onesojourner:
This is indeed meant for the outdoors. I need it to be a set it and forget it kind of thing.
Ok cool, you don't need a photo resistor for the outdoor project.
I am ok with the battery bank idea, but I am not sure I have seen one that will stay on all the time. They usually require a button press to turn on after charging. If you know of one that is different let me know and I will check it out.
Actually there are models that outputs without a button press. Like this one.
I have a few straw hat LEDs that I pulled from a busted headlamp. So that is an option. When the batteries are fully charged would that damage these LEDs?
Even if the batteries are not at full charge your LEDs will be damaged. You need to add a simple resistor to prevent that from happening. Here, this site will help you choose the right resistor value. Just make sure you set the source voltage to 5 volts since the power bank always outputs at 5v. 