Quick answer: Solar post cap lights sit on top of your fence or deck posts, charge through the day, and switch on automatically at dusk. We carry two sets: the Dual Mode caps (warm/cool toggle, packs of 6–16, from $59.99) and the Waterproof LED caps (six colors, packs of 2–20, from $39.99). To size a pack, count the posts you want lit.
A fence at night is usually just a dark line you trust is still there. Post cap lights change that: each cap charges by day and outlines your fence or deck from dusk onward — no trenching, no wiring, no outlet. Together, our two post cap sets have sold 148 units since mid-January 2026, quietly becoming one of our biggest categories.
First, an honest framing: these are outline lights
Before comparing models, here's what post cap lights are for. The Dual Mode listing puts it plainly: functional lighting for pathway clarity and landscape framing — not to spotlight or flood large areas. Caps mark the fence line, the deck edge, the gate. For a bright wash over a driveway, use a motion floodlight instead.
Option one: Dual Mode Solar Post Cap Lights
The Dual Mode set (75 sold since mid-January) is the premium pick: a toggle under each cap switches between a warm, soft-amber tone and a cooler white one, stored until you change it manually — warm for a wood deck, cool for a driveway. Housings come in White, Black, or Brown; packs run 6, 8, 12, or 16; caps rest on standard posts with internal pressure clips, no tools needed. A 6-pack is $59.99, the 16-pack $139.99.
Option two: Waterproof LED Solar Post Cap Lights
The Waterproof LED set (73 sold) trades the toggle for range: six colors — Black, Blue, Brown, Green, Purple, White — in packs from 2 to 20. It's designed for wood or vinyl posts, mounts on top with its included base, and throws light downward around the post instead of scattering it upward. A 2-pack starts at $39.99, the 20-pack is $169.99 — an easy set to start small: light the gate posts first, then extend.
The fence math: how many caps do you need?
Simple rule: count your posts. Walk the run you want lit and count every post top, including corners and both sides of any gate. Most residential fences place posts every 6 to 8 feet, so a straight 48-foot run with posts every 8 feet has 7 posts, ends included. Then decide on density:
- Every post — a continuous, even outline. The classic look, and the reason 12- and 16-packs exist.
- Every other post — a subtler rhythm that halves the cost. Works well on long runs.
- Key posts only — corners, gate posts, and stair posts. A 2- or 4-pack of the Waterproof set covers this.
Count first, then round up to the nearest pack — a spare cap is more useful than a dark post at the end of the run.
Side by side
| Dual Mode set | Waterproof LED set | |
|---|---|---|
| Light tone | Warm or cool, switchable per cap | No mode toggle listed |
| Color options | White, Black, Brown | Black, Blue, Brown, Green, Purple, White |
| Pack sizes | 6, 8, 12, 16 | 2, 4, 8, 12, 16, 20 |
| Price range | $59.99–$139.99 | $39.99–$169.99 |
| Sold since mid-Jan 2026 | 75 | 73 |
One pricing note: on the Waterproof set, mid-size packs are priced per color (8-pack $89.99, 12-pack $129.99 across colors, but 4- and 16-pack pricing varies by color) — check the exact combination on the product page. On the Dual Mode side, the Brown 12-pack runs $109.99 versus $99.99 for White and Black.
Which one for your fence?
Pick Dual Mode if you care about light temperature — the only way to A/B warm against cool on your fence — or want a conventional look. Pick Waterproof LED to start with just two or four caps, need a 20-pack, or want a color beyond the neutrals. Plenty split the difference: neutral caps up front, something bolder out back.
Installation and upkeep
Both sets install without an electrician: Dual Mode caps press on and grip with internal clips; Waterproof caps lock onto their top-mount base with simple tools. After that, maintenance is mostly panel hygiene — wipe the solar panel and lens with a soft dry cloth, skip harsh chemicals and pressure washers, and check the mounting now and then, as the Waterproof listing suggests. If cloudy days leave the caps dimming earlier, that's normal solar behavior, not a fault.
Frequently asked questions
How many post cap lights do I need?
Count the posts along the run you want lit - most people cap every post for a continuous outline, or every other post for a subtler look. Include gate and corner posts first, then round up to the nearest pack size.
Will post cap lights light up my whole yard?
No. They are perimeter and guidance lights - the Dual Mode listing describes the output as framing and orientation lighting rather than spotlighting. For bright, wide coverage over a driveway, use a motion floodlight instead.
Do they fit every fence post?
Both sets are made for standard outdoor posts, and the Waterproof LED set is aimed at wood or vinyl posts. Measure your post tops and compare against the sizing on each product page before ordering.
Do the lights stay on all night?
They switch on at dusk and run on stored solar power. The Dual Mode listing notes output stays steady through dusk and early evening, then gradually dims as the charge runs down - expect a shorter glow after cloudy days.
How long does delivery take?
Standard delivery typically takes about 7-10 business days after processing. Full details are on our shipping policy page.
More from the Solar Wind LED Chime blog
- Dual Mode post cap lights — the warm/cool toggle, up close
- Waterproof LED post caps — six colors, packs of 2 to 20
- Our best-selling solar lights and wind chimes of 2026
- Shop the post cap collection
Prices and specifications are current as of publication and may change — see each product page for the latest details. Sales figures cover orders from January 16 to July 16, 2026.