Does your battery (suddenly) last much less than before? Then it may be that certain software, unconsciously, suddenly uses a lot of power than before, or a setting in your installation that drains the battery more heavily than expected.
To determine whether your battery is still functioning properly, you can generate a Battery Report in Windows 10 as follows:
You can easily generate a battery report by running the command powercfg / batteryreport. Press Windows Key + X, click Command Prompt (Admin), type powercfg / batteryreport at the command prompt and hit Enter. The report is saved under C: \ Windows \ System32 as a battery report.
In this report you can read what the remaining capacity of your battery is, it is common that it decreases between 5% and 15% per year. So if your battery is 2 years old and you arrive at 70% of its original capacity, this is not entirely unusual.