thank you, that helped alot! I did order cheaper LEDs. 1.59€ LEDs on a 0,5€ Lamp are a bit overkill ... I don`t expect the quality of the LED to be a bottleneck.
It seems to work, but I ll see when I ve got them soldered.
Using LEDs for projects is a nice thing. They could also be used in wood, if you drill holes. One might use these kind of solar lamps and solder a longer piece of cable between LED and the unit. Should be cheaper than buying the solar cell, charge controller, battery etc.
A cheap way to use LEDs in project is to get LED string lights from the dollar store and use them.
Have a nice an blessed easter!