MIL-DTL-82909A (OS)
collected at two points every 12 hours and the specific gravity, concentration, and PH of the solution
measured.
b. After completing the 168 hours of testing, the salt deposits (if any) shall be removed, if necessary,
for aiding in a visual inspection. To remove the salt deposits, a gentle washing technique shall be used with
water not warmer than 38°C (100°F).
c. After completing the salt fog test, the battery packs shall be stored for 48 hours at 70°F. At the end
of the 48 hours, a complete visual inspection shall be conducted. Any damage or degradation shall be
noted.
d. Failure of any battery pack to comply with the requirements of 3.6.4 shall be cause for rejection of
the lot and/or first article.
4.3.11 Six-foot drop test. The battery packs, with protective plugs removed from the inlet ports and
electrical connectors, shall be submitted to the drop test outlined in MIL-C-83125 with the following
requirements:
a. The battery packs shall be dropped from a height of 6 feet onto a 2-inch-thick steel plate supported
by reinforced concrete. One new battery pack shall be used for each drop orientations. All impact
orientations are given in figure 1.
b. After each battery pack is dropped, a visual inspection shall occur to document any minor/major
external damage that occurred and to verify non-initiation of either battery.
c. If it is determined that the damage sustained by any one battery pack cause it to be unsafe for
handling, all testing shall be stopped.
d. Failure of any battery pack to comply with the requirements of 3.6.5 shall be cause for rejection of
the lot and/or first article.
4.3.12 Forty-foot drop test. The battery packs, with protective plugs removed from the inlet ports and
electrical connectors and without shipping containers, shall be submitted to the drop test outlined in MIL-
STD-331, test 103 with the following requirements:
a. The battery packs shall be dropped from a height of 40 feet onto a 2-inch-thick steel plate
supported by reinforced concrete. One new battery pack shall be used for each drop orientations. All
impact orientations are given in figure 1.
b. After each battery pack is dropped, a visual inspection shall occur to document any external
damage that occurred and to verify non-initiation of either battery.
c. If it is determined that the damage sustained by any one battery pack cause it to be unsafe for
handling (ruptured case), all testing shall be stopped.
d. At the conclusion of the forty-foot drop test, each battery pack shall again be visually inspected for
external damage. After being inspected, each battery pack shall then be disposed of in a safe and
appropriate manner.
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