The computer battery is designed to calibrate on its own over time with normal usage, and will provide a more accurate reading as the computer completes multiple charge and discharge cycles. The steps outlined below will accelerate this process and allow the computer to provide a more accurate reading of the battery’s charge capacity.
You can manually calibrate the battery on your HP computer by completing a full charge and discharge cycle. To complete the charge and discharge cycle, you must perform the following steps:
note:
The purpose is to drain or discharge the battery, not get the results of the test. The battery will discharge and the computer will power off before the test results can be displayed.
- Charge the computer to a full 100 percent.
- Unplug the AC power from the computer.
-
Click
Start, select the
Power icon and click
Shut down.
-
Power on the computer and immediately press the
F2 key repeatedly, about once every second until the
HP PC Hardware Diagnostics UEFI menu displays.
-
Select
Component Tests in the main menu.
Figure 1. Select Component Tests.
-
In the list of Components Tests, select
Memory.
Figure 2. Select Memory.
-
Select
Extensive Test.
Figure 3. Select Extensive Test.
-
Select
Loop until error to start the test. Allow the test continue until the battery is completely discharged and the computer shuts down completely.
- Allow the unit to rest for 5.5 hours.
- After the battery is fully discharged, recharge the battery to full capacity.
- Allow the unit to rest for 2 hours.
note:
This test only discharges the battery and does not impact the memory.