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The JA Solar JAM54D41 LB is an n-type double-glass bifacial solar panel from the DeepBlue 4.0 Pro line, rated 440–460W in an all-black finish. It uses Bycium+ half-cut cells with 16 busbars and reaches about 22.5% module efficiency, with a −0.29%/°C temperature coefficient and low LID. The double-glass build handles 5400 Pa front and 2400 Pa rear load, and JA Solar backs it with a 25-year product and 30-year linear power warranty. It suits homeowners and installers who want high output per square meter and rear-side gain, and it competes with other n-type bifacial modules on efficiency and warranty rather than on nameplate wattage alone.
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Ratings are strong at 4.5 out of 5 from 31 ratings, and buyers describe the panels as solid and well made. Feedback centers on output and build quality rather than on weak points.
The JA Solar JAM54D41 LB is an N-type, double-glass bifacial solar panel from the DeepBlue 4.0 Pro series. It has an all-black module design and is meant for residential rooftops, commercial buildings and other installations where appearance matters.
It uses n-type Bycium+ monocrystalline cells with 16-busbar (16BB) half-cell technology. Cell conversion efficiency is up to 26% and module efficiency is 22.5%. Because the panel is bifacial, it generates power from both the front and the rear side. It has very low LID, good low-irradiance performance and a temperature coefficient of −0.29%/°C.
The double-glass structure resists moisture, mechanical stress and harsh environmental conditions. The panel is certified for a 5400 Pa front load and a 2400 Pa rear load. It carries a 25-year product warranty and a 30-year linear power output warranty.
