Laptop battery calibration not working even after trying all the methods and bypasses win 10

The image shows how fast the battery is wearing out. but then when I checked today it gave me about normal battery backup. The discharging stops at 5.5% then it stays on for about 3 more hours on light usage. That's why I thought calibrating it again will solve things but no. Things I tried: disabled critical power actions then drained the battery fully then recharge. uninstalled battery driver then drain it then recharge. using acer software to recalibrate. nothing working.

Question by S Sarma on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.