorting
discharged as shown in figure 5-5. (Be sure that the
device (metal spring strip) across the positive and
knife switch is in the open position.)
(b) Close and open the knife switch as
negative terminals of that cell. Continue this process
until the overall battery voltage drops below 10 volts.
necessary while adjusting the 0 to 7.5-ohm variable
Shutoff the RF80GT and disconnect the battery. Then
resistor for a resistance value high enough to permit the
connect individual shorting strips across the remaining
discharge current to flow at approximately the 3-hour
battery cells. Allow cells to remain shorted out for at
rate of the battery. Monitor the terminal voltage of each
least 3 hours; however, best results will be obtained
cell during discharge using the multimeter. When the
with an overnight stand.
terminal voltage of a cell reaches 0 volts, place a
(4) Deep discharge using load resistor. If a
shorting device (spring metal strip) across the positive
discharge rack or charger/analyzer is not available
and negative terminals of that cell DO NOT USE ANY
proceed as described in (a) and (b) below.
OTHER
METHOD TO DETERMINE WHEN A
SHORTING DEVICE SHOULD BE PLACED ACROSS
(a) the 0to 7.5-ohm, 1, 000-watt
THE CELL TERMINALS.
variable resistor (item 8, appx E), two multimeters, knife
switch (item 7), and nickel-cadmium battery to be
5-11
