LTC batteries are primary batteries and not rechargeable. They highlight about a higher energy density in comparison with standard primary cells. The open circuit voltage amounts 3.7V.
Further advantages are the long shelf live because of the small self-discharge rate. LTC batteries are generally not sold to the consumer market. They find more use in commercial and industry application like wireless security systems or consumption capture where mains power independent electronic devices need to be supplied with low current. LTC batteries can operate down to minus 55° where they retain more over than 50% of their rated capacity.