Did some measurement of power consumption

Master Toilet LED : 1.1A

Kitchen LED : 1.76A

Kitchen and common toilet LED : 2.06A

All on (Dimmer light) ; 2.32A

Placement of solar panel do have an impact. Due to shades of window grills. In my case, when I place it upright, many strips of shadows cut across the wide of the panel, effectively reducing the “Ampere” output of the panel. Seeing 19W max in full bright sunlight. with a charging current of 1.3A to the battery

Turning the panel sideway and pushing it against the window grill. the panel managed to squeeze out 34W, producing 2.4A charging current to the battery.

This article and this give a very good explanation to the effect of shades on solar panel.