1、 INCH - POUND MIL - PRF - 49471/6A(CR) 30 November 2000 Superseding MIL - PRF - 49471/6(ER) 2 June 1995 PERFORMANCE SPECIFICATION SHEET BATTERY, NON - RECHARGEABLE, HIGH PERFORMANCE, BA - X557/U This specifica tion is approved for use within the Communications Electronics Command, Department of the
2、Army, and is available for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product herein shall consist of this specification MIL - PRF -49471(CR). Figure 1. Battery dimensions and terminal markings . AMSC N/A 1 of 5 FSC 6135 DISTRIBUTION STATEMEN
3、T A . Approved for public releas e; distribution is unlimited. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49471/6A(CR) 2 NOTES : 1. All dimensions are in inches. 2. T
4、olerances, unless otherwise specified, are + .030 inch. 3. The battery terminal shall consist of a miniature circular battery connector, Dwg SC - C -179492, except as noted her ein. 4. Connector socket body configuration shall accept two (2) each 0.156 inch minimum diameter guideposts as shown. Dept
5、h of cavity shall be 0.657 inch minimum. 5. The socket (connector) shall be supported and mounted so that the top surface of the socket shall not protrude above the adjacent outside surface of the jacket and shall not be more than 0.0625 inch below adjacent outside of the jacket when used initially,
6、 during and after subsequent insertions of the mating plug. This shall be certif ied in the First Article Test Report. REQUIREMENTS : Dimensions and configuration: See Figure 1. Maximum voltage: 33.0 volts in 24 volt mode 16.5 volts in 12 volt mode Cut - off voltage for capacity: 20.00 volts in 24 v
7、olt mode 10.00 volts in 12 volt mo de Terminals: Six (6) hole socket type with no obstruction of any holes (see Fig. 1). Weight (maximum): 1.65 pounds (748 grams). Battery short circuit test: Applicable. Charge protection: Applicable. High temperature protection: Applicable. Comp lete discharge devi
8、ce: Applicable. State of Charge Indicator: Not applicable. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49471/6A(CR) 3 Capacity tests: When the battery is tested in acc
9、ordance with the methods of examination and tests of this specification, the minimum capacity test requirements shall be as specified below: Capacity Test * Minimum Capacity Requirements in Hours to 20.00 volts in Series 10.00 Volts in Parallel I & IP 3.0 L & LP 1.5 H & HP 5.5 HT & H 5.3 LT & LTP 1.
10、3 IT & ITP 2.8 LR1 45.0 * NOTE: Sample batteries that a re to be assigned to a capacity test (except the LR1 test) 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 series discharge capacity te
11、st. For th e capacity tests that do not have the Ps, the batterys legs shall be discharged in series. For the capacity tests that have the Ps, the batterys 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 connect
12、ed 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 v
13、olt 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 LT P discharge tests initial voltage below 10.00 volts cannot exceed a 60 second duration. Connector: The connector configuration and
14、 operating temperature range requirements shall be certified in the First Article Test Report. The connector shall be in ac cordance 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 f
15、or the connector shall be from a low of - 55 o C to a high of 125 o C. (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 sh
16、ape and may have a single gap with a maximum op ening of 30 degrees. The socket shall accept a number 16 pin. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49471/6A(CR)
17、4 Figure 2. Socket (Top View) . METHOD OF EXAMINATION AND TESTS : Capacity tests: (1) Storage: Details on storage conditions for all specified capacity tests are described in basi c specification. (2) Discharge: Cells (forced discharge): Two cells shall be discharged at 0.65 amperes at 70 + 5 o F to
18、 2.0 volts. Each discharged cell shall then be connected in series to nine fresh cells. Each string shall be discharged at 0.65 amp eres at 70 + 5 o F for 3 hours. Batteries: For all capacity tests that do not end in P, except the LR1, H and HT, the batteries shall be discharged in the 24 volt mode
19、by connecting pins 2 & 4 and discharged between pins 1 & 5 at 0.65 ampere constant current to cut - off volts (zero volts for the I test). For the H and HT capacity tests the batteries shall be discharged in the 24 volt mode as described above, through 0.65 amperes for five minutes followed by open
20、- circuit for five minutes. This cycle shall be repeated until the closed - circuit voltage reaches cut - off volts. For the LR1 test, batteries shall be discharged at 45 milliamperes to 20.5 volts, then at 1.8 watts to 3 volts. Forced Discharge: After discharge to zero volts on the I capacity test,
21、 the b atteries shall be force discharged in the 24 volt mode as described above at 0.65 amperes for a minimum of 10 minutes. After discharge to zero volts on the IP capacity test, batteries shall be discharged with the two 12 volt sections connected in parallel at 1.3 amperes constant current for a
22、 minimum of 10 minutes. Overload test: Batteries shall be discharged in the 24 volt mode as described above at 1.3 amperes. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF
23、-49471/6A(CR) 5 Abuse test predischarge: Batteries shall be discharged in the 24 volt mode as described ab ove at 0.65 amperes for 1.5 hours. Abuse test, pulse discharge: Batteries shall be discharged in the 24 volt mode as described above at 0.88 amperes for 1 minute followed by 0.64 amperes for 4
24、minutes, cycled continuously to cut - off voltage. For all cap acity tests that end in P, except the HP and HTP, the batteries shall be discharged with the two 12 volt sections connected in parallel at 1.30 amperes constant current to cut - off volts (zero volts for the IP test). For the HP and HTP
25、capacity tests the b atteries shall be discharged with the two 12 volt sections in parallel at 1.30 amperes constant current for five minutes followed by open - circuit for five minutes. This cycle shall be repeated until the closed - circuit voltage reaches cut - off volts. Clo sed - circuit voltag
26、e (batteries and cell series strings): Load resistance of 15 ohms shall be used between socket holes 1 & 4 and 2 & 5. Voltage shall be 10.0 volts or greater within ten seconds. Cell closed circuit voltage: Load resistance of 3 ohms sha ll be used. Voltage shall be above 2.0 volts in 5 seconds. Margi
27、nal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes. Custodian: Preparing Activity: Army CR Army - CR (Project 6135 - 0417 - 06) Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
