During the day the sun charge the rechargeable AA battery inside the solar panel (like a bee :)) that's why we called ourselves PowerBee .
When dusk falls the charge stored in the batteries power the lights.
In the morning the lights turn off automatically and charge up again ready for the night ahead.
Our Patio Light is fully automatic so you don't need to turn it on and off each night, but you can operate them manually if you like.
You may have to change the batteries every year or so but to be honest sometimes batteries can last for years
We own a large plot & farmhouse in Devon and have quite a few outbuildings and a large previously dark courtyard, we wanted some economic cool lighting that didn’t involve mains as it’s just not practical to run cables under our concreted yard, in total installed 12 of these solar wall lights, they don’t operate all night long and we have switched them to the winter setting but most of them go nearly all night i(in October!) depending upon where they are situated, and we are really pleased with the results I would definitely recommend these to anyone who doesn’t want to spend a fortune installing mains cabling but want some lights Which work well and are very cost effective, and can even work through hurricane Brian! :)