The JA Solar JAM66D45-620/LB is a 620W N-type bifacial monocrystalline solar panel designed for residential, commercial and utility-scale solar installations. Its double-glass bifacial construction allows the module to generate power from both the front and rear sides, while N-type cell technology provides low degradation and stable long-term performance. The 132-cell module has a 23.0% efficiency rating and a maximum power output of 620W under standard test conditions.
This listing is supplied as a 6-panel pack, providing a combined nominal panel capacity of 3.72kW.
Key Features
620W maximum power output per panel
N-type monocrystalline cells
Bifacial double-glass design
132 cells (6 × 22)
23.0% module efficiency
Low degradation characteristics
Suitable for residential, commercial and utility-scale installations
IP68 junction box
MC4-compatible connector options
0 to +3% power tolerance
12-year product warranty
30-year power warranty
Technical Specifications
Brand: JA Solar
Model: JAM66D45-620/LB
Product Type: N-Type Bifacial Mono Solar Panel
Maximum Power (Pmax): 620W
Open Circuit Voltage (Voc): 48.50V
Maximum Power Voltage (Vmp): 40.21V
Short Circuit Current (Isc): 16.13A
Maximum Power Current (Imp): 15.42A
Module Efficiency: 23.0%
Cell Type: Monocrystalline N-Type
Number of Cells: 132 (6 × 22)
Dimensions: 2382 × 1134 × 30 mm
Weight: 33.1 kg per panel
Front/Back Glass: 2.0mm / 2.0mm
Junction Box: IP68, 3 diodes
Power Tolerance: 0 to +3%
Connector: QC 4.10-351 / MC4-EVO2A
Cable: 4mm²
Panel Quantity: 6
Combined Nominal Capacity: 3.72kW
Product Warranty: 12 years
Power Warranty: 30 years
The core electrical and mechanical specifications above are consistent with JA Solar's official JAM66D45-620/LB documentation.
Available Variants
620W — 6 Pack
What’s Included
6 × JA Solar 620W bifacial N-type solar panels
