I have a 2017 13 inch Macbook Pro without touchbar. It originally came with a 61 watt power brick. I've installed Coconut battery and I've noticed that when its plugged in and charging it never pulls more than 45w from the adapter. I even tried running geekbench and some videos in the background, but it still won't pull more power. Does this specific model not charge using the full 61 watts? Something else?