Renogy 100W 12V Flexible Solar Panel: features, specs and who it suits

The Renogy Flexible Solar Panel is a 100-watt, 12-volt monocrystalline panel that bends slightly instead of staying rigid. That makes it a fit for places where a standard glass-and-aluminium panel is awkward to mount, such as the curved roof of a camper trailer, a boat deck or a van. This page explains the specs and what to think about when planning a small off-grid system.

What "flexible" means here

Renogy says the panel uses advanced polymer materials in place of the glass and thick frame of a conventional panel. The result is a panel it rates at about 70% lighter than conventional panels and roughly 95% thinner, at about a tenth of an inch (0.1 in, or 2.5 mm) when laid flat. The listing gives its weight as 4.0 lb (about 1.8 kg).

Flexible panels typically bend only gently. They are meant to follow a mild curve, not to be folded or rolled, and manufacturers usually specify a maximum bend. Check the manual for Renogy's limits.

Size and output

The panel measures 48.0 x 21.5 inches (about 122 x 55 cm). At 100 watts and 12 volts, it is sized for charging 12-volt battery systems. In general, a 100-watt panel produces its rated output only in strong direct sun with ideal conditions; real daily output is lower and depends on the angle, shade, temperature and season.

As a rough guide, a single 100-watt panel is a modest source: enough to keep a battery topped up and run small loads such as lights, a fan or device charging, rather than heavy appliances.

Mounting on uneven surfaces

Renogy lists marine, rooftop, RV, boat and other curved surfaces as typical uses. The slim profile also makes it less noticeable from the ground, which Renogy describes as suited to a low-key setup. Flexible panels are commonly attached with adhesive or fasteners, depending on the surface. Follow Renogy's instructions on mounting method and on leaving space beneath for airflow, since a panel that gets very hot typically produces less.

Durability figures

Renogy says the panel was designed to withstand wind loads up to 2400 Pa and snow loads up to 5400 Pa. Those are test-load figures for pressure on the panel surface; they don't describe every real-world condition, such as a branch strike or a car-wash brush. Treat them as a sign of intended robustness and follow the manual.

What you need besides the panel

A solar panel alone doesn't charge a battery safely. A system typically also needs:

• A charge controller matched to the panel's voltage and current, which regulates charging.
• A battery of suitable chemistry for that controller.
• Cables and connectors of the right gauge, plus fusing as the manual advises.

The listing describes only the panel, so confirm what is in the box.

Who it suits

It suits people who want solar on a curved or weight-sensitive surface: RV and van owners, boat owners and cabin users. It is less of a match for those who need high output from a small area or a panel that can be angled toward the sun, where rigid panels on tilt mounts are the more usual choice.

What to check before you buy

• Roof space: measure the area for a 48 x 21.5 inch panel plus cable routing.
• Curve: confirm your surface's curve falls within the panel's stated limits.
• System voltage: make sure your battery and controller are 12 volt compatible.
• Power needs: add up your daily use in watt-hours to see whether 100 watts is enough.
• Mounting: decide how you will attach it, and check the manual before drilling or bonding.
• Wiring: follow local codes and the manual for connections and fusing.

The short version

• 100-watt, 12-volt monocrystalline semi-flexible solar panel from Renogy.
• 48.0 x 21.5 x 0.1 inches and 4.0 lb.
• Renogy lists wind up to 2400 Pa and snow up to 5400 Pa.
• Meant for RVs, boats, vans and other curved surfaces.
• Needs a compatible charge controller and battery to form a working system.

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