Benefits
l High voltage response, stable
during most of the lifetime of the
application
l Wide operating temperature
range (- 60°C/+ 85°C)
l Low self-discharge rate
(less than 1 % after 1 year of
storage at + 20°C)
l Easy integration into compact
systems
l Superior resistance to
atmospheric corrosion
Key features
l Stainless steel container
and end caps
(low magnetic signature)
l Hermetic glass-to-metal sealing
l Non-flammable electrolyte
l Underwriters Laboratories (UL)
Component Recognition
l Compliant with IEC 60086-4
safety standard and
IEC 60079-11 intrinsic safety
standard
l Restricted for transport (Class 9)
Main applications
l Utility metering
l Automatic meter readers
l Buoys
l Measuring equipment
l Industrial applications
l Professional electronics
Optional upon request
l Low magnetic version
Primary lithium battery
LS 26500
3.6 V Primary lithium-thionyl chloride (Li-SOCl
2
)
High energy density
C-size bobbin cell
Cell size references C
May 2010
Electrical characteristics
(typical values relative to cells stored for one year or less at + 30°C max.)
Nominal capacity 7.7 Ah
(at 4 mA + 20°C 2.0 V cut-off. The capacity restored by the cell varies
according to current drain, temperature and cut-off)
Open circuit voltage (at + 20°C) 3.67 V
Nominal voltage (at 0.5 mA + 20°C) 3.6 V
Nominal energy 27.72 Wh
Pulse capability: Typically up to 300 mA
(300 mA/0.1 second pulses, drained every 2 mn at + 20°C from undischarged cells with 10 µA
base current, yield voltage readings above 3.0 V. The readings may vary according to the pulse
characteristics, the temperature, and the cell’s previous history. Fitting the cell with a capacitor
may be recommended in severe conditions. Consult Saft)
Maximum recommended continuous current 150 mA
(Higher currents possible, consult Saft)
Storage (recommended) + 30°C (+ 86°F) max
(for more severe conditions, consult Saft)
Operating temperature range - 60°C/+ 85°C
(Operation above ambient T may lead to reduced capacity and (- 76°F/+ 185°F)
lower voltage readings at the beginning of pulses. Consult Saft)
Physical characteristics
Diameter (max) 26.0 mm (1.02 in)
Height (max) 49.1 mm or 50.4 mm
(1.93 in or 1.98 in)
depending on finish type
Typical weight 48 g (1.7 oz)
Li metal content approx. 2.0 g
Available termination suffix
CNR radial tabs
3 PF, 3 PF RP radial pins
CNA (AX) axial leads
FL flying leads... etc.
Storage
l The storage area should be clean,
cool (preferably not exceeding
+ 30°C), dry and ventilated.
Warning
l Fire, explosion and severe burn
hazard.
l Do not recharge, short circuit,
crush, disassemble, heat above
100
°
C (212
°
F), incinerate,
or expose contents to water.
l Do not solder directly to the cell
(use tabbed cell versions instead).
Doc. N
o
31016-2-0510
Information in this document is subject to change without notice
and becomes contractual only after written confirmation by Saft.
For more details on primary lithium technologies please refer to
Primary Lithium Batteries Selector Guide Doc N
o
31048-2.
Photo credit: Saft
Société anonyme au capital de 31 944 000
RCS Bobigny B 383 703 873
Produced by Arthur Associates Limited.
Saft
Specialty Battery Group
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
LS 26500
1
10
100
1000
+ 70ºC
+ 20ºC
- 20ºC
- 40ºC
3.6
3.5
3.4
3.3
3.2
3.1
3.0
2.9
2.8
2.7
2.6
0.1
1
10
100
1000
0.01
0.1
1
10
100
1000
10000
100000
3.9
3.7
3.5
3.3
3.1
2.9
2.7
2.5
2.3
2.1
1.9
7.0
6.0
5.0
4.0
3.0
2.0
1.0
+ 70ºC
+ 20ºC
- 20ºC
- 40ºC
25 Ohms/125 mA
75 Ohms/35 mA
250 Ohms/14 mA
5000 Ohms/0.7 mA
1
10
100
1000
+ 70ºC
+ 20ºC
- 20ºC
- 40ºC
3.6
3.5
3.4
3.3
3.2
3.1
3.0
2.9
2.8
2.7
2.6
0.1
1
10
100
1000
0.01
0.1
1
10
100
1000
10000
100000
3.9
3.7
3.5
3.3
3.1
2.9
2.7
2.5
2.3
2.1
1.9
7.0
6.0
5.0
4.0
3.0
2.0
1.0
+ 70ºC
+ 20ºC
- 20ºC
- 40ºC
25 Ohms/125 mA
75 Ohms/35 mA
250 Ohms/14 mA
5000 Ohms/0.7 mA
1
10
100
1000
+ 70ºC
+ 20ºC
- 20ºC
- 40ºC
3.6
3.5
3.4
3.3
3.2
3.1
3.0
2.9
2.8
2.7
2.6
0.1
1
10
100
1000
0.01
0.1
1
10
100
1000
10000
100000
3.9
3.7
3.5
3.3
3.1
2.9
2.7
2.5
2.3
2.1
1.9
7.0
6.0
5.0
4.0
3.0
2.0
1.0
+ 70ºC
+ 20ºC
- 20ºC
- 40ºC
25 Ohms/125 mA
75 Ohms/35 mA
250 Ohms/14 mA
5000 Ohms/0.7 mA
Dimensions in mm.
Ø 25.8 ± 0.2
2.0 ± 0.2
49.8 ± 0.6
0.4
Ø 6.0 ± 0.1
(on flat surface)
Ø 18.0 ± 0.2
(on flat surface)
Ø 25.8 ± 0.2
Ø 13.4 ± 0.2
(on flat surface)
Ø 18.0 ± 0.2
(on flat surface)
0.8 ± 0.2
0.4
48.7 ± 0.5
Finished version with
protruding positive end cap
Current (mA)
Cell voltage (V)Cell voltage (V)Capacity (Ah)
Time (hours)
Current (mA)
Restored Capacity versus Current and Temperature (2.0 V cut-off)
Typical discharge profiles at + 20°C
Voltage plateau versus Current and Temperature (at mid-discharge)
Finished version with
flat positive end cap
