Ring says its 4W Solar Panel (2nd Generation) can keep a compatible battery camera charged with at least 2–3 hours of direct sunlight a day, while Blink says as little as 45 minutes of direct sun keeps its Solaris solar battery running, according to the two companies’ product and support pages. Those numbers make picking a panel simpler than it looks: the right choice depends mostly on which camera you own, which plug it uses and how much sun the mounting spot actually gets. This guide matches each current Ring and Blink panel to the cameras it supports, then shows how to size and aim it.
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All specs below come from Ring’s product pages and support articles and from Blink’s support site, checked Oct. 17, 2026. Prices are what Ring and Amazon listed that day and will change.
Quick Picks by Camera
| Your camera | Best-matched panel | Rated output | Sun Ring/Blink recommends |
|---|---|---|---|
| Ring Outdoor Cam Plus, Stick Up Cam Pro, Spotlight Cam Plus/Pro (USB-C) | Ring Solar Panel (USB-C), 2nd Gen | 4W, 5V DC | 2–3 hours direct sun a day |
| Ring Outdoor Cam 2K, Outdoor Cam 4K Plus, Spotlight Cam 2K/4K Plus | Ring Solar Panel 6W | 6W | About 3 hours direct sun a day |
| Small spaces or bright, unshaded walls (USB-C Ring cams) | Ring Small Solar Panel (USB-C) | 1.9W, 5V DC | 3–4 hours direct sun a day |
| Older barrel-plug Ring cams (Stick Up Cam Battery 2nd/3rd Gen, Spotlight Cam Battery) | Ring Solar Panel (USB-C) with included barrel adapter | 4W | 2–3 hours |
| Blink Outdoor 4 or Outdoor 2K+ | Blink Solaris (sold with Outdoor 2K+ as “Solaris 2K+”) | Panel plus built-in battery | At least 45 minutes direct sun a day |
| Blink Outdoor (3rd Gen) only | Blink Solar Panel Mount | 0.8W, 5V 0.5A | Direct sun; check Blink’s FAQ |
Ring Solar Panels, Compared
Ring currently sells three camera panels, plus a separate line for battery doorbells. Here’s how the camera panels line up on Ring’s own spec sheets.
| Spec | Small Solar Panel (USB-C) | Solar Panel (USB-C), 2nd Gen | Solar Panel 6W |
|---|---|---|---|
| Rated output | 1.9W, 5V DC | 4W, 5V DC | 6W |
| Panel size | 6.9 × 4.4 × 0.5 in | 8.1 × 6.7 × 0.5 in | 20.81 × 25.7 × 0.7 cm (about 8.2 × 10.1 in) |
| Cable | 6.5 ft USB-C | 6.5 ft USB-C | 6.5 ft USB-C with cable management |
| Barrel-plug adapter | Included | Included | Not listed |
| Direct sun Ring recommends | 3–4 hours/day | 2–3 hours/day | About 3 hours/day |
| Operating temperature | -5°F to 120°F | -5°F to 120°F | -20°C to 50°C (-4°F to 122°F) |
| Price (Oct. 17, 2026) | $39.99 (Ring) | $59.99 (Ring) | $79.99 (Amazon listing) |
| Warranty | 1-year limited | 1-year limited | See listing |
For most Ring owners with a USB-C camera, the Ring Solar Panel (2nd Generation, 4W) is the safe default. It needs the least daily sun of the three by Ring’s own guidance, it ships with the USB-C to barrel-plug adapter for older cameras, and it’s compatible with Ring’s Gutter Mount, Pole Mount and Wall Mount for Solar Panels and Cams. The Ring Small Solar Panel (1.9W) is the pick when the camera sits on a sunny wall and you want the panel to disappear, since it’s about two-thirds the size.
The 6W panel is built for Ring’s newer, higher-resolution battery cameras. Ring’s compatibility list pairs it with the Outdoor Cam Plus, Spotlight Cam Plus, Outdoor Cam 2K, Spotlight Cam 2K, Outdoor Cam 4K Plus and Spotlight Cam 4K Plus. Amazon’s listing describes a 360° adjustable bracket and says Ring’s charging electronics are 20–30% more efficient than traditional controllers.
