MIL-B-49030A
4.7.5 Strap handle strength. The sample battery, or a strap handle attached to a metal plate (mockup) shall be
supported by the strap handle. The battery or the mockup shall be conditioned for 6 hours at a temperature of 160 °F
± 5 °F (71.1 °C ±2.8 °C) and ambient relative humidity. Immediately following the conditioning, a weight shall be
added gradually in such a manner that the total weight (including the weight of the battery, if used) applied to the
strap handle and its anchorages shall be at least 80 pounds; and it shall be maintained at inspection conditions
specified in 4.3 for at least 1 minute. This test shall be repeated again after conditioning the battery or the mockup at
a temperature of -40 °F ±5 °F (-40 °C ±2.8 °C) for 6 hours. Condition of the strap handle as a whole and of the strap
at its anchorages shall be observed.
4.7.6 Jackets.
4.7.6.1 Metallic jackets. Metallic jacketed batteries weighing five pounds or more shall be loaded by applying
weights totaling 100 pounds evenly distributed over the top of the battery and shall remain so loaded at least one
minute. The condition of the jacket shall be observed (see 3.5.10.1.2).
4.7.7 Dimensions and weight. Batteries shall be examined by gauging or measuring and by weighing to determine
conformance.
4.7.7.1 Dimensions. All dimensions shall include any coating which may be used, and shall remain within the
specified tolerances throughout the required tests. When box gauges are used, batteries loaded with the following
weights shall pass freely through the applicable gauge openings:
a.
Batteries weighing less than 5 pounds: Loading weight of 5 pounds.
b.
Batteries weighing 5 pounds or more: Loading weight equal to the weight of the battery.
The inside dimensions of the box gauge shall be the specified maximum outside dimensions of the battery.
4.7.8 Battery voltage.
4.7.8.1 Open-circuit voltage. A direct current voltmeter of proper range and sensitivity shall be used to measure
the open-circuit voltage.
4.7.8.2 Closed-circuit voltage. A direct current voltmeter of proper range and sensitivity shall be used to measure
the closed circuit voltage utilizing resistance specified (see 3.1).
4.7.9 Capacity.
4.7.9.1 Capacity tests. Sample batteries selected for capacity tests specified in the individual battery specification
sheet (see 3.1) shall be stored and discharged, as applicable, in accordance with 4.7.9.1.1 through 4.7.9.5.
4.7.9.1.1 Capacity test I. Discharge at 70 °F (21.1 °C) without previous storage specified in 4.7.9.3.
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