Charger for Gateway T-6841h Notebook

Bought charger for my mother's HP Envy laptop. So far so good. Delivery was a day sooner than I personally expected with 2 day shipping. Works just as good as OEM charger. Using it as a second charger for home office since it was such a great value. "Intocircuit" brand however not too sure about, their website not up and running to register for warranty. We'll see as to the quality in the next coming months. My only concern would be the charger not using the right voltage, wattage, amperage rate as noted in its labeling. Laptop seems to be recognizing it well enough although time estimations to full charge are off in my opinion however that can always be all across the board from what I've noticed in laptops with at least one year plus old batteries.