The 80% Rule on Ring Cameras
One detail surprises new owners: Ring says that even with maximum sunlight, a solar-charged camera’s battery level won’t go above roughly 80%. That’s intentional, to extend battery life. So if the app shows 78–80% on a sunny afternoon, the panel is doing its job.
Blink Solar Options
Blink’s lineup is simpler, but compatibility is stricter.
| Spec | Blink Solaris | Blink Solar Panel Mount |
|---|---|---|
| Compatible cameras | Outdoor 4 and Outdoor 2K+ | Outdoor (3rd Gen) only |
| Design | Panel and rechargeable battery in one unit that clicks onto the camera | Mount with panel and internal battery |
| Rated panel output | Not published on Blink’s FAQ | 0.8W; 5V DC, 0.5A output |
| Battery | Built in; Blink says up to one month of power with no charging | 3.7V 18650, 3,200mAh (11.84Wh) |
| Direct sun Blink recommends | At least 45 minutes/day | Direct sun |
| Weather rating | IP65 when attached to the camera | Weather resistant; -4°F to 113°F |
| Mounting height | Up to 10 ft recommended | Camera tilt ±25°, panel tilt ±10° |
Blink sells Solaris as the Blink Solaris 2K+, which pairs it with an Outdoor 2K+ camera and mount ($109.99 on Amazon on Oct. 17, 2026). It still needs a Sync Module. Blink says Solaris ships with about 20–30% charge, so set it in direct sun for at least 45 minutes before setup. The battery level shows in the Blink app in 5% steps.
The older Solar Panel Mount uses a Micro-USB connection and works only with the Outdoor (3rd Gen). Blink says it isn’t compatible with the Outdoor 4, XT or XT2. If you own an Outdoor 4, Solaris is the official solar route.
How Much Energy a Small Panel Really Delivers
Camera panels are tiny compared with RV or roof panels, so it helps to put the ratings in watt-hours. These are rough estimates, not measurements. Small panels rarely hit their full rating because of angle, heat and conversion losses, so we’ve applied a 50% real-world factor.
| Panel | Rated watts | Direct sun hours | Rated Wh/day (watts × hours) | Rough real-world Wh/day (estimate, 50%) |
|---|---|---|---|---|
| Blink Solar Panel Mount | 0.8W | 4 | 3.2Wh | ~1.6Wh |
| Ring Small Solar Panel | 1.9W | 3.5 | 6.7Wh | ~3.3Wh |
| Ring Solar Panel 2nd Gen | 4W | 2.5 | 10Wh | ~5Wh |
| Ring Solar Panel 6W | 6W | 3 | 18Wh | ~9Wh |
Worked example: Blink’s Solar Panel Mount battery holds 11.84Wh. If the panel nets about 1.6Wh on a sunny day, it would take roughly seven sunny days to refill that battery from empty with no camera load. That’s why these systems are designed to keep a battery topped up, not to recover a dead one fast. If a battery is near empty, charge it indoors first, then let solar maintain it.
Second example: A busy driveway camera might record dozens of motion clips a day. Moving from a 1.9W panel at 3.5 sun hours (about 6.7Wh rated) to the 4W panel at the same 3.5 hours (14Wh rated) roughly doubles the energy available. That extra margin is what carries a camera through a run of cloudy days.
Installation: Getting the Most Sun
- Check the sun first. Watch the spot for a full day, or use a sun-path app. Ring’s numbers assume direct sun on the panel, not bright shade.
- Face it toward the equator. Ring recommends facing south in the Northern Hemisphere and north in the Southern Hemisphere.
- Tilt about 45°. Ring suggests using the adjustable arm to angle the panel about 45 degrees toward the sky. In winter, when the sun is lower, a steeper angle helps.
- Avoid shadows. Eaves, trees and bushes are the most common culprits. Even a partial shadow cuts output on a small panel.
- Use the cable length. Ring’s 6.5 ft USB-C cable lets you place the panel in a sunnier spot than the camera, like a gutter or the top of a fence post.
