Quad, starts and runs. Charger show battery full. Battery shows no lights???

Please help confirm your aircraft model, thanks.
When pressing power button, nothing happens, but aircraft will start normally, right?
You noticed this after a firmware upgrading or anything else?
It's appreciated if you can record a small video here.

Lights only show when the lipo level is less than 90% when you plug the charger in . But should show when you turn the drone on?