The solar cell with 3 permanently installed, but replaceable buffer battery is in the middle in the flower and is from noon in the penumbra. Nevertheless, the charge is sufficient to fuel the lamps of dawn until dusk. How it will then behave in the cold season remains to be seen.
The total installation took just a few minutes: Screw handle / holder in the solar panel, the insert three separate plug the LED in the panel (it would go only 2 lamps, but then a connection is open to moisture and dirt) and then the cable some hide in the tub and in the bed: Done!
Anyway, I am very satisfied with this set. Only one should remember that there are each 6 LED on a "light ring"; looks at first glance very technically - gefällts us!