MIL-PRF-29595A
3.7.1 Color. The battery shall conform to one of the following color styles:
a. The color under natural light of four out of six faces of the battery, except the
mounting points, hold-down hooks, other external hardware, identification marking, and
instructions, shall conform to the color listed in table I.
b. Color only the container cover and marking backgrounds in accordance with those
listed in table I under natural light; the rest of the container shall be white or grey.
c. Color only the container cover and marking backgrounds in accordance with those
listed in table I under natural light; the rest of the container shall be of stainless steel.
3.7.2 Polarity marking. The container body shall be conspicuously and durably marked "+"
in red in the location shown on the applicable specification sheet.
3.7.3 Identification marking. The battery identification marking shall be in white or black
print and shall be clear and legible throughout all tests. Unless otherwise specified in the
applicable specification sheet, the marking shall use a type size of not less than 4.2 mm. The
marking shall contain the required titles and information as shown in figure 1 herein and shall be
placed in accordance with the applicable specification sheet. The lot code shall be constructed in
accordance with 3.7.6. The blank area following the entry Date First Placed in Service shall be
capable of being written on with a felt tip permanent marker. The manufacturer shall fill in the
applicable information at the indicated areas. Abbreviations in accordance with ASME-Y14.38
and acronyms are permitted.
3.7.4 Battery caution marking. The battery caution marking shall contain the required titles
and information as shown on figure 2 herein and shall be placed in accordance with the
applicable specification sheet. The lettering height shall be not less than 6.3 mm. The marking
shall be in black print.
3.7.5 Marking for batteries with heaters. If any exterior surface of the battery container
exceeds 49 C (120 F) when all heater elements are energized and all other battery electrical
circuits are not functioning for 1 hour, the following caution statement shall be inscribed on the
battery identification marking and battery caution marking: CAUTION HOT SURFACE (see
figures 1 and 2). The height of all statement letters shall be equal and not less than 6.2 mm. The
battery container shall also display an electrical schematic for internal heaters. The height of the
letters and numbers shall be equal and not less than 3.8 mm.
3.7.6 Lot code. The month and year that the manufacturer compiled the batteries into a
group for inspection and the lot code of the battery shall be clearly shown on the battery
identification marking. The information shall be coded such that the first two digits indicate the
month of the year, the middle two digits indicate the year (followed by a dash), and the last two
digits indicate the inspection lot (see 6.14.7) number. Months earlier than the tenth shall be
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