Ultralife introduced the world's first long lasting Lithium 9-Volt over 20
years ago, with over 100 million sold. Ultralife's Lithium 9-volt battery is a
consumer-replaceable battery that lasts up to 5 times longer than ordinary
alkaline 9V batteries and 10 times longer than carbon-zinc batteries. It has
the highest energy density, flattest discharge voltage curve, longest shelf
life, widest operating temperature range, and lightest weight of any
comparable 9-volt battery. A 10-year service / shelf life makes our 9-volt
battery the choice for major smoke alarm manufacturers for their premium lines
of 10-year ionization-type smoke alarms. As a consumer-replaceable battery,
consumers can instantly upgrade any application requiring a 9-volt battery.