Hi Guys, Last week I bought a MacBook Pro 15 inch 2018 base model (2.2, 256gb, 555x). So far I'm happy with the computer. However, my main problem is the battery. After a maximum of 4 hours the battery dies, during normal use. Searching the web, with a few tabs open, have the screen on 70% brightness. Maybe a few video's on YouTube with Safari. Besides, I looked at the GPU History and it shows "AMD Radeon 560", but I have bought the AMD Radeon 555x. Can someone explain me why this is? See the image attached. Thank you for your help. Best, J.R.