MIL-PRF-8565K
indicated length of time at the listed temperature after being tested in accordance with 4.5.7.
Battery capacity shall vary not greater than ± 5 percent within a given inspection lot. The
tolerance of the discharge current shall be ± 1 percent of the specified value.
3.8.7 Constant voltage discharge. The battery shall produce not less than the current
specified in the applicable specification sheet after being tested in accordance with 4.5.8. The
battery shall meet requirement (4) of table III. During group A conformance inspection, the
battery shall meet the current requirements specified in the applicable specification sheet for the 0
to 30-second time parameters only; in addition, the 60-second average current and total ampere-
hour capacity requirements are not applicable. The battery shall also meet the requirements of 3.7
during and after charge and discharge.
3.8.8 Strength of receptacle. The receptacle and receptacle mounting shall withstand an
axial pullout force of 1112 ± 111 newtons (250 ± 25 pounds) and a torsional force of
8.1 ± 0.7 newton-meters (6 ± 0.5 foot-pounds) after being tested in accordance with 4.5.9. The
battery shall also meet the requirements of 3.7.
3.8.9 Cycling. Batteries shall successfully complete not less than 100 cycles (see 6.15.5)
after being tested in accordance with 4.5.10. The inability of the battery to meet requirement (1)
of table III for three consecutive discharges shall constitute a failure.
3.8.10 Functional discharge. The battery potential shall be not less than 14.0 volts at not
less than 3 minutes into the discharge after being tested in accordance with 4.5.14, 4.5.15, 4.5.16,
4.5.18, 4.5.19, 4.5.20, 4.5.21, 4.5.23, and 4.5.25.
3.8.11 Temperature rise and float. The battery shall perform as follows after being tested in
accordance with 4.5.17. If the charging current rises, its increase (in amperes) compared to the
current's minimum value shall be not greater than 10 percent of the battery's rated capacity (for
example, 1.5 amperes for a 15-ampere-hour battery) at any time during charge. The battery shall
meet requirement (1) of table III and the requirements of 3.7.
3.8.12 Battery gas emission. The percent of hydrogen concentration shall be not greater
than 3.5 percent at any time during the test of 4.5.18. The battery shall also meet the
requirements of 3.8.10 (see 3.5.7, 3.5.8, and 3.7.e).
3.8.13 Storage.
3.8.13.1 Ground storage. The battery shall be capable of storage in uncontrolled
temperature conditions from -40°C to +50°C (-40°F to +122°F) for not less than 30 days, after
which it shall deliver not less than 50 percent of rated capacity after being tested in accordance
with 4.5.22.
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