MIL-PRF-49471/6A(CR)
Figure 2. Socket (Top View).
METHOD OF EXAMINATION AND TESTS:
Capacity tests:
(1) Storage: Details on storage conditions for all specified capacity tests are described in
basic specification.
(2) Discharge:
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Cells (forced discharge): Two cells shall be discharged at 0.65 amperes at 70+5 F
to 2.0 volts. Each discharged cell shall then be connected in series to nine fresh
cells. Each string shall be discharged at 0.65 amperes at 70+5oF for 3 hours.
Batteries: For all capacity tests that do not end in P, except the LR1, H and HT,
the batteries shall be discharged in the 24 volt mode by connecting pins 2 & 4 and
discharged between pins 1 & 5 at 0.65 ampere constant current to cut-off volts
(zero volts for the I test). For the H and HT capacity tests the batteries shall be
discharged in the 24 volt mode as described above, through 0.65 amperes for five
minutes followed by open-circuit for five minutes. This cycle shall be repeated
until the closed-circuit voltage reaches cut-off volts. For the LR1 test, batteries
shall be discharged at 45 milliamperes to 20.5 volts, then at 1.8 watts to 3 volts.
Forced Discharge: After discharge to zero volts on the I capacity test, the batteries
shall be force discharged in the 24 volt mode as described above at 0.65 amperes
for a minimum of 10 minutes. After discharge to zero volts on the IP capacity
test, batteries shall be discharged with the two 12 volt sections connected in
parallel at 1.3 amperes constant current for a minimum of 10 minutes.
Overload test: Batteries shall be discharged in the 24 volt mode as described
above at 1.3 amperes.
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