Laptop Charger for HP Probook EliteBook Revolve Business: 250 450 455 640 645 650 745 820 840 850 G1 G2 G3 G4 G5 G6 463958-001 609939-001 PA-1650-02HC PA-1900-18H2 741727-001 USA UL Listed 2Y Warranty

i bought this to power my laptop on an extended trip to support a ham radio event my main concern is that some inverter power supplies produce a lot of noise in the radio as we use this one produced no discernible noise in the 2 meter or 70 centimeters radio as we were using everything worked fine i was leery about getting other than an hp adapter to use while in the car for example listening to audio books downloaded from youtube while traveling long distances some of this concern resulted from a feature of the hp adapter that allowed the charging of the laptop's battery to be controlled reviewers differed as to whether this capability was a feature or a defect g the pwr plus charger also puts out about one stroke two volt less juice than the oem ac adapter no worries now this charger feels like oem robust sturdy and well designed the elitebook 8470p bios and power management circuitry