Just recently, I have noticed that my battery life has gone down the drain on my Alienware 15r2 laptop. It used to be able to last me a whole day, 4-6 hours browsing the web or using Google docs. But now it barely lasts 2 hours. I have noticed that it has getting warmer for the light use, with CPU and GPU temps in the upper 50°C, but CPU and GPU loads are 0-10%. I downloaded BatMon, a battery monitoring software, and I left my laptop normally how I used it during these light sessions, and it showed the discharge rate was in between 32000 and 36000 mW, which is high. I did the same tasks on my dad's business laptop, which has similar specs, and it only drew about 14000mW. I have not installed any new programs besides batmon, but I changed my power profile from balanced to power saver before the problem started. I tried updating drivers and firmware, but no change. I then closed all background processes like Google drive, CCleaner, etc, and still no change. Anyone have an idea why consumption and temps are so high?
Laptop specs: I7-6700HQ, GTX 970M, 32Gb ram, Intel 600P 500gb SSD, 1tb hdd, 1080p display, 96Whr battery
My dad's laptop: I7-6820HQ, Quadro M1000M, 1Tb nvme m.2 ssd, 16gb ram, 1080p display, 90Whr battery
~~EDIT~~ Today I just tore apart the laptop to see what the thermal compound situation is, and it is horrible. I found my heating problem. The surfaces of both chips are barely covered in any paste. No wonder why my temps are horrible.
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~~SOLUTION EDIT~~ As said in the comments down below, I replaced the thermal compound for the high temperature issue and cleaned up dust from the heatsinks. Temperatures are now much more stable than they used to be, and they dropped 10+ degrees C. For the battery consumption issue, reinstalling windows seems to have fixed the problem. Idle power usages are in between 9 and 16 watts, much much better than the mid 30s I was getting. Thanks everyone for the help!