Brightown 4x4 Solar Post Cap Lights, 12-Pack, 16 LEDs

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Product guide

Brightown 4x4 Solar Post Cap Lights, 12-Pack, 16 LEDs

LEDs: Brightown 4x4 Solar Post Cap Lights are a 12-pack of solar-powered post lights for wood or vinyl fence posts. Their two listed light modes offer warm or cool white, while the modest 20-lumen output is suited to accent lighting rather than strong area illumination.

At a glance

Listing describes two selectable color modes: 3000K warm white and 6000K cool white. The separate specification table only lists 3000 Kelvin.
Solar charging is claimed to take 6–8 hours in daylight, with automatic lighting at night.
The listing says the caps fit standard 4x4 wood posts with a 3.5-inch inner dimension and are compatible with modern vinyl posts.
A built-in dusk-to-dawn sensor is claimed for automatic operation.

Price

$38.69Save 23%

Reference price: ~~$49.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

A 12-pack can cover multiple fence or deck posts in one purchase.
Solar power avoids a wired electrical connection, according to the listing.
Warm and cool white modes provide a choice between softer-looking accent light and a cooler tone.

Cons

The listed maximum output is 20 lumens, which limits suitability for buyers seeking broad or bright functional lighting.

Technical specifications

17 specifications

Identity and design
Brand	Brightown
Pack size	12 Packs
Fixture type	Post Light
Color	Black
Style	Modern
Material listed	Acrylonitrile Butadiene Styrene
Dimensions	10.03"L x 9.25"W x 4.92"H

Lighting
Light source	LED
Number of light sources	16
Light colors	warm white, cool white
Brightness	20 lm
Maximum light output	20 lumens
Color temperature	3000 Kelvin
Switch type	Toggle

Power and installation
Power configuration	Solar Powered
Installation type	surface_mount

Materials and protection
Water resistance listed	Waterproof

What to know before buying

Listing details to confirm

Listing details are inconsistent about color temperature: the specification lists 3000 Kelvin, while the feature text describes 3000K warm white and 6000K cool white modes. The claimed 16 LEDs also differs from the feature wording that does not specify an LED count. Confirm the mode and LED details for the selected listing. The stated 20 lm brightness and 20-lumen maximum are consistent.

Who is it for?

A good fit for

Fence and deck owners looking for solar accent lights on compatible 4x4 wood or vinyl posts.
Buyers who want a multi-light pack and the choice of warm or cool white lighting.

Less suited to

Anyone needing high-output task, security or wide-area illumination.
Buyers who need confirmed performance in shade or a guaranteed runtime, neither of which is specified.

Brightown 4x4 Solar Post Cap Lights, 12-Pack, 16 LEDs · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 70 ratings

5 stars76%76%
4 stars12%12%
3 stars7%7%
2 stars0%0%
1 star5%5%

Customer feedback describes the lights as bright and appealing on decks, while reliability reports are mixed, including reports that some units did not work. Those perceptions matter for a 12-light accent setup, where uneven operation could leave gaps. The listing specifies 20 lumens, so the reported brightness should be understood in the context of low-output accent lighting rather than broad illumination.

Positive themes

Customers describe the lights as bright and appealing in deck settings.

Mixed feedback

Reliability feedback is mixed, with reports that some units did not work.

Frequently asked questions

How bright are these post cap lights?

The listing gives 20 lm brightness and a maximum output of 20 lumens. That is a modest level for accent lighting, not a substitute for bright area lighting.

Can I choose between warm and cool white?

The feature text claims 3000K warm white and 6000K cool white modes, but the specification lists only 3000 Kelvin. Check the selected listing if the cool-white mode is essential.

What posts are these lights intended to fit?

The listing claims compatibility with standard 4x4 wood posts with a 3.5-inch inner dimension and modern vinyl posts. Verify your post dimensions before ordering.

Do they require wiring?

The product is listed as solar powered, and the feature text says no wiring is needed. The listing claims charging in 6–8 hours of daylight and automatic lighting at night.