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Rechargeable Li-ion battery system
BB 2847
8 V Rechargeable Lithium-ion (Li-ion) battery
The BB 2847 battery is based on High
Energy Li-ion technology. The battery is
housed in a molded plastic case with dual
terminal interface. The battery includes
a built in electronic protection circuit with
LCD hands-free fuel gage.
Benefits
■■ Extended life and durabiity in rugged
portable applications
■■ Wide operating temperature range
■■ Easy integration into military and civil
applications
Key Features
■■ Robust molded plastic case
■■ Built in protection circuitry
■■ 5-segment LCD Fuel Gage
■■ Dual I/O terminals
■■ Wide temperature range
■■ High rate capability
■■ High cycle life/low fade
■■ Non-restricted to Class 9
■■ Battery is compatible with MIL
compliant chargers
Typical Applications
■■ Applications where BA 5847 and
BA 5347 are used
■■ AN/PM-34
■■ AN/PAS-13
■■ AN/PRS-7
Electrical charachteristics
Full charge voltage
8.3 V
Operating voltage
7.2 V
Cut-off voltage
5V
Maximum constant current
7A
Typical capacity at 10 W to 5 V cut-off
7.4 Ah / 53 Wh
Recommended charge
Constant current at C/2 rate(3.7A) with 8.3V limit
End with timer or when current drops below 0.075 A
Temperature range
Operating / storage
-30°C to +60°C / -22°F to +140°F
Charging
0°C to +50°C /+32°F to +130°F
Physical characteristics
Maximum weight
Length
Width
Height
Battery case
Metric
Imperial
375 g 13.2 oz
64.8 mm 2.55 in
38.1mm 1.50 in
95.3 mm 3.75 in
Plastic
References
Reference specifications
Nato Stock Number
MIL-PRF-32052/4 or Saft standard specification
6140-01-493-8092
BB 2847
2.550
Typical discharge curves for C/2 (3.7 A) at various temps
9
-30 degC
1.500
-201 degC
8
25 degC
50 degC
Voltage
7
6
5
3.750
4
0
1
2
3
4
5
6
7
8
Discharge Capacity(Ah)
Dimensions (inches)
9
8
Built-in protection circuit
7
Voltage
■■ Against over current/short circuit
■■ Against over charge/ over discharge
■■ Against over heating
■■ Against charging outside the
recommended temperature range
Typical high rate discharge curve at 7 A
6
5
Built-in fuel gauge
■■ 5 segment LCD state-of-charge
indicator
4
0
Rugged molded plastic case
8.0
Storage
Handling
■■ Do not disassemble
■■ Do not remove the protection circuit
■■ Do not incinerate
Amp hours
■■ Store in dry area not >30°C
■■ For long storage maintain battery at
15 - 50% state of charge
1
2
3
4
5
6
Discharge Capacity (Ah)
7
8
Cycle performance 10W discharge to 5 volts
80
7.5
75
7.0
70
6.5
65
6.0
60
5.5
55
5.0
50
4.5
Ah
4.0
45
Wh
40
3.5
35
3.0
30
2.5
25
2.0
20
1.5
15
1.0
10
0.5
5
0.0
0
25
50
75
100
125
150
175
200
225
250
Cycle Count
Saft
12, rue Sadi Carnot
93170 Bagnolet France
Tel.: +33 (0)1 49 93 19 18
Fax: +33 (0)1 49 93 19 69
www.saftbatteries.com
Saft America, Inc.
313 Crescent St.
Valdese, NC 28690 - USA
Tel.: +1 (828) 874 4111
Fax: +1 (828) 874 3981
www.saftbatteries.com
Doc N° 32044-2-0713
Edition: July 2013
Information in this document is subject to change
without notice and becomes contractual only after
written confirmation by Saft.
Published by the Communications Department
Photo credit: Saft
0
Watt hours
3
Dual terminal system
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