Key Product Features

• Model: JA Solar JAM66D45-615/LB (or equivalent N-Type bifacial series)
• Rated Power (Pmax): 615 Wp
• Module Efficiency: Approx. 22.8%
• Cell Technology: N-Type TOPCon / Bycium+ Monocrystalline
• Number of Cells: 132 (half-cut)
• Bifacial: Yes (dual-glass design, bifaciality ~80% ±5%)
• Dimensions: Approx. 2382 × 1134 × 30 mm
• Weight: Approx. 33.1 kg
• Temperature Coefficient (Pmax): Approx. –0.29%/°C
• Max System Voltage: 1500 V DC
• Mechanical Load: 5400 Pa (front) / 2400 Pa (rear)
• Front / Back Glass: 2.0 mm tempered dual glass
• Frame: Anodized aluminium alloy
• Junction Box: IP68
• Warranty: 12 years product + 30 years linear performance warranty
• Power Tolerance: 0 ~ +3%

Frequently Asked Questions (Q&A)

Q1: What does “N-Type Bifacial” mean? A: N-Type cells offer higher efficiency and lower long-term degradation than traditional P-Type cells. Bifacial means the panel produces power from both the front and rear sides when light is reflected from the ground or roof surface.

Q2: How much extra energy can the bifacial design produce? A: Depending on the surface under the panels (white roof, concrete, sand, light-coloured ground, etc.), rear-side gain can typically add 5–25% more energy over the system lifetime.

Q3: Is this panel suitable for hot Kenyan climates? A: Yes. The low temperature coefficient and dual-glass construction help it maintain strong performance in high temperatures common across Kenya.

Q4: Can it be used on residential roofs? A: Yes. It is suitable for both residential and commercial rooftops, as well as ground-mount and carport installations.

Q5: What is the expected lifespan? A: JA Solar provides a 30-year linear performance warranty. With proper installation, these panels are designed to produce useful power well beyond 30 years.

Q6: Do you deliver and install in coastal towns? A: Yes. Coastalsolarafrica serves Mombasa, Malindi, Kilifi, Diani, Watamu, Mtwapa, Lamu, Kwale and other coastal areas, plus Nairobi and nationwide delivery.

Q7: Are these panels compatible with Deye hybrid inverters? A: Yes. They work excellently with Deye and most other hybrid or on-grid inverters. We can design a complete matched system for you.

Q8: How many panels do I need? A: It depends on your energy needs and available space. The high 615 W output means you typically need fewer panels compared to older lower-wattage modules.

Q9: Is professional installation recommended? A: Yes. Correct mounting, orientation, tilt and electrical design are important to maximise bifacial gain and ensure long-term safety and performance.

Q10: How can I get a quote or system design? A: Call or WhatsApp +254 716 842 775. Share your location (especially if coastal), available roof or ground space, and approximate daily energy use, and we will design a suitable system using these high-performance JA Solar panels.