With 2 18650 batteries, it does its job just fine. It has three functions. It can lightly illuminate at night and activates its intense spotlight with the motion sensor when something moves in front of it. Then its lighting is quite intense. Despite its cheap construction (after all, it costs only 5 euros), it does its job perfectly. The advantage is that it looks like a camera, so it also serves as a deterrent. I have had it for 3 years now and it has no problems. I had bought 2. It covered a 70 square meter courtyard. These days, strong wind blew off the solar panel of one of the lights at the top. However, I plan to buy another one because at this price, it has a very satisfactory performance in lighting, even in adverse conditions such as a seaside location where it is exposed to wind.