- Pick the right mount. Ring’s Gutter Mount ($24.99), Pole and Wall Mount ($29.99) and Stake Mount ($39.99) were listed on its site on Oct. 17, 2026. The Pole and Wall Mount holds a camera and panel together without drilling a second set of holes.
- Tidy the cable. Ring’s base includes arms to wrap extra cable, and its panels come with cable clips.
Our guide to solar panel tilt brackets and install angles explains the angle math for larger panels; the same principles apply here at a smaller scale.
Winter and Cloudy Weather
Ring says cloudy, rainy and snowy weather reduce the charge, and cold temperatures can drain a lithium-ion battery faster. During long gray stretches, you may need to recharge the battery by hand more often, then let the panel take over again when the sun returns. A few habits help:
- Brush snow and leaves off the panel. Blink specifically recommends clearing debris, leaves or snow from Solaris.
- Steepen the tilt in winter, both for the low sun and so snow slides off.
- Trim motion zones and sensitivity so the camera records fewer unneeded clips.
- If you’re between two panel sizes, choose the larger one for a north-facing yard or a cloudy climate.
Third-Party Panels
Amazon lists plenty of third-party panels sold as “compatible with Ring” or “for Blink,” often with higher wattage. Ring states that its barrel-plug Solar Panel and Super Solar Panel are configured specifically for Stick Up Cam and Spotlight Cam, and that its USB-C to barrel adapter is meant only for Ring USB-C panels and Ring barrel-plug cameras. The simplest path is a first-party panel from the camera maker’s compatibility list. If you go third-party, confirm the exact connector and your camera’s generation.
Ring Doorbells Use Different Panels
Ring makes separate panels for its battery doorbells. The current Solar Panel for Battery Doorbells uses a fork connector and USB-C and lists the Battery Doorbell 2K, 2K Plus and 2K Pro as compatible. Ring says its camera panels with barrel connectors aren’t meant for doorbells, so match the panel to the device type.
Who Should Buy Which
- Ring USB-C camera with average sun: Solar Panel (USB-C), 2nd Gen, 4W.
- Ring 2K or 4K Plus camera, or a busy recording spot: Solar Panel 6W.
- Bright south wall and you want it discreet: Small Solar Panel, 1.9W.
- Blink Outdoor 4 or 2K+: Blink Solaris.
- Blink Outdoor (3rd Gen): Blink Solar Panel Mount.
For bigger solar projects around the house, see our solar panel specs explainer and our guide to portable solar panels for camping.
FAQ
How many hours of sun does a Ring solar panel need?
Ring recommends at least 2–3 hours of direct sun a day for the 4W Solar Panel (USB-C) and 3–4 hours for the 1.9W Small Solar Panel. For the 6W panel, Amazon’s listing says about three hours.
Does the Blink Solar Panel Mount work with the Outdoor 4?
No. Blink says it works only with the Blink Outdoor (3rd Gen). For the Outdoor 4 and Outdoor 2K+, Blink offers Solaris.
How much sun does Blink Solaris need?
Blink says at least 45 minutes of direct sunlight a day, and its built-in battery can supply up to a month of power without charging.
Why does my Ring camera stop charging at 80%?
Ring caps solar charging at around 80% to extend the battery’s lifetime, even in full sun.
Can I use a Ring USB-C panel on an older barrel-plug camera?
Yes, for supported models. The Small and 2nd Gen USB-C panels include an adapter for barrel-plug cameras like the Stick Up Cam Battery (2nd and 3rd Gen) and Spotlight Cam Battery. Ring says they’re not compatible with the 1st Gen Stick Up Cam.
Which way should a camera solar panel face?
South in the Northern Hemisphere, north in the Southern Hemisphere, tilted about 45° toward the sky, according to Ring.
Bottom Line
Start with your camera’s model and connector, then choose the panel the maker lists for it. For most Ring USB-C cameras, that’s the 4W Solar Panel (2nd Gen). Newer 2K and 4K Plus models pair best with the 6W panel. For Blink Outdoor 4 and 2K+ owners, it’s Solaris. Mount it facing the sun at about 45°, keep shadows off it, and let it keep the battery topped up.