My laptop battery down and shut down immediately when plug out the charger

[Saikat23]

When my laptop is plug in on charger it's work slow but when i plug out immediately the charge fall 100% to 95% then 75% then direct comes to 0% suddenly and laptop got shutdown.  

[Pallipurath]

Hi @Saikat23 

Welcome to the HP Support Community.

Thank you for posting your query.

I understand that you are facing issues with the Battery, However the laptop works slowly while connected to the charger, then after unplugging the charger the battery percentage drops rapidly (100% , 95% , 75% ,0%) and shuts down . This usually indicate a battery calibration issue, failing battery cells, incorrect battery reporting, or a power management problem. I would request you to please follow the steps:

Perform a hard reset 

• Shut down the laptop completely.
• Disconnect the charger.
• Remove all external devices (USB drives, mouse, etc.).
• If the battery is removable:
• Remove the battery.
• Press and hold the Power button for 30 seconds.
• Reconnect the battery and charger.
• Turn on the laptop and check battery behavior.

HP Hardware Diagnostics for battery.

• Turn off the laptop.
• Turn it back on and repeatedly press Esc.
• Press F2 to open HP PC Hardware Diagnostics.
• Select:
  Component Tests > Power > Battery Check
• Run the test.

Calibrate the battery

• Charge the laptop to 100%.
• Keep the charger connected for another 2 hours.
• Disconnect the charger.
• Use the laptop normally until the battery reaches around 5%.
• Allow it to shut down automatically.
• Charge it back to 100% without interruption.
• Perform this step for three times.

Windows battery report

• Right-click the Start menu.
• Select Terminal (Admin) or Command Prompt (Admin).
• Run: powercfg /batteryreport
• Windows will create a battery report.
• Open the generated file and check:
• Design Capacity
• Full Charge Capacity

Hope this helps, Please revert if the issue persists.

Take care and have an amazing day!