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Brand range: 165W–635W
Monocrystalline
JA Solar JAM78S10-440/MR
Max Power
440W
Efficiency
20.85%
Operating V
44.9V
Warranty
25Y
Technical Specifications
| Open Circuit Voltage (Voc) | 53V |
| Short Circuit Current (Isc) | 10.44A |
| Voltage at Pmax (Vmp) | 44.9V |
| Current at Pmax (Imp) | 9.81A |
| Temp. Coefficient of Pmax | -0.333%/°C |
| Dimensions | 1866 x 1131 x 35 mm |
| Weight | 26.4kg |
| NOCT | 44.07°C |
| PTC Rating | 419.1W |
📋 Data verified: June 2026
📄 Specs based on STC (1000 W/m², 25°C, AM 1.5)
🏷️ 312 JA Solar models in database
FAQ
How long is the warranty for the JA Solar JAM78S10-440/MR?
The JAM78S10-440/MR comes with a 25-year product warranty covering defects and degradation.
What are the dimensions and weight of the JA Solar JAM78S10-440/MR?
It measures 1866 x 1131 x 35 mm and weighs 26.4kg.
What is the max power output of the JA Solar JAM78S10-440/MR?
The JA Solar JAM78S10-440/MR is rated at 440W under STC (1000 W/m², 25°C, AM 1.5).
How efficient is the JA Solar JAM78S10-440/MR?
This panel has 20.85% efficiency, which is above average for commercial solar panels.
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📊 Brand Context
JA Solar offers 312 solar panel models from 165W to 635W.
Browse all JA Solar models →