What's the difference between these battery indicators?

[netslacker]

Does anyone know the difference between these indicators?

The first one appears briefly but the second one (all on) is the one that stays pretty constant.

MBP 2019 16"

 

[chown33]

See here:

battery charging icons - Apple Community

discussions.apple.com

Found by searching for: macos battery charging indicators menu

I chose those keywords by adding "macos" to two keywords from your thread title ("battery indicators"), along with the keywords "charging" to identify the state, and "menu" to identify their location.