... battery built-in PTC : High energy density up to 270WH/Kg High operation voltage Nominal capacity: 1400m 3V Li/MnO2 CR123A battery built-in PTC ... PSE, REACH, RoSH, UN38.3 test and certificates. Feature1.High energy density up to 270WH/kg(510WH/dm3)2 ... .High operation voltage,2.8V-3.2V upon loading ... light,medical equipment,toys etc. 3VLi/MnO2 CR123A battery built-in PTC