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M 20
Primary Li-MnO2 cell
3 V lithium manganese dioxide D-size spiral cell
Saft’s M 20 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.
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 at high current and low
temperature
Low self-discharge compatible with
long operating life (less than 1% after
1 year of storage at + 20°C)
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)
Transport: UN 3090 and UN 3091
Military: VG96915 part 2 and part 154
Quality: ISO 9001, Saft World Class
Continuous program
Environment: ISO 14001
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 (3)
Operating conditions
Operating temperature range (4)
Recommended
Storage temperatures
Allowable (5)
- 40°C / + 72°C (- 40°F / + 161°F)
+ 30°C (+ 86°F) max
- 55°C to + 90°C (- 67°F / + 194°F)
Physical characteristics
Diameter (max)
Height for the tabbed version (max)
Height for the version with +/- end caps (max)
Typical weight
Li metal content
34.2 mm (1.35 in)
61.5 mm (2.42 in)
62.5 mm (2.46 in)
117 g
approx. 3.5 g
Dependent upon current drain, temperature and cut-off.
Dependent upon pulse characteristics, temperature, cell history and application. Higher rates are available under certain circumstances
(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)
Operating temperatures up to + 85°C can be achieved. Consult Saft.
(5)
Long time storage at high temperature may affect performances. Consult Saft.
(1)
Typical applications
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Radio communications
Utility metering
Alarms and security systems
ELTs, EPIRBs
Tracking systems
GSM/GPRS communication
12.6 Ah
3.2 V
3.0 V
36 Wh
up to 8.0 A
3.5 A
(2)
Termination & part numbers
2.
max. 61.5 mm/2.42”
- 40°C
0
max. 34.2 mm/1.35”
15 + 2 mm
0.59” + 0.08”
5 mm
0.20”
15 + 2 mm
0.59” + 0.08”
max. 61.5 mm/2.42”
max. 62.5 mm/2.46”
4.
max. 34.2 mm/1.35”
- 30°C
- 15°C
+ 23°C
+ 60°C
1.5
500
1000
1500
2000
Discharge current [mA]
5 mm
0.20”
max. 34.2 mm/1.35”
3.
2.5
2
max. 61.5 mm/2.42”
1.
Discharge curves at 500 mA at various temperatures
3.5
Cell voltage [V]
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3
5 mm
0.20”
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3.5
15 + 2 mm
0.59” + 0.08”
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max. 34.2 mm
1.35”
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Mid-discharge voltage vs. current at various temperatures
Cell voltage [V]
1. + tab (radial tab on positive terminal):
4142080403
2. C tab (radial tabs on positive and
negative terminals): 4142080203
3. Z tab (radial tabs on positive and
negative terminals): 4142080703
4. +/- end caps (incl. PTC): 4142087103
Other configuration available on request
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2.5
2
- 40°C
Storage
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- 30°C
- 15°C
+ 23°C
+ 60°C
1.5
0
2
4
The storage area should be clean, cool
(preferably not exceeding + 30°C), dry
and ventilated.
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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
+ 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°: 31111-2-1014
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