primary batteries are used in a wide range of applications,
as backup battery for SRAM or your computer mainboard, to power
electronic instruments with high requirements of reliability and
life span (like electronic wattmeters, thermometers, etc.). They
can be used in watches, calculators, memory cards, electronic keys,
a very low self discharge rate and therefore very long life time
(up to 5 years) as well as a wide operating temperature range.