Per your user manual: Do not operate your MacBook Pro on a pillow or other soft material, as the material can block the airflow vents. Never place anything over the keyboard when operating your MacBook Pro. Never push objects into the ventilation openings.
For prolonged use, place your MacBook Pro on a flat, stable surface. Do not place your MacBook Pro on your lap or other body surface for extended periods of time. Prolonged body contact can cause discomfort and potentially a burn.
I don't put my laptop on soft pillows or anything like that for prolonged periods of time (especially when I am running a computer game). It has been sitting on my desk for a week now and the temperature of the battery is still the same. I do not use any kind of outer shell protection. I do not use a keyboard cover.
I just want to know if this is normal or not.