MIL-PRF-49471/3A(CR)
Capacity Test*
Minimum Capacity Requirements in Hours to
20.00 volts in Series, 10.00 volts in Parallel
I & IP
3.4
L & LP
2.2
H & HP
5.6
HT & HTP
5.4
LT & LTP
2.0
IT & ITP
3.0
LR1
48.0
*NOTE: Sample batteries that are to be assigned to a capacity test (except for the LR1) shall be
equally divided between the designated capacity test and the capacity test ending in P (e.g. I and
IP). The odd battery, if present, is assigned to parallel discharge capacity test. For the capacity
tests that do not have the P's, the battery's legs shall be discharged in series. For the capacity
tests that have the P's, the battery's legs shall be discharged in parallel.
Initial voltage delay: During the I, H, HT, and IT discharge tests of the two (2) 12 volt sections
connected in series under the designated loads, initial voltage below the 20.00 volt minimum
voltage cannot exceed a 5.0 second duration. During L and LT discharge tests initial voltage
below 20.00 volts cannot exceed a 60 second duration. During the IP, HP, HTP, and ITP
discharge tests of the two (2) 12 volt sections connected in parallel under the designated loads,
initial voltage below the 10.00 volt minimum voltage cannot exceed a 5.0 second duration.
During LP and LTP discharge tests initial voltage below 10.00 volts cannot exceed a 60 second
duration.
Connector: The connector configuration and operating temperature range requirements shall be
certified in the First Article Test Report. The connector shall be in accordance with SC-C-
179492 with the following exceptions: (1) Sheet two of SC-C-179492 does not apply. (2)
Mounting screws are optional. (3) Operating temperature range for the connector shall be from a
low of-55oC to a high of 125oC. (4) The connector test described in paragraph 4.7.15 shall be
performed 10 times with SM-D-687888. (5) Each of the metallic sockets in the connector (top
view) shall conform to Figure 2. Each socket shall be cylindrical in shape and may have a single
gap with a maximum opening of 30 degrees. The socket shall accept a number 16 pin.
3
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