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Primary Li-MnO2 battery
MR 509 battery
9 V lithium manganese dioxide (Li-MnO2) battery
Saft’s MR 509 battery has a 3S1P
configuration of C size Li-MnO2 cells type
M 52 HR with spiral electrode design. It
is used as power source for the MR 509
emergency radio unit in military and civil
aircraft and features a proven shelf-life
of 10+ years.
Benefits
 High drain and pulse capability
 High voltage response, stable even
after long dormant periods
 No voltage delay
 Low self-discharge compatible with



long shelf-life of 10+ years (less than
1% after 1 year of storage at + 20 °C)
High energy density, lightweight
Wide operating temperature range
Superior resistance to corrosion
Key features
 Three M 52 HR cells in 3S1P
configuration
 Safe, hermetic and non-pressurized



cell construction with glass-to-metal
seal, safety vent and stainless steel
container
Short-circuit proof due to integrated
polyswitch
Restricted for transport (class 9)
Manufactured in Germany
Designed to meet all major quality,
safety and environment standards
 Safety: UL 1642 (File MH 61234), IEC
60086-4
 Military: VG 96915-180 (German
military standard)
 Aviation: Certification of Approval as



manufacturer of aircraft systems for
the German Army (No. BAAINBwC0303 – F01/14/01)
Transport: UN 3090 and UN 3091
Quality: ISO 9001, Saft World Class
continuous program
Environment: ISO 14001, RoHS and
REACH compliant
Typical applications
 Emergency radio unit for aircraft
Saft
12, rue Sadi Carnot
93170 Bagnolet-France
Tel.: +33 1 49 93 19 18
www.saftbatteries.com
Electrical characteristics
(Typical values related to batteries stored up to one year at + 30 °C max)
Typical capacity (at 400 mA, +21 °C, 6.0 V cut-off) (1)
Open circuit voltage
Nominal voltage (under 1 mA at +20 °C)
Nominal energy (at 200 mA, +20 °C, 6.0 V cut-off)
Maximum continuous discharge current (2)
4.5 Ah
9.9 V
9.0 V
42 Wh
1.5 A
Operating conditions
Operating temperature range (3)
-40 °C / +72 °C (-40 °F / +161 °F)
Storage temperatures
Recommended
+35 °C (+95 °F) max.
Allowable (3)
-55 °C / +72 °C (-67 °F / +161 °F)
Physical characteristics
Length
Width
Height (max)
Battery case
Terminals
Battery weight
Li metal content
75 mm / 2.95 in
37 mm / 1.46 in
54 mm / 2.13 in
Plastic hard case
Connecting socket
180 g
4.7 g
References
Saft Part No.
NSN (NATO Stock No.)
4439270104
6135-12-353-2558
(1)
(2)
(3)
(4)
Can vary depending on current drain, temperature and cut-off voltage.
Current limit of the polyswitch at +85 °C. Higher currents are possible at lower temperatures and for
pulses. Consult Saft.
Operating temperatures up to +85°C under certain conditions. Consult Saft.
Long-time storage at high temperature may affect performance. Consult Saft.
Friemann & Wolf
Batterietechnik GmbH
Industriestr. 22,
63654 Büdingen, Germany
Tel.: +49 (0) 6042 954 150
www.friemann-wolf.de
Doc N° 31136-2-0316
Edition: March 2016
Information in this document is subject to change without
notice and becomes contractual only after written
confirmation by Saft.
Published by the Communication Department
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