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M 20 EX SV
Primary Li-MnO2 cell
3 V lithium manganese dioxide D-size spiral cell certified for ATEX applications
Saft’s M 20 EX SV cell is ideally suited for
applications requiring high energy and
long operating life, with stable voltage
under high discharge in - 40°C / + 72°C
environment. The cell is certified according
to ATEX for use in potentially explosive
atmospheres.
Benefits
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High drain / high pulse capability
High voltage response, stable during
most of the lifetime of the application
even after long dormant periods
High capacity and very high pulse capability
Low self-discharge compatible with
long operating life (less than 1% after
1 year of storage at + 20°C)
ATEX certified
Superior resistance to corrosion
Low magnetic signature
Key features
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Spiral construction
Hermetic construction with glass-to-metal
seal
Stainless steel container
Integrated safety vent
Non-corrosive electrolyte
Non-pressurized at room temperature
Restricted for transport (Class 9)
Made in Germany
Designed to meet all major quality,
safety and environmental standards
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Safety: UL 1642 (File MH 12609)
IEC 60079-0, IEC 60079-11
Transport: UN 3090 and UN 3091
Military: VG96915 part 2 and part 154
Quality: IEC 60086-4, ISO 9001, Saft World
Class Continuous program
Environment: ISO 14001
Typical applications
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Smart gas meters
Gas and oil tank level monitoring
Leak detectors
Portable gas detectors
Petrochemical facilities
Mining applications
Electrical characteristics
(Typical values relative to cells stored up to one year at + 30°C max)
Nominal capacity (at 150 mA, + 20°C, 2.0 V cut-off) (1)
Open circuit voltage (at + 20°C)
Nominal voltage (under 1 mA at + 20°C)
Nominal energy (at 150 mA, + 20°C, 2.0 V cut-off)
Pulse capacity (2)
Recommended maximum continuous discharge current (2) (3)
Operating conditions
Operating temperature range
Recommended
Storage temperatures
Allowable (4)
ATEX properties
Cell marking
EC-type examination certificate nb
Short circuit current (max)
Ri (min)
Temperature rise (max)
Temperature class
Physical characteristics
Diameter (max)
Height for the tabbed version (max)
Typical weight
Li metal content
+ 20°C (+ 68°F)
57 A
45 m Ω
+ 107 °C
T4
12.4 Ah
3.2 V
3.0 V
35 Wh
up to 8.0 A
3.5 A
- 40°C / + 72°C (- 40°F / + 161°F)
+ 30°C (+ 86°F) max
- 55°C to + 90°C (- 67°F / + 194°F)
II 2G
BVS 12 ATEX E 026 U
+ 40°C (+ 104°F) + 70°C (+ 158°F)
64 A
85 A
41 m Ω
35 m Ω
+ 112°C
+ 118°C
T4
T4
34.2 mm (1.35 in)
61.5 mm (2.42 in)
115 g
approx. 3.5 g
Dependent upon current drain, temperature and cut-off.
Limitation of the max. current to a lower level, e.g. by a series resistor, may be necessary depending on the electrical properties
of the device and the desired level of protection (ia, ib, ic) and the explosion group (IIA, IIB, IIC).
(3)
To maintain cell heating within safe limits. Battery packs may imply lower level of maximum current and may request specific
thermal protection. Consult Saft.
(4)
Long time storage at high temperature may affect performances. Consult Saft.
(1)
(2)
Termination & part numbers
2.
15 ++ 22 mm
mm
15
0.59” ++ 0.08”
0.08”
0.59”
2.5
2
- 40°C
- 30°C
- 15°C
0°C
+ 23°C
+ 60°C
1.5
500
1000
mm
55 mm
0.20”
0.20”
1500
2000
Discharge current [mA]
Discharge curves at 500 mA at various temperatures
3.5
Cell voltage [V]
max. 34.2
34.2 mm/1.35”
mm/1.35”
max.
mm
55 mm
0.20”
0.20”
15 ++ 22 mm
mm
15
0.59” ++ 0.08”
0.08”
0.59”
max. 61.5
61.5 mm/2.42”
mm/2.42”
max.
4.
max. 34.2
34.2 mm/1.35”
mm/1.35”
max.
3
mm
15 ++ 22 mm
15
0.08”
0.59” ++ 0.08”
0.59”
3.
3.5
0
mm
55 mm
0.20”
0.20”
max. 34.2
34.2 mm/1.35”
mm/1.35”
max.
max. 61.5
61.5 mm/2.42”
mm/2.42”
max.
max. 61.5
61.5 mm/2.42”
mm/2.42”
max.
1.
max. 13.0 mm
0.51”
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max.62.5
61.5mm/2.46”
mm/2.42”
max.
62.5
mm/2.46”
max.
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max.
max.34.2
34.2mm
mm
max.
34.2
mm
1.35”
1.35”
1.35”
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Mid-discharge voltage vs. current at various temperatures
Cell voltage [V]
1. + tab (radial tab on the positive terminal):
4142180403
2. C tab (radial tabs on the positive &
negative terminals): 4142180203
3. Z tab (radial tabs on the positive and
negative terminals): 4142180703
4. End caps: 4142187103
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2.5
2
- 30°C
Storage
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- 15°C
0°C
+ 23°C
+ 60°C
1.5
The storage area should be clean, cool
(preferably not exceeding + 30°C), dry
and ventilated.
0
2
4
6
8
10
12
14
Discharge capacity [Ah]
Warning
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Fire, explosion and burn hazard.
Do not recharge, short circuit, crush,
disassemble, heat above + 100°C (+ 212°F),
incinerate, or expose contents to water.
Do not solder directly to the cell (use
tabbed cell versions instead).
Do not obstruct venting mechanism.
Capacity vs. current at various temperatures
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Capacity [Ah]
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10
8
6
4
2
- 40°C
- 30°C
- 15°C
0°C
+ 23°C
+ 60°C
0
0
500
1000
1500
2000
Discharge current [mA]
Saft
12, rue Sadi Carnot
93170 Bagnolet - France
Tel. : +33 1 49 93 19 18
Fax : +33 1 49 93 19 64
www.saftbatteries.com
Friemann & Wolf
Batterietechnik GmbH
Industriestr. 22,
63654 Büdingen - Germany
Tel. : +49 (0) 6042 954 0
Fax. : +49 (0) 6042 954 190
Doc N°: 31114-2-1014
Edition: October 2014
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
Produced in FR by Soyouzgraphic
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