JA Solar505W Mono PERC

Product Features:

• Higher output power (505W).
• Lower levelized cost of energy (LCOE).
• Better shading tolerance.
• Enhanced tolerance for mechanical loading.
• 15-year product warranty and 25-year linear power output warranty.

Comes supplied with staubli MC4 connectors.

Due to size of the panels and size of the gap between the slats of the pallets (both length and width entries) a fork lift truck on site is required to offload these modules. In Germany, this module may only be installed on building-independent solar systems in publicly inaccessible areas with a height of up to 3m.

JA Solar 505W Mono PERC Half-Cell MBB Traceable Silver Frame MC4 Connectors Part No: JAM66S-30-505-MR-TS-MC4 Panels – Monocrystalline

The JA Solar 505W Mono PERC Half-Cell panel utilises monocrystalline PERC (Passivated Emitter and Rear Cell) technology combined with a half-cell design and multi-busbar (MBB) architecture. This configuration splits each silicon cell into two halves, reducing electrical resistance and improving current flow. This results in higher energy output, better performance in partial shading, and lower risk of hot-spots, compared with traditional full-cell panels.

Rated at 505 W, this panel achieves a module efficiency of around 21.3 %, making it suitable for installations where space is at a premium but high power generation is needed. The electrical characteristics include a maximum power point voltage (Vmp) of around 38.53 V, current at maximum power (Imp) of about 13.11 A, and an open-circuit voltage (Voc) of approximately 45.72 V. These specifications help ensure compatibility with many modern inverters and system designs.

Mechanically, the panel measures roughly 2093 mm × 1134 mm × 30 mm and weighs about 26 kg, making it relatively manageable while still delivering a high wattage output. It features a silver anodised aluminium frame with robust construction capable of withstanding high mechanical loads — with a maximum front load rating of up to 5400 Pa — which is beneficial in windy or snow-prone environments. The module also comes with IP67/IP68-rated junction boxes and MC4-EVO2 connectors for secure, weather-resistant electrical connections.

One of the key merits of this JA Solar panel is its improved performance in real-world conditions. The half-cell design helps reduce resistive losses, while the PERC technology improves light capture and reduces degradation over time. These traits make the panel a solid choice for rooftop residential systems as well as larger commercial or industrial arrays where reliability and efficiency are key metrics.

In terms of warranties, typical offerings include a 12-year product warranty and a 25-year linear power output warranty, underlining the manufacturer’s confidence in long-term performance and durability. These warranties are crucial when assessing the lifetime energy yield and return on investment of a solar installation.

Overall, the JA Solar 505W Mono PERC Half-Cell MBB panel is a compelling option in the high-wattage segment of today’s PV market, balancing strong electrical performance with robust build quality and modern cell technology — making it suitable for a wide range of solar energy applications.