What is JEITA measuring standard?

About JEITA measuring standard:

Settings:
1. Screen saver: None
2. Airplane Mode: ON.
3. Turn off the Windows automatic updates.
4. Complete the initial settings of Antivirus software.

Common settings in Control Panel -> Power Options:
Power Plan:

1. Select Power Saver.
2. Go to Change plan settings
   • Dim the display: Never
   • Turn off display after : Never
   • Put the computer to sleep: Never
     
3. Go to Change plan settings -> Change advanced power settings:
   Battery: Critical battery level -> On Battery: 1%

JEITA Measuring Method A:
Change advanced power settings:
Display -> Display brightness ->On battery: 10%

JEITA Measuring Method B:
Change advanced power settings:
Display -> Display brightness ->On battery: 0%