MIL-PRF-8565/6B(AS)
4.5.31 Final examination. Before the first sentence.
7.4 Modify the following paragraphs:
3.5.4 Venting. Delete the entire text and insert: "Each battery shall include two vent
holes, located as shown on figure 1 of the specification sheet. Air shall flow freely into and
through any vent hole, across the cells and exit through the other vent hole."
3.5.5 Receptacles. Delete the second sentence and insert: "The battery's electrical
interface to the aircraft shall be the MS27466T15B5S receptacle. It shall be positioned and
electrically connected as shown on figure 1 of the specification sheet.
a. Pin A shall be +28 VDC input for battery heater and optional charging.
b. *Pin B shall be charging diode output.
c. *Pin C shall be battery charge input.
d. Pin D shall be battery positive output.
e. Pin E shall be battery negative.
*Pins B and C of mating connector in aircraft installation may be jumpered if the optional
charging from pin A is used."
3.5.10 Heaters. In 3.5.10.a, delete the text and insert the following: "Heaters shall be
powered by 28.25 VDC in accordance with MIL-STD-704, accessible at connector pin A." In
3.5.10.b, delete the text and insert the following: "Heater current shall be not greater than 2.0
amperes at 28.25 VDC. The rated current of each heater control device shall be compatible with
the heater current." In 3.5.10.h, delete "75° C (167° F)" and insert "60° C (140° F)."
3.6.4 Battery caution marking. In the second sentence, delete "6.3 mm" and insert "3.8
mm."
3.6.5 Marking for batteries with heaters. In the first sentence, delete "the battery
identification marking and battery caution marking, " and insert, "the battery cover and the
surface bearing the battery identification." At the end of the third sentence, insert: "(see figure 2
of the specification sheet).
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