Overview
Solar panel
620W · 23% efficiency · Monocrystalline solar panel by JA Solar
Power
620W
Efficiency
23%
Voc
48.5V
Isc
16.13A
Warranty
12-year product warranty and 30-year linear power output warranty
$309.00
at A1 SolarstoreImages
Where to Buy
Affiliate links — we may earn a commission. Learn more
Price History
All-time low: $309.00 at A1 Solarstore (April 4, 2026)
Pros and Cons
Pros
- High efficiency (23%) — more power per square foot of roof space
- High wattage (620W) — fewer panels needed for your system
- Monocrystalline cells — better performance in low light and heat
Cons
- No manufacturer documentation available on our site
Specifications
Electrical Specifications
Rated Power (Pmax) | 620W |
Efficiency | 23% |
Open Circuit Voltage (Voc) | 48.5V |
Short Circuit Current (Isc) | 16.13A |
Voltage at Max Power (Vmp) | 40.21V |
Current at Max Power (Imp) | 15.42A |
Max System Voltage | 1500V |
Physical Characteristics
Cell Type | Monocrystalline |
Cells in Series | 66 |
Strings in Parallel | 2 |
Frame Color | silver |
Connector Type | QC 4.10-351/ MC4-EVO2A |
Temperature Performance
Temperature Coefficient (Voc) | -0.247%/°C |
Temperature Coefficient (Pmax) | -0.317%/°C |
Operating Temperature | -40°F to 185°F |
NOCT | 45.954°C |
Warranty
Product Warranty | 12-year product warranty and 30-year linear power output warranty |
Physical Dimensions
Weight | 73.23 lbs |
Dimensions (L × W × H) | 93.78" × 44.65" × 1.38" |
Related Calculators & Tools
Roof Solar Power Calculator
Estimate how much solar power your roof can produce based on location and panel specs.
Solar Panel Angle Calculator
Find the optimal tilt angle for your solar panels based on your latitude.
Series/Parallel Calculator
Calculate combined voltage, current, and power for panels wired in series or parallel.
Solar Charge Controller Calculator
Size your charge controller based on your solar panel array and battery bank.
Where to Buy
Affiliate links — we may earn a commission. Learn more
Price History
All-time low: $309.00 at A1 Solarstore (April 4, 2026)
JA Solar JA Solar 620W Solar Panel 132 Cell Bifacial JA-JAM66-D45-620LB from
Check Best Price $309.00
