The JA Solar 620W Bifacial Mono Solar Panel (model JAM66D45 620/LB) is a high-output N-Type double glass module from the Deep Blue 4.0 Pro series. It delivers a module efficiency of 23%, making it one of the strongest-performing panels available in South Africa today. It suits homes, commercial rooftops, farms, and large-scale industrial installations.
JA Solar 620W Bifacial Mono Solar Panel Benefits
- Captures energy on both sides, adding up to 25% more yield from reflected light.
- N-Type TOPCon cells minimise light-induced degradation for stable long-term output.
- Backed by a 12-year workmanship warranty and a 30-year linear power output guarantee.
JA Solar panels are stocked by Solar Panel Energy, an authorised supplier with warehouses across South Africa. You can also browse the complete JA Solar panel range to find the right module for your system size.
Full Technical Product Specifications
- Model: JAM66D45 620/LB.
- Brand: JA Solar.
- Cell Type: N-Type Mono TOPCon.
- Number of Cells: 132 (6×22).
- Rated Maximum Power (Pmax): 620W.
- Module Efficiency: 23.0%.
- Open Circuit Voltage (Voc): 48.50V.
- Maximum Power Voltage (Vmp): 40.21V.
- Short Circuit Current (Isc): 16.13A.
- Maximum Power Current (Imp): 15.42A.
- Dimensions: 2382 x 1134 x 30mm.
- Weight: 33.1kg.
- Frame: 30mm anodised silver aluminium.
- Junction Box: IP68-rated.
- Temperature Coefficient (Pmax): -0.29% per degree Celsius.
- Workmanship Warranty: 12 years.
- Power Output Guarantee: 30-year linear.
Compatible Solar System Components
These panels connect via standard MC4 solar panel connectors and pair with hybrid inverters, off-grid inverters, and lithium battery banks. Browse the full solar panel range to compare wattage options for your system.
Best Use Cases In South Africa
- Homeowners reducing monthly Eskom electricity costs.
- Businesses and factories needing high-output commercial arrays.
- Farms and smallholdings running boreholes and off-grid loads.
Frequently Asked Product Questions
Q. Is the JA Solar 620W Bifacial Mono Solar Panel good for load shedding backup in South Africa?
A. Yes, it pairs with any compatible hybrid inverter and lithium battery to keep your home or business powered through outages.
Q. How many JA Solar 620W panels do I need for my home inverter system?
A. A typical 5kW home system uses around 8 to 10 panels, though your final count depends on your daily energy consumption and inverter size.
Q. What inverter size works with JA Solar 620W bifacial solar panels?
A. The panel’s Voc of 48.50V and Vmp of 40.21V are compatible with most 5kW to 15kW hybrid inverters available in South Africa, however always confirm string sizing with your installer.
Q. What is the difference between the JA Solar 620W bifacial panel and a normal mono solar panel?
A. A bifacial panel generates power from both the front and rear surfaces, capturing reflected light from the ground or roof and therefore producing more energy from the same installation footprint.
Q. Where can I buy JA Solar 620W bifacial solar panels in South Africa?
A. Solar Panel Energy stocks the JAM66D45 620/LB with warehouses in Midrand, Cape Town, Durban, Bloemfontein, Port Elizabeth, and Nelspruit for fast nationwide delivery.
For the full technical details, download the official JA Solar JAM66D45 620/LB datasheet or view the JA Solar JAM66D45 LB product page for certifications and series details.
Order today from Solar Panel Energy with delivery across South Africa in 2 to 5 working days. Request a free quote and get expert system sizing for your JA Solar 620W Bifacial Mono Solar Panel.
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