I'm using Acer Aspire E 15 E5-576G.
I installed Ubuntu last year. After installation, I noticed that my battery drains faster than usual.
Because of that, I had to remove Ubuntu and use Windows instead.
I had no similar problem in Windows. The battery works very well, it works 5-6 hours. So, I think the problem does not belong to the hardware.
Last week, I installed Ubuntu alongside Windows and I have the same problem as before.
How can I solve that problem?