The lamps have a removable back plate, creating a battery replacement is easily possible. Opening is done quite easily without great violence. The backplate itself holds with two screws or adhesive tape. I've tried the tape with me to illuminate the castle cellar door. This is always very dark and therefore difficult to meet with the key. The motion sensor reacts quickly and reliably, as soon as one approaches the lamp. The emerging light is sufficient for this application. The light is very neutral, not very warm (the first image with the corridor meets it quite well). We wanted to use the lamps for the kitchen, but it's really not a pleasant light, rather a harsh light work, so we have removed it again. As Cabinet interior lighting, the lights on the other hand are ideal. In principle, however, I prefer something warmer and more natural light rather.
Each lamp uses four AAA (the smaller) batteries. However, these are not resolved! An input (OFF switch do not possess also. The general processing is appropriate in order and the price.