Battery is fine
For some reason. The consumption is greater then supply from the solar panel. After charging battery without connecting load, battery indicator turns green again. The system is up and running now. I’ve tweak the “on” time for service balcony LED. Let’s see how’s. The consumption balanced up.
One other observation is that the LED will turn on by itself at middle of night. Suspect it is triggered by the cloths hanging in front of the sensor. My presumption is the sensor works only when it senses human heat. May not be the case now.