T-SUN 4x4 Post Cap Lights 6 Pack for Vinyl and Wood Posts - Solar Deck

In this review the T-SUN 4x4 Post Cap Lights are judged as a practical, low-effort way to add consistent outdoor illumination to fences, decks and garden posts; the single biggest reason to buy is that they deliver solar-powered, dusk-to-dawn light without wiring or an electrician. Installed as a 6-pack, these lights suit homeowners who want a neat, weatherproof accent that offers selectable color temperature and straightforward mounting for both 4x4 wooden and vinyl posts.

Key Features

• Two base sizes: Includes removable inner base so the lights fit both 3.5x3.5 in wooden posts and larger vinyl post caps for a cleaner, tailored installation.
• Dual lighting modes: Switch between Warm White 3000K for a cozy feel or Cool White 6000K for brighter, more task-oriented illumination.
• Bright LED array: Each cap uses 24 high-brightness LEDs and a transparent lens to amplify light, making pathways and deck edges easier to navigate at night.
• IP65 waterproof construction: Heavy-duty PP plastic and upgraded seals resist rain, snow, and temperature swings so the lights hold up outdoors year round.
• Solar powered: Built-in high-efficiency solar panel charges in about 6-8 hours of sun and automatically provides roughly 10-12 hours of light nightly with no wiring.
• Value pack and support: Six lights come with mounting hardware, ED reflector and a 2-year warranty backed by U.S. support for risk-free replacement.

Who It's For

These post cap lights are best for homeowners with 4x4 posts on decks, fences, gates or mailboxes who want an easy, low-cost lighting upgrade that requires no wiring. Renters or owners who prefer a DIY install will appreciate the removable inner base for vinyl posts and included mounting hardware.

Shoppers who need ultra-precise fitment for nonstandard posts or who require integrated motion sensing or app control should look elsewhere; this product is focused on simple, automatic dusk-to-dawn illumination rather than advanced smart features.

Pros & Cons

Pros

• Easy installation with two base sizes accommodates most 4x4 wooden and vinyl posts.
• Selectable Warm White or Cool White modes let users tailor the ambiance.
• Durable, IP65-rated body and long nightly run time from solar charging.
• Six-pack and 2-year warranty provide good value and peace of mind.

Cons

• Fit and functionality may be mixed on unusually sized posts, so measuring before purchase is important.
• No advanced smart features such as app control or motion activation; operation is automatic dusk-to-dawn only.

Specifications

Product type	Solar post cap light, 6-pack
Base sizes	Wood posts 3.6x3.6 in base; Vinyl option after removing inner 3.5x3.5 in base yields 4.1x4.1 in
LEDs	24 high-brightness LEDs per light
Color temperatures	Warm White 3000K and Cool White 6000K
Waterproof rating	IP65
Solar charge time	Approximately 6-8 hours
Nightly run time	Approximately 10-12 hours

Our Verdict

The T-SUN 4x4 Post Cap Lights are a sensible buy for anyone who wants reliable, no-wiring outdoor illumination with selectable warm or cool tones and durable IP65 construction. They represent good value as a 6-pack with included hardware and a 2-year warranty, but buyers should measure post caps first to avoid any fit issues on atypical posts.

Frequently Asked Questions

Do these fit both wood and vinyl 4x4 posts?
Yes; the lights include a removable inner base so they fit standard 3.5x3.5 in wooden posts and larger vinyl post caps when the inner base is removed.

How long do they run each night?
With 6-8 hours of sunlight the built-in solar panel typically provides about 10-12 hours of automatic light per night.

Are they weatherproof?
Yes; the units use IP65 seals and heavy-duty PP plastic designed to withstand rain, snow and varying temperatures.