BA-5590 Family Battery Eliminators
© Brooke Clarke 2015
Background
Description
Photos
Recovery
Related
Connectors
Links
Description
Photos
Recovery
Related
Connectors
Links
Background
There are a number of modern military radios designed to use a pair of BA-5590 batteries (usually the BB-2590 now - 2016) where the battery box is just a drawn aluminum box. But there are a number of after market add-on battery boxes that contain a battery eliminator functioni by making use of some external power supply, typically world AC, 12 VDC or 24 VDC. An example is the WKW-7 Power Adapter.
Description
The MRC-82A Power Supply & Charger and MRC-93 Battery Eliminator look identical on the outside. The MRC-93 appears to be used and theMRC-82A appears to be new and includes a BB-2590 battery. They both have provision for one internal battery. They both have buttons for Arm and Disarm that turn on and off the internal battery. When there's a charged internal battery and the ARM button is pressed will power the radio from the internal batter if the input power fails.
Photos
Fig 1 MRC-82A Power Supply & Chaarger (Ultralife Corp)
Fig 10 MRC-93 Battery Eliminator (no charger) (Ultralife Corp)
NSN: 6130-01-513-9182
AC In: 95-265 VAC, 47-440 Hz
DC In: 9-36 VDC (note: includes both 12 V and 24 V)
DC Out: 26.5 VDC at 5.5 amps & 26.5 VDC at 7 amps (peak)
AC Input Cable: PCP-35
DC Input Cable: PCP-40
Input Connector on MRC-82A:
Connector to make input Cable:
Optional Cables: PCP-55/65 Auto – DC w/Banana Plugs, PCP-235 NATO Input Cable
Internal battery: MRC-2590 (BB-2590) only
NSN: 6130-01-520-8178
AC In: 95-270 VAC, 47-440 Hz
DC In: 9-36 VDC (note: includes both 12 V and 24 V)
DC Out: 26.5 VDC at 5.5 amps & 26.5 VDC at 7 amps (peak)
AC Input Cable: PCP-35
DC Input Cable: PCP-65
Input Connector on MRC-93: KT07A16-8P
Connector to make input Cable:
Output connector mrc-93: BX07A8-2S
Optional Cables: PCP-55 Auto – DC w/Banana Plugs, PCP-40 DC Input Cord, PCP-235 NATO Input Cable
Internal battery: BA-5590, BB-2590, BB390, BB490 or BB-590
Fig 20 MRC-99
Note battery plug at upper left corner only has pins for battery socket, i.e. no extra contacts
for temperature sensor or special charging enable. OK for BB-490 lead acid battery.
Fig 21 MRC-99 block diagram
Although these parts came from an MRC-99 (that uses a lead acid internal battery) some of the individual components are marked MRC-82A
The lower left block is a world AC in/ DC out power supply
Connector Pin Out
Pin
Function
A
B
C
D
E
F
G
H
Recovery
The UBI-2590 battery that came in theMRC-82A showed no bars on the state of charge LCD, i.e. totally dead. Even after a few days in the MRC-82A, although it showed 3 of 5 bars, it was still dead (a small load completely drained it). So in the hope of getting it to reset tried the Bren-Tronics VMBC BTC-70870-1. But a little research shows that the VMBC does not have the ability to reset a BB-2590 battery so tried the SPC PP-8498/U, which is supposed to be able to reset a battery. But it too failed to bring the UBI-2590 back to life.
Related
BA-5590 Family of batteries
Battery Chargers
WKW-7 Power Adapter (Designed for use with obsolete BB-490 lead acid battery)
5590BA Battery Adapter - batteries not included, pack to be made by customer.
Vehicle Mounted Battery Chargers (VMBC)
ABP-AC/DC/BT-TR1 Transceiver Power Unit
Connectors
Fig 2 LEDs: AC in, DC in, Internal Battery
Fig 5 AC Line Power
8/12/2016 10:30 am
Fig 6 BB-2590 Starting at zero charge Note wide block-plug for BB-2590 battery.
After a few hours the BB-2590 State Of Charge indicator has the lowest level segments blinking. If the plug is removed from the battery they still blink. So it looks like a low battery warning. It may take a day or a few days to fully charge this battery that's been sitting dead for who knows how long (years?).
After a day there are 3 of 5 bars showing.
After a couple of days running 24/7 still at 3 of 5 bars. still not charging. A load of a few amps drained it in less than a couple of minutes.
Input
MRC connector: KT07A16-8P
Cable connector: PT06E-16-8S (SR) (William Perry)
Pin
Function
A
AC Hot
B AC safety ground
C
AC Neutral
D & G DC return E & F
+DC
H
nc
Ohms/uF Table
A
B
C
D
E
F
G
H
A
-
OL/25 nF
0.9M/0.36uF
OL/25nF
OL/25nF
OL/25nF OL/25nF OL/0.3nF
B
-
OL/25nF 0.2/OLuF
charging/840uF
850uF
0.2/OLuF
0.3nF
C
-
OL//25nF OL//25nF O/25nF/25nF OL//25nF OL/0.3nF
D
-
850uF
850uF
OLuF
0.3nF
E
-
0.2
2200uF
0.3nF
F
-
2200uF
0.3nF
G
-
0.3nF
H
-
25nF if a wire else 0.3 nF if no wire?
This table is for a modern power supply that accepts world AC ( 95-265 VAC, 47-440 Hz)
all on the same (A & C) terminals.
Aux Output
MRC connector: BX07A8-2S
Cable connector: PT06E-8-2P (SR) (William Perry)
Pin
Function
A
+DC
B
-DC & chassis gnd
Links
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