Lithium-Sulfur Dioxide batteries have a metallic lithium anode (the lightest of all the metals) and a liquid cathode comprising a porous carbon current collector filled with a sulfur dioxide (SO2) solution. They deliver a voltage of 2.9 V and are cylindrical in shape, in A, C and D size.

Lithium-sulfur dioxide cells have a high energy density and a good capability for delivering repeated bursts of high power. This capability derives from the spiral construction and is utilized in most of the applications addressed by this type of cell.

This kind of cell is mainly used in defense applications, though civil applications also exist.

•High operating voltage, stable during most of the application lifetime
•Wide operating temperature range (-50°C to +75°C)
•Good resistance to passivation
•Non-flammable (but corrosive) pressurized electrolyte, quickly expelled in case of venting
•Less than 3% capacity loss during storage at ambient temperature before use
•Released capacity independent from cell orientation
•Unrivalled pulse capability
•Compliance with the European directive RoHs

Main applications:
•Military radio communication
•sonobuoys and other underwater applications
•Emergency location transmitters beacon
•Professional electronics
•Cardiac defibrillators


Cylindrical Shape
Standard Type

ModelSizeNominal Capacity (mAh)Nominal Voltage (V)Diameter (mm)Height (mm)Weight (g)Max. Continuous Current (mA)Max. Pulse Current (mA)Data Sheet
ModelSizeNominal Capacity (mAh)Nominal Voltage (V)Diameter (mm)Height (mm)Weight (g)Max. Continuous Current (mA)Max. Pulse Current (mA)Data Sheet
WR18505 A 2000 2.9 18.5 50.5 28 1500 2000 PDF
WR26500 C 3300 2.9 26.2 50 49 2000 3000 PDF
WR34615 D 7800 2.9 34 61.5 100 4000 5000 PDF

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