How adjustable are the Spotlights? Looking to install my shed

After getting the solar spot lights I took them into my shed and I was shocked to see that the signal was still strong in there. Since my shed does not have electrcity I am thinking of adding a battery spotlight in the celing for extra light. Are you able to adjust the angle of the light? I do not see this noted in the instuctions or in the videos. I want it to look like |-- 90degs from the base.