Log says that the original cpaacity is 45 000 mWh while the current one is just 34 710 mWh. Also I there has been 1687 battery cycles. I am unsure how quickly it changed the capacity as I had to reinstall Windows few days ago but it slightly concerns me. My laptop model is Lenovo ideapad l340 15irh with the original battery.
Not bad for three years.
You can replace it if you want the original capacity back.