... built-in PTC High operation voltage Be safe for transportation 3V Li/MnO2 CR123A battery built-in PTC : High energy density ... up to 270WH/Kg High operation voltage Nominal capacity: 1400mA 3V Li/MnO2 CR123A battery built-in PTC Product details Place ... way radio, fire alarm,emergency light,medical equipment,toys etc. 3V Li/MnO2 CR123A battery built-in PTC