If battery on samsung laptop is only charging to 80%, this is because Battery Life Extender function in Samsung Control Center is enable. Battery Life Extender sets the maximum battery charge level to 80% in order to extend the life of laptop’s battery. Follow below steps to disable Battery Life Extender in order to fully charge laptop’s battery.
Samsung laptop battery on charge up to 80% only due to Battery Life Extender
Windows 10
Step 1: Open Samsung Settings and then click Power Management.
Step 2: Under Battery Life Extender + section, slide slider to OFF.
Disable Battery Life Extender in Windows 10
Windows 8
Step 1: Open Samsung Settings and then click Power Management.
Step 2: Click Battery Life Extender tab.
Step 3: Slide slider to Off.
Disable Battery Life Extender in Windows 8
Windows 7
Step 1: Press Fn + F1 keys on keyboard to open Control Center.
Step 2: Click on Battery Life Extender.
Step 3: Slide slider to Off.
Disable Battery Life Extender in Windows 7