Light up your fence, deck, or driveway without running a single wire. These solar post cap lights charge by day and glow from dusk to dawn, adding a finished look and nighttime visibility to your outdoor space. Each cap fits square vinyl, plastic, or wood posts from 3.5" to 3.75" and installs in minutes with just two screws (included) — no electrician, no cords, no monthly cost. A crystalline solar panel powers the built-in rechargeable lithium battery (LiFePO4) for long-lasting, weather-tough performance year-round. A simple switch lets you choose your mood: warm white for a soft lantern glow, or cool white for a crisper, modern look. Each fixture puts out 20 lumens — bright enough to define a path or accent a railing without overpowering the night. Measuring 5.63" × 5.63" × 6", these caps feature durable plastic construction with a real glass lens for a premium finish that holds up to the elements.