The Ronma SKYMAX 620W Bifacial Solar Panel is a high-efficiency N-TOPCon monocrystalline module designed for commercial, industrial, and large-scale solar installations. Its bifacial structure generates power from both the front and rear sides, helping increase total energy production when installed over reflective surfaces.
The panel features 132 N-TOPCon mono cells, a module efficiency of 23.00%, and a positive power tolerance of 0 to +3%. Advanced multi-busbar technology improves electrical performance and reduces internal resistance, while non-destructive cell cutting helps enhance mechanical reliability.
Built for demanding environments, the module includes an IP68-rated junction box, anodized aluminium alloy frame, 2.0 mm glass, and resistance to PID, salt mist, and ammonia exposure. Its low-light performance and low temperature coefficient support dependable energy generation throughout varying weather conditions.
Ronma provides a 15-year product warranty and a 30-year linear power warranty, with annual degradation stated at approximately 0.40% over 30 years.
| Model Range |
RM-620-650W-182R/132TB |
| Rated Maximum Power (Pmax) |
620W |
| Solar Cell Technology |
N-TOPCon Monocrystalline |
| Number of Cells |
132 Cells |
| Open-Circuit Voltage (Voc) |
49.60V |
| Short-Circuit Current (Isc) |
15.91A |
| Maximum Power Voltage (Vmp) |
41.40V |
| Maximum Power Current (Imp) |
14.99A |
| Maximum System Voltage |
1500V DC |
| Temperature Coefficient of Pmax |
-0.30%/°C |
| Temperature Coefficient of Voc |
-0.25%/°C |
| Temperature Coefficient of Isc |
+0.046%/°C |
| Operating Temperature Range |
-40°C to +85°C |
| Bifacial Factor |
Isc: 80% ±10%; Pmax: 80% ±10% |
| Module Dimensions |
2382 × 1134 × 30 mm |
| Frame Material |
Anodized Aluminium Alloy |
| Junction Box |
IP68, 1500V DC, 3 Diodes |
| Connector Type |
MC4 Compatible |
| Cable Length |
+300 mm / -200 mm, customizable |
| Product Warranty |
15 Years |
| Linear Power Warranty |
30 Years |
| Applications |
Commercial, industrial and centralized PV systems |
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