Your purchase notes
Keep the details in one place.
Start with what the light needs to do and where it will charge. A path marker, wall light and floating pool light need different checks.
Look for a stated rating and installation guidance that cover the intended setting. Keep the panel position in the plan, especially where buildings or plants cast shade.
Plan the cost of your purchase
Explore your own cost-per-use scenario. Enter a realistic plan and include known extras. The result is arithmetic, not a claim about durability, performance or resale value.