MIL-B-49030A
4.7.9.1.2 Capacity test HT. Discharge at 70 °F (21.1 °C) after one week (7 days) storage at 160 °F (71.1 °C).
4.7.9.1.3 Capacity test LT. Discharge at 0 °F (-17.78 °C) after storage at 0 °F (-17.78 °C) for a minimum of sixteen
(16) hours.
4.7.9.1.4 Capacity test T. Discharge at 70 °F (21.1 °C) after 13 weeks storage at 113 °F (45 °CF)
4.7.9.1.5 Capacity test D. Discharge at 70 °F (21.1 °C) after (52 weeks) storage at 70 °F (21.1 °C).
4.7.9.2 Ambient storage and discharge conditions. The ambient conditions specified in table X shall prevail during
storage and discharge periods. Normal conditions shall be maintained insofar as possible. Deviations from normal
conditions are permitted, provided that: 1) The extreme conditions specified in table IX do not exist for more than
five percent (cumulative) of the specified storage or discharge periods, and 2) that at no time are the extreme
conditions exceeded.
4.7.9.3 Storage. Sample batteries (packaged per contract) shall be stored at applicable storage conditions for the
specified period (see 3.1). The storage period shall be considered to have started from the date the batteries are
actually placed in storage. At the conclusion of the storage period, the outside of the battery container shall be
examined for corrosion (see 3.5.10).
4.7.9.4 Stabilization preceding discharge. Following storage and conditioning, when applicable, the batteries shall
be further stored for 48 hours at ambient discharge conditions specified in table X. Prior to initiation of discharge, LT
samples shall be stored at 0 °F (-17.78 °C) for a minimum of sixteen (16) hours.
4.7.9.5 Discharge. Following stabilization, the batteries shall be discharged at the ambient discharge conditions
specified in table X. The discharge shall be terminated when any one of the following conditions occur:
a.
The battery voltage or the voltage of any one unit falls below the specified test-end voltage. (For batteries
requiring discharge alternately through two resistances, the voltage shall be read during the final minute of
the heavier-load period.)
The battery dimensions exceed the maximum specified (see 3.1).
b.
c.
Electrolyte leakage becomes apparent on the exterior surface of the battery.
4.7.10 Electrolyte leakage. Sample batteries shall be discharged as specified in 3.1 and then stored for 13 days.
Fifty percent of the batteries shall be stored in an inverted position. The storage and discharge shall be performed at
inspection conditions specified in 4.3. During the 15-day storage period, each battery shall be examined daily for
evidence of electrolyte leakage on the external surfaces of the jacket (see 3.4).
4.7.11 Electrical insulation continuity. Only metal jacketed single cell batteries shall be subjected to electrical
insulation continuity. The electrical insulation continuity shall be measured by the application of appropriate
instrumentation (Ohm-meter) between each terminal and the outer metal jacket of the battery. One contact of the
circuit shall be applied to one of the battery terminals while the other contact of the circuit shall be applied to the
metal jacket. This contact shall be applied in such a manner as to assure intimate contact with the metallic portion of
the jacket. This procedure shall be repeated with the other battery terminal.
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