We have these illuminating our pond. It's much safer because if a light drops in the water there's no chance of the electric touching the water. Especially living in the United Kingdom - we're not renowned for having a lot of sun. The sun chooses when it wants to come out - winter solstice doesn't matter to our sun! The lights tend to be very sensitive to soaking up the light so I've noticed they do not need much to be fully-charged. They then last for a good few hours. I'd say around 4 to 5 hours which will see you through to the time you go to bed.

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