A:Answer Believe it or not I own 3 portable electric grills. The bella for at work, a George Forman for at home and a small Proctor Silex that I use to use at work. All 3 have had very poor instructions on cooking. The best advice I can give is this: buy yourself a digital meat thermometer. Then put a couple of burgers on the grill, then after 5 minutes check the temp, if it is not 170 degrees when you stab the burger with a thermometer then give it 3 to 4 more minutes then stab it again. When the internal temp of your burger is 170 degrees it's done. Then record or remember the time it took. It won't change. I dont eat beef otherwise I could give you more of a precise time. I use my grill for pork chops and pork steaks. My bella grill takes 10 minutes exactly for chops and pork steaks unless they are thick cut. Then thick cut take 15 minutes. Country style ribs are about 20 minutes. This grill is 1200 watts. My cooking times with pork never wavers. But you need the thermometer to get you times down.
Do yourself a favor and buy the meat thermometer, most people over cook meat to the point where it's dried out like shoe leather. Using a meat thermometer consistantly, keeps your meat from turning into something only half starved bear would want to eat.