HeroBook Pro extreme battery drain

After using my HeroBook Pro laptop for 1 week, the battery lasts for about 15 minutes. This is not normal. It lasted for hours in the first a few days of use (also, per the specifications, the battery should last about 4-7 hours). Is it possible to debug and fix this problem?

Open CMD, type powercfg /batteryreport /output "C:\battery_report.html" and post the output file here