Burn time very disappointing ...

Actually, I was initially very excited about the stars that I have placed in the children's room of my daughter to drive monster ;-) but unfortunately they only light up at most 10 minutes to get light. After 20 minutes, only one bright gleam. Although the adhesive material is sufficient (when it sparingly from the beginning used), etc., but I would find something like double-sided tape much better, because the adhesive when removing the star or if times a fall from the ceiling, does not stick to the star but on the wall and has to be scraped down with difficulty.