... AC-DC Laptop Adapter LED display indicates output and USB port voltage,Auto-Adjust voltage Input Condition ... 18V.5/19V/19.5V USB5V 1A Output Ripple And Noise : 1% Max Protection : OCP OVP ... to 90% Charging the battery (if needed) and maintaining its charge. Many AC cord options to ... Acer, Asus, Apple, Dell, Fujitsu, Gateway, HP/Compaq, IBM, NEC, Samsung, Sony, Sharp, Toshiba etc series laptops/Notebooks