Despite initial distrust, you know what always sol everything at the discounters on battery LED lighting is offered, I am pleasantly surprised. The light is bright and the motion speaks very well to movements. I have the lamp in the open, without shelter attached, and do them without any interruptions their services. As a shortcoming, I should mention that one but the English language must be powerful, because, unfortunately, the instructions are not in German. Now it may not be easy to insert batteries, but the applier (3 small cog that should replace simply) is somewhat complicated. For this purpose, the holder must be removed to trace out the holes. Not completely tighten the screws, threading case back into the 3 holes and slightly downwards. Then the lamp sits but also bombproof. As already mentioned, this luminosity I had the little "thing" not have expected. Overall, a good buy if you dark corners (stairs, sheds, garden cabinets ect) has to be poorly connected to the electrical system. How long can I keep the batteries too early to say, but for more than 2 weeks doing the nightly light their services without brightness loss. The light radius is more than 2 meters, and also can be adjusted selectively via grid setting. I personally believe that is the lamp quite capable, a garage illuminate if one centrally mounted on the ceiling.