Update on my Leduc Sun Solar Pool Lights:
After 3 seasons both lights suffered failures. Water penetration under the epoxy coating on the solar panel part of the light caused bubbling and cracking, and now not able to charge. I did notice some small bubbles under the coating with one of my two lights, and it was still covered by the 2 year warranty, so it might have been replaced by the manufacturer. In hindsight I shouldn't have ignored the issue.
I'm in Canada, so I don't know if taking them in and out for storage over the winter, or temperature swings during the season had anything to do with the deterioration...or even using the robot to clean pool and scrubbing the surface. I am impressed with the tech, but the longevity (2 -3 seasons) wasn't there for me. Just a touch too pricy for me given the value of our Canadian dollar and the cost to have them shipped.
But as an alternative to traditional LED pool lighting, it could be argued and given some consideration as performance wise they put off awesome light and one could say they last just as long and not as expensive as traditional wired LED pool lights.