If you have ever faced a similar case, it is time to try to calibration your laptop’s battery. Laptop battery calibration helps you get a more accurate estimate of how much battery power your laptop has left. So, that’s why battery calibration is necessary.
Calibrate Battery Manually: Instead of relying on the HP Assistant, try manually calibrating the battery. Here's a step-by-step guide: Charge your laptop to 100%. Disconnect the charger and let the battery drain until the laptop shuts down. Reconnect the charger and power on the laptop. Repeat this process a couple of times.
If you're comfortable accessing your PC's BIOS, you might find a battery calibration tool within. This all depends on the laptop and manufacturer, so don't be alarmed if you can't find it. Likewise, some laptop manufacturers will include a calibration tool within Windows 10 in order to easily take care of the problem.
Calibration occurs by applying a full charge, discharge and charge. This is done in the equipment or with a battery analyzer as part of battery maintenance. Two things to notice here: (1) According to this page, it’s not enough to drain and then charge—you have to start by charging it fully.
All newly-installed smart batteries should be calibrated as soon as possible. This helps your phone or laptop get an accurate reading on the battery’s state of charge.
Therefore, if you intend to calibrate your device battery you need to let it run down past the warnings until it shuts down automatically BEFORE recharging, otherwise you may not discharge the battery sufficiently to register the battery management systems discharged flag, thus rendering your attempt to calibrate the battery incomplete.