Siedinlar
SD718B
SD718B
4x4 Solar Post Light
50 Lumens 2 Modes, Post Caps Light Outdoor Waterproof for 4x4 Wooden Vinyl Posts, Deck Fence Garden Patio Decor, Warm/White Lighting (Black)
4.79 / 5.0
(129) 129 total reviews
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About this item
About this item
About this item
- [Solar Powered] Our Siedinlar 4x4 deck post lights are crafted from durable ABS+PC materials, not only illuminating the fixture itself but also employing LED technology with a convex lens to enhance brightness on all sides. With a 50-lumen output, this projects light onto the posts, turning them into a standout feature of your landscape.
- [2 Modes] Our 4x4 post cap lights offer two color settings—cool white and warm white—allowing you to effortlessly create the perfect outdoor ambiance or illumination for various areas such as fences, deck railings, stairs, paths, patios, and gardens. These post lights enhance any outdoor setting with just the right light. Fully charged, they can provide up to 48 hours of continuous illumination.
- [Easy Installation] These 4x4 fence post lights are easily mounted on 4x4 vinyl, metal, and 4x4 wooden posts, ideal for enhancing the aesthetics and functionality of mailboxes, fences, patios, and porches.
- [Weather Resistance] Our 4x4 solar post cap lights withstand wind, rain, snow, and high temperatures, operating in all harsh weather conditions without needing electrical wiring—completely wireless.
- [Note] Suitable for nominal 4 x 4 wood posts (actual 3.5" x 3.5") and 4 x 4 vinyl posts. Not compatible with 4.5 x 4.5 and 5 x 5 posts. Should you have any questions or need further assistance, our customer support team is always ready to help.
Product details
- Product Dimensions : 6.13 x 6.13 x 2.7 inches; 11.99 ounces
- Item model number : SD718B-1PK
- Batteries : 1 Lithium Ion batteries required. (included)
- Date First Available : April 12, 2025
- Manufacturer : Siedinlar
- ASIN : B0DWXBSNL3
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SIENDiNLAR 4x4 Solar Post Lights 50 Lumens 2 Modes
Our Siedinlar 4x4 deck post lights are crafted from durable ABS+PC materials, not only illuminating the fixture itself but also employing LED technology with a convex lens to enhance brightness on all sides

Fits Square:
- 4x4 Vinyl/Plastic Posts (actual 4.05" x 4.05")
- 4x4 Wooden Posts(3-1/2" x 3-1/2")
Note: This product is not compatible with 4.5 x 4.5 in and 5 x 5 in posts.



For 4x4 Vinyl Posts (actual 4.05" x 4.05")
- Warm White (2700 Kelvin-3000 Kelvin)
- Made of Acrylonitrile Butadiene Styrene + Polycarbonate.
- Remove the adapter lining
- Up to 48 hours of working time on a full charge
- Very suitable for posts, fences, railings, mailboxes, pillars, docks, decks, etc.

For 4x4 Wooden Posts (actual 3.5" x 3.5")
- Cool White (6000 Kelvin-6300 Kelvin)
- Built-in 3.7V 1200mAh lithium-ion battery
- Long-lasting lights, you get 100,000 hours’ lighting out of them
- Monocrystalline silicon improves charging efficiency
- 50 lumens output



Installation Guide

I have a very long driveway with split rail along the side. I have all different styles of solar lights on them as those babies can be very expensive and to me, it looks eclectic! Well, these are up there for being the brightest and last the longest. It can be a relatively cloudy day and they still light up. Not for as long as on a sunny day but they light up. They do fit on split rail posts but it does take some maneuvering and time. Don't get in a hurry. Get the screws in where they will actually hold on. I'm sure with a regular post, they would stay on without the wind blowing them down.
The lights are well worth the price and I might get another set to go with my collection, lol. REally, don't hesitate, they're great
We have been going through a house remodel so when the time came to focus on the outside, we really wanted some nice lamps that were both stylish and bright. The SIEDiNLAR Light Posts have turned out to be a really good option. Setup is as easy as "setup and go." We placed them along our front flower bed and they look great. I think they are bright enough but for some, they may want them a little brighter. I plan on buying another pack of these. I high recommend them.
These are nice lights. They’re not real bright, but they’re bright enough. I like them a lot. Add some class to my deck. Fit my 4 x 4 post perfectly and they were very easy to install.
I got the SIEDiNLAR 4x4 Solar Post Lights because I wanted a quick way to light up my deck at night without any wiring… I’m not sure of the technical specs but after a day in the sun they glow softly all evening.
They slip onto my wooden posts and secure with a couple of small screws… took me just a few minutes to install. The glow is gentle enough to outline the railings without feeling like a spotlight… perfect for late-night chats on the porch.
They’ve handled rain and morning dew without a problem… no water has crept in or dulled the paint. My only gripe is that one corner of my deck is shaded most of the day… the light there comes on dimly or not at all.
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⭐⭐⭐⭐⭐ – 5 Stars – Nailed it… exactly as advertised or even better
⭐⭐⭐⭐ – 4 Stars – Solid… but something’s off, mis-represented, or overpriced
⭐⭐⭐ – 3 Stars – Meh… not terrible, but not worth the money or time
⭐⭐ – 2 Stars – Yikes… functional but major issues, buyer beware
⭐ – 1 Star – Absolute trash… should not exist
Nice pack of post lights and easy to use and put together. They are plastic, so won't last forever, but as long as you do not hit them with something heavy they should last awhile.
They look nice and are decently bright. I do with they had more detail in the instructions on the light itself for which way to switch the control for each light frequency, since I had to get each light on to get settings uniform. That was easy enough though.