MIL-B-49030A
3.5.7 Age of cells. The minimum age of cells, from the time of their fabrication to the time of their presentation for
acceptance inspection as batteries, shall be 5 days. The maximum age of cells, from the time of their fabrication to
the time of their shipping date shall be 90 days. Batteries shall be submitted for acceptance inspection not more than
30 days prior to the shipping date.
3.5.8 Terminals. The type, dimensions, location, and mounting of terminals shall be as specified herein (see 3.1).
3.5.8.1 Stud and nut. Stud and nut terminals shall be as shown in figure 1 and except when otherwise specified
(see 3.1), shall be made of brass or other approved metal. When specified, the nut shall be made of insulated
material with a brass insert (see 3.1). A bronze or brass plated steel external tooth lockwasher shall be provided for
each terminal.
3.5.8.1.1 Mounting. It shall be possible to screw the nut down by hand to make a firm seat with the shoulder of the
stud, without turning of the stud.
3.5.8.2 Spring clip. Spring clip terminals shall be of the Fahnestock type made of spring brass or other approved
metal, phosphor bronze (see 3.1), and shall be large enough to accommodate a wire having a cross-sectional area of
4,200 circular mils.
3.5.8.2.1 Mounting. Each clip shall be mounted in such a manner that the entire contact surface of the clip shall be
located above the surface adjacent to the clip.
3.5.8.3 Wire leads. Wire-lead terminals shall be hookup wire, type MW-C18(16)U or larger of MIL-W-76.
3.5.8.3.1 Mounting. The external length of each wire lead shall be 6.5 ± .5 inches (165.1 ± 12.7 mm). The wire
leads shall be color coded as follows: Positive-red, negative-black, intermediate as specified (see 3.1). The free end
of each wire shall be bared for a distance of .500 ± .125 inch (12.70 ± 3.18 mm). The strands of each lead, so bared,
shall be twisted together and soldered, and then covered with an adherent insulating waterproof material, or an
equivalent method shall be used to prevent short circuits during storage and handling.
3.5.8.4 Snap-on. Snap-on terminals shall consist of two parts: Stud (non-resilient member) for positive terminal
and socket (resilient member) for negative terminal as shown on figure 2.
3.5.8.4.1 Mounting. Each member shall be securely mounted. Mating member engagements and
disengagements shall be made without dislocating the terminals or distorting the battery beyond the specified limits
during or after any tests performed on the battery (see 3.1). Each member shall be mounted so that the battery
jacket does not interfere with the proper mating of terminals.
3.5.8.4.2 Contact resistance. The contact resistance between the plug gauge and socket when tested in
accordance with 4.7.4.1.1 shall not exceed .005 ohm.
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