Lithium Batteries are classified as lithium primary battery (or non-rechargeable battery) and lithium secondary battery (or rechargeable battery) roughly with recharging capability.
Comparing with lithium secondary batteries, Lithium primary batteries have some limitation of applications and demands, but their demand is steadily increasing with the superior performance in industrial applications requiring long term lifetime without maintenance.
Lithium primary batteries have different voltage and performance upon what cathode and anode materials are used.
Following is the comparison table of commonly used lithium primary batteries.
|1~2%||~3%||1% under||1~2%||@60’C 0.5%
|Application||Security, Alarm, OBUs||Military||Military, Industrial OBUs, Metering||Industrial||Metering, OBU, Military||Gas,
|Limited applications||Safety issue, Long life,
Initial voltage drop
From above lithium primary batteries, 3.6V Lithium Thionyl Chloride Battery has the following characteristics.
The battery has 3.67V as OCV and it is the highest voltage range among batteries.
The battery’s operating voltage keeps stable during its service life. Generally, it has stable working voltage until 70~90% per discharge current and then starts to drop.
Wide Operating Temperature Range
The battery can be used at wide range of operating temperatures, -55~+85’C. High temperature version can be used at Max. +130’C or +150’C.
Superior Long Shelf Life
The battery has very low self discharge, less than 1% per year at room temperature, so it provides actual shelf life of over 20 years. LiCl film on the lithium anode surface can reduce the self discharge whereas it can cause initial voltage drop with passivation.
High Energy Density
The battery provides the highest energy density (max. 700Wh/kg) among primary batteries.
Lithium Thionyl Chloride Batteries have bobbin structure and spirally wound structure.
Bobbin structure provides unique safety with chemical reactions of oxidation and reduction and internal dead space and very limited amount of lithium and the position of lithium against the inner wall of the cell case. Thus, there is no excessive heat generation and explosion under short circuit conditions.
Spirally wound structure may cause explosion under abnormal conditions, so it requires safety vent and fuse.
COROS Battery has Li-SOCl2 Bobbin Batteries (1/2AA, 2/3AA, AA, A, C, D size) and Li-SOCl2 Spirally wound Batteries (C, D size) with extra high temperature batteries.
Major applications are the devices requiring long life devices with low current or medium currents like memory backup, electric energy meters, water meters, calorie meters, sensors, security units, medical, military and etc.
3.0V Lithium Manganese Dioxide Battery has following characteristics.
- High and stable voltage, Lifetime estimation upon working voltage
- External application temperature range -30~+60’C
- Low self discharge: 1% per year at room temperature
COROS Battery has Li-MnO2 (CR123A, CR2, CR17450, CR17505 and etc.)
Major applications are Security devices, LED lantern, Smoke detectors, AED (Defibrillator), Beauty equipment and etc.