Labyrinth Solar Ambient deck lighting without wires. Ambient lighting shines through a cutout geometric design on Deckorators® Labyrinth Solar Post Cap. The solar LED post cap fits over a standard 4” x 4” wood post (inside dimensions: 3-5/8” x 3-5/8”). A stylish way to add wireless lighting to your deck. Available with a cedar base. Product Literature Post Cap Care Information - [pdf - 471 KB] - English - French - Spanish Installation Instructions Solar Post Cap Installation - [pdf 102 KB] - English - French FAQ How long will the rechargeable batteries provided with the solar post cap last? The rechargeable batteries should last approximately one year. Can I use regular, non-rechargeable batteries in the solar post cap light? No, the solar post cap light is designed to be used with rechargeable batteries. If regular batteries are used in the sun, they will destroy the solar collector. We do have Solar Collector Replacement Units available for some post cap lights. How long is the life of the LED light bulbs? With a normal usage of 6-8 hours per day, the LED bulbs should last an average of 10 years. We do have Solar Collector Replacement Units available. SEE ALL FAQ