If you’re technically inclined, a simple bash script with a for loop could dump the time and discharge rate to a text file every minute. Then you could copy/paste that into LibreOffice calc and do yourself some pretty graphs, or whatever.
edit: just found a tool called powerstat which looks like it does sampling over longer intervals.
sudo apt install powerstat
For perspective, that’s like 6 years of full-time employment. I am equal parts impressed and horrified.
At the very least, that game has cost you over USD 87,000 in those six years in terms of money not earned. (assuming 12,000 hours of minimum wage work).