Verifone VX670/VX680 POS machine battery - Sample is available - Li-ion battery pack - 1800mAh - 7.4V Verifone VX670/VX680 POS machine battery Specifiactions: Cell103450 x 2Capacity1800mAhInternal resistance<300mΩCycle life>400 timesNominal voltage7.4VMax. charge voltage8.4VDischarge cut-off voltage5.50VOver-charge protection4.35V±50mV single cellOver-discharge protection2.3V±80mV single ...