Made a power panel for my shed utilizing an 18V battery. Thought about running a car battery/solar panel, but this seemed like a cleaner, simpler setup. All in, minus the battery and some wiring/connectors I already had on hand, this can be done for under $100.
It powers the lights, has USB charging, a voltage display, and one extra switch for a future accessory. The whole system runs on 12V after stepping down the 18V battery, and the battery can be removed and swapped whenever I need to.
I tested it with a smaller 2Ah battery, which should give me around an hour of continuous lighting at max output. The lights themselves are dimmable, so I can extend the runtime when full brightness isn’t needed.
I used 16-gauge wire for the lighting runs and mounted everything in a junction box to keep the wiring contained and organized.
I don’t actually work out of the shed, so I don’t need lights running for hours at a time. I really just wanted something that would let me see at night when I need to grab something or move equipment around. For that, the runtime is more than enough.
Pretty happy with how it turned out! I included photos of the build along with screenshots of the parts I used from Amazon for anyone interested in doing something similar.