No electricity in my small shed, so I made a light. I took a solar motion sensor light I had on hand, and mounted it to the inside of the door frame.
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As I step in to the shed the light goes on, illuminating most of the area. Since I mounted it with nails I can slip it off to put it outside and recharge it as needed.


I have a few solar lights with small batteries only good enough to get through one night. How long will your batteries last in that solar light before they go dead? I'm thinking maybe a number of days before the solar batteries self-drain. I am assuming that they have to power the motion sensor 24/7 in a dark shed whether or not any light is actually turned on.
If you need a cheap backup light, I have found the flip lights at Harbor Freight do a fair job and they use standard AAA batteries...
They go on sale often, but I picked up 3 or 4 of them as FREE gifts just for stopping by the store on certain weekends. I doubt they would be as good as an automatic light that goes on when you enter the room, but if your solar light batteries are drained, it might be enough to get you through what you need to do that night until the solar light is recharged the next day.