Renogy CORE 12V 50W Monocrystalline Solar Panel

Short Product Summary

The Renogy CORE 12V 50W Monocrystalline Solar Panel is a compact rigid panel built for small 12V systems. Rated at 50W with an 18.6V maximum power point, it is a sensible trickle-charge or top-up panel for a caravan, off-road trailer, camper or boat battery, and a practical first step into solar for owners who do not have the roof space or the budget for a full array.

Why This Product

Not every caravan needs 400W on the roof. A lot of vans in the Western Cape sit for weeks between trips, and the battery slowly drains through the alarm, the gas detector, the radio memory and self-discharge. A 50W panel wired through a small charge controller keeps that battery topped up so it is ready when you are, instead of flat and sulphated by the time the December trip comes around. It is also the right size for a small pop-top, a bakkie canopy build or a roof already crowded with a hatch, aircon and an awning rail, where a 100W or 200W panel simply will not fit.

Because it is a rigid, framed, glass-fronted panel, it is designed to be bolted down permanently and left there. That is a different job to a folding suitcase panel you pack away after every trip, and it is the reason rigid panels stay the standard for roof-mounted caravan solar.

Key Features

• 50W monocrystalline output – enough to hold a 12V leisure battery topped up between trips, or to run modest loads such as LED lighting and a water pump on a small build.
• Compact 581 x 509 mm footprint – fits roof areas where a full-size panel cannot, and leaves space for hatches, vents and awning rails.
• Rigid anodised aluminium frame – corrosion resistant and built for permanent outdoor mounting on a caravan or trailer roof.
• Low-iron tempered glass front – anti-reflective and impact resistant, which matters on South African gravel roads.
• Bypass diodes fitted – limit the power drop caused by partial shading from an aircon unit, aerial or overhanging tree.
• IP65 junction box and IP67 solar connectors – sealed against dust and rain, so the wiring entry survives Cape winters and Karoo dust alike.
• 2400 Pa wind and 5400 Pa snow load rating – rated for the mechanical loading you will meet towing at highway speed.
• Pre-drilled mounting and grounding holes – works with standard Z-brackets, tilt mounts and pole mounts.

Ideal For

• Keeping a caravan or off-road trailer battery charged while the van is parked at home.
• Small pop-top campers and bakkie canopy builds with limited roof space.
• Boats, ski-boats and small fishing craft that need a maintenance charge.
• Gate motors, borehole controllers and other low-draw 12V farm equipment.
• First-time solar users who want to learn the system before committing to a bigger array.

Local Support from 4Matt Campers

4Matt Campers is a Renogy dealer based in Cape Town, serving caravanners and overlanders throughout the Western Cape and delivering across South Africa. We fit and troubleshoot 12V systems on caravans and off-road trailers every week, so if you are not sure whether 50W is the right size for what you are trying to do, phone us before you buy rather than after. You are also welcome to visit the showroom, see the panel in the flesh and talk through the controller, cable and mounting side of the job with someone who has done it before.

Technical Specifications

• Model: Renogy CORE 12V 50W Monocrystalline Solar Panel
• SKU: RNG-50D-SS-G3-SA
• Maximum power (STC): 50 W
• Optimum operating voltage (Vmp): 18.6 V
• Optimum operating current (Imp): 2.69 A
• Open-circuit voltage (Voc): 22.3 V
• Short-circuit current (Isc): 2.94 A
• Cell type: Monocrystalline silicon
• Maximum system voltage: 600 V DC
• Operating temperature: -40 °C to +90 °C
• Dimensions: 581 x 509 x 30 mm (22.9 x 20.0 x 1.18 in)
• Weight: 3.5 kg
• Frame: Corrosion-resistant aluminium alloy
• Junction box: IP65 rated
• Connectors: IP67 rated MC4-compatible solar connectors
• Panel leads: 14 AWG pair, approx. 0.4 m
• Wind load: 2400 Pa
• Snow load: 5400 Pa

What's Included

• 1 x Renogy 50W 12V monocrystalline rigid solar panel with pre-fitted MC4-compatible leads

Mounting brackets, cable, fuses, glands and a charge controller are not included and are ordered to suit your install.

Optional Fitment & Upgrade Notes

• A charge controller is not optional. A solar panel must never be wired straight to a battery. This panel needs a PWM or MPPT charge controller between it and the battery bank to regulate charging and protect the battery.
• Controller sizing: at roughly 2.9 A short-circuit current, a small 10 A controller is comfortably sufficient for this panel on its own, with headroom if you add a second panel later.
• Mounting: Z-brackets are the usual choice for a flat caravan roof. Tilt mounts help in winter when the sun sits low, but on a caravan roof most owners fix flat and accept the small loss for the sake of towing safely.
• Wiring more panels: wiring panels in series raises voltage and suits MPPT controllers; wiring in parallel keeps voltage low and suits PWM. Mixing panels of different wattage or age in one string is best avoided.
• Cable and sealing: use correctly sized twin solar cable, an in-line fuse at the battery end, and a proper sealed roof gland. Sikaflex-sealed brackets are standard practice on a caravan roof.

Complete Your Setup

Pair this panel with a regulator from our solar charge controllers, store the energy in one of our lithium batteries, and run 230V appliances through an inverter or inverter-charger. Cable, fuses, glands and connectors are in electrical accessories, and you can see the full range in our Renogy collection.

FAQ

How much will a 50W panel actually put into my battery in a day?
In good South African summer sun you can expect roughly 200-250 Wh a day, which is about 15-20 Ah at 12V. That is a maintenance and top-up figure, not enough to run a fridge continuously. In midwinter Cape weather, expect considerably less.

Can I connect it straight to my battery?
No. The open-circuit voltage is 22.3V, which is well above what a 12V battery will tolerate. You must fit a PWM or MPPT charge controller between the panel and the battery.

PWM or MPPT for a panel this size?
A basic PWM controller is perfectly adequate for a single 50W panel and keeps the cost sensible. If you plan to expand the array later, or wire panels in series, start with an MPPT controller instead.

Will it survive being towed on gravel?
Rigid panels are designed for permanent vehicle mounting and this one carries a 2400 Pa wind load rating with tempered glass. The weak point on gravel is almost always the mounting method, not the panel, so use proper brackets, correct fasteners and seal them well.

Can I add a second panel later?
Yes, provided your controller has the capacity. The cleanest approach is to add an identical panel and wire the pair to match your controller type. If you already know you want more power, it is usually cheaper to fit one 100W or 200W panel from the start than to chain small panels together.