Solar Accessories

MC4 Connectors

MC4 connectors provide secure, weatherproof connections between solar panels and cables. They are the industry-standard connector for photovoltaic systems, ensuring stable power transfer with minimal loss. Our MC4 connectors are built for technical reliability and ease of use:

• Compatibility: Supports 4 mm² to 6 mm² solar cables (approx. 10–8 AWG) for versatile wiring needs.
• Weatherproof Design: Certified IP67 waterproof and UV-resistant housing for long-term outdoor and marine use.
• High Electrical Rating: Designed for up to 30A current and 1000V DC, suitable for most panel and battery setups.
• Easy Installation: Simple crimp-and-click assembly. The male/female pair locks together firmly to prevent accidental disconnection, yet can be unlocked with the proper tool for maintenance.
• Reliable Performance: Low contact resistance ensures minimal voltage drop, so your solar panels’ energy is transmitted efficiently. 

Note: We also offer MC4 branch connectors (Y-connectors) for parallel panel connections, enabling you to wire multiple panels together safely without improvised splices.

Solar Panel Extension Cables

High-quality solar panel extension cables are essential for extending the connection between your solar panels and the rest of your system (charge controller, inverter, etc.). 

Our cables use tinned copper conductors with robust insulation, specifically made for photovoltaic use:

• Durable Construction: UV-resistant, double-insulated solar cable that withstands sunlight, abrasion, and temperature fluctuations. Suitable for outdoor and marine solar accessories applications.
• Low Voltage Drop: Generous conductor size (typically 4 mm² cross-section) minimizes energy loss over distance, maintaining efficient power delivery from your panels.
• Pre-terminated Options: Available as extension leads with MC4 connectors (male/female) pre-crimped on each end for plug-and-play installation. No need to manually attach connectors – just plug into your existing panel leads.
• Various Lengths: Choose from practical lengths (1m, 3m, 5m, 10m, etc.) to suit your boat or off-grid setup. Proper length cables keep your installation neat and reduce excess slack.
• Marine-Grade Materials: Tinned copper wiring resists corrosion in humid or salty environments, providing reliable conductivity for years on the water.

Whether you’re wiring a small yacht solar array or an RV roof system, these extension cables make the job straightforward and safe, without the guesswork of cutting or crimping your own wires.

Connecting Solar Panels to MPPT and Battery – Reliable Cabling & Components

A solid connection between your solar panels, MPPT charge controller, and battery bank is essential to ensure system efficiency, safety, and long-term performance. At Baywatt, we offer the key components needed to build a complete 12V or 24V solar system without relying on complicated or overpriced equipment.

• Low-loss tinned copper cables: Designed for DC applications, these cables ensure minimal voltage drop between your solar panels and MPPT, even over extended runs.
• High-current DC power connectors: Easy to install and secure, these connectors simplify linking your MPPT output to your battery without soldering or guesswork.
• Coulometer: A practical tool to monitor your battery’s real-time charge level, consumption rate, and remaining capacity with precision.
• Battery splitter (VSR): Automatically manages dual battery banks (starter and service), directing charging intelligently without manual switches or diode isolators.
• Simple system integration: All components are plug-and-play or tool-friendly, making them ideal for marine solar setups, RVs, and off-grid installations.

These accessories help you complete your entire solar circuit—from panel to MPPT to battery—using reliable, accessible parts that are easy to work with and designed for demanding environments.

Solar Panel Wiring Tools (Crimping Tools)

Quality wiring are vital for any solar installation. Our crimping tools for solar panel wiring are purpose-built for assembling cables and connectors used in PV systems:

• MC4 Crimping Tool: Designed to crimp 2.5 mm²–6 mm² solar cable pins perfectly. Achieve firm, consistent crimps on MC4 connector contacts, which is critical for a low-resistance, reliable connection that won’t pull apart.
• Heavy-Duty Build: Made of hardened steel with precise jaws, our crimpers apply the correct pressure every time. This durability and accuracy is appreciated by installers who need to make dozens of terminations.
• Ergonomic & Safe: Comfortable handle grip and ratchet mechanism ensure the tool doesn’t release until the crimp is fully compressed, preventing loose connections. A proper crimp prevents overheating and electrical failure in high-current circuits.
• Multi-Function Tools: In addition to MC4-specific crimpers, we provide combination solar wiring tools (for cutting, stripping, and crimping various terminals). Having the right tool on hand simplifies installation and reduces the chance of mistakes.
• Marine Usage: These tools are suitable for on-board repairs and maintenance. Whether you’re adding a new panel or fixing a connection at sea, a reliable crimping tool helps you get the job done right the first time.

Investing in the correct solar panel wiring tools ensures your electrical connections are secure and long-lasting, which is crucial for the overall safety and efficiency of your solar power system.

Waterproof Cable Glands (IP-Rated)

Protecting cable entry points is crucial in any outdoor or marine installation. Cable glands (also known as power glands) provide a sealed passthrough for cables, preventing water and dust from entering enclosures or boat interiors:

• Watertight Seal: Our cable glands are IP66 to IP68 rated, meaning they prevent strong jets of water and even temporary submersion from causing leaks. This keeps your charge controller, junction box, or cabin dry and safe.
• Dual cable entries: We offer single and double cable entry glands. Dual-entry glands allow two cables (such as the positive and negative from a solar panel) to pass through a deck or wall with one fitting, maintaining a neat, waterproof seal around each cable.
• UV-Resistant Material: Constructed from marine-grade UV-stabilized ABS or polycarbonate, the glands won’t crack or degrade under prolonged sun exposure. They are built to last in harsh weather, salt spray, and temperature extremes.
• Easy Mounting: Low-profile designs that can be easily mounted on RV roofs, boat decks, or building surfaces using sealant and screws. Once installed, you simply insert your cable and tighten the gland’s cap, which compresses a rubber gasket snugly around the cable.
• Secure Cable Management: In addition to sealing, cable glands provide strain relief. Cables are firmly held in place, preventing movement or chafing at the entry point, which adds to the longevity and safety of your wiring. 

Using IP-rated cable glands is a straightforward but critical step to ensure your solar power system is waterproof and weatherproof. They give installers and boat owners confidence that no matter the conditions – rain, waves, or wind – the cable connections remain protected.

Baywatt – Trusted Source for Solar Accessories

Baywatt is a trusted supplier of high-quality solar accessories and marine electrical components. We pride ourselves on providing technically reliable, field-tested products that give you confidence in your solar installation. Every item in our catalog – connectors, cables, tools, and more – is selected for durability and performance in demanding environments. We back our products with knowledgeable customer support and fast shipping from our warehouse in France, so you can get your project done without hassle or delay.

By choosing Baywatt, you’re partnering with a team that understands marine and off-grid power systems inside out. Our goal is to supply you with robust, practical solar accessories that make your installation safer and your renewable power output more dependable. 

With Baywatt, you get the peace of mind that your solar setup is built on quality components from a reliable, specialist supplier.