Himo 7 Longi Solar Panels
LONGi Solar (founded 2000, China) is the world’s largest monocrystalline solar manufacturer, known for its high-efficiency N-Type TOPCon technology
HIMO 7 Longi Solar Panels (615W), including specifications, features, pricing, and best-use cases:
1. Key Specifications
| Feature | Details |
|---|---|
| Model | LONGi HIMO 7 (LR5-72HBD-615M) |
| Cell Type | Mono PERC Half-Cut (Higher efficiency, better shading tolerance) |
| Power Output | 615W (STC) |
| Efficiency | ~22.3% (Industry-leading for large-format panels) |
| Dimensions | 2279 × 1134 × 30 mm (L × W × T) |
| Weight | ~28 kg |
| Voltage (Vmp) | ~41.6V |
| Current (Imp) | ~14.78A |
| Max System Voltage | 1500V (UL/IEC certified) |
| Temperature Range | -40°C to +85°C |
| Warranty | 12-year product warranty, 30-year linear power warranty (≥87.4% output at year 30) |
2. Key Features
✔ High Power Density – 615W from a single panel reduces installation costs.
✔ Half-Cut Cell Design – Lower resistive losses, better performance in partial shade.
✔ PERC Technology – Enhanced light absorption for higher efficiency.
✔ Durability – Salt mist, ammonia, and PID-resistant (ideal for harsh climates).
✔ Low LID (Light-Induced Degradation) – Stable long-term performance.
3. System Compatibility
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Inverters: Works with most 1500V string inverters (e.g., Solis 10kW, Huawei, Sungrow).
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Mounting: Compatible with rooftop/ground mounts (check rail spacing for large size).
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Optimal Use: Best for utility-scale, commercial, or large residential systems (due to size).
4. Price & Availability
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Cost: ~18500- 20000 per panel (varies by region and bulk discounts).
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Where to Buy: Authorized LONGi distributors (Pakistan Solar Traders)
5. Pros & Cons
Pros
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Industry-leading 615W output per panel.
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High efficiency (22.3%) and low degradation.
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Robust warranty (12-year product, 30-year performance).
Cons
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Large size may not fit all rooftops.
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Higher weight (~28 kg) requires sturdy mounting.
6. Best For
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Commercial/Industrial Solar Farms – Maximizes power per square meter.
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Large Residential Rooftops – Fewer panels needed for 10kW+ systems.
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High-Voltage String Systems – Pairs well with 1500V inverters.
7. Comparison to Similar Panels
| Panel Model | Power | Efficiency | Warranty | Price/Watt |
|---|---|---|---|---|
| LONGi HIMO 7 615W | 615W | 22.3% | 12/30 years | ~$0.45–$0.55 |
| Jinko Tiger Neo 610W | 610W | 22.3% | 12/30 years | ~$0.45–$0.55 |
| Trina Vertex S 600W | 600W | 21.6% | 12/25 years | ~$0.40–$0.50 |
(LONGi competes closely with Jinko/Trina in efficiency but leads in wattage.)
8. Installation Tips
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String Sizing: 12–14 panels per string (1500V system, depends on inverter).
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Spacing: Allow airflow to prevent overheating (large panels trap more heat).
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Monitoring: Use inverter-level or optimizer-based tracking (e.g., Tigo TS4).
Need help calculating how many panels you’d need for a 10kW system? Or a quote from suppliers? Let me know!
Cell Orientation 144 (6×24)
Junction Box IP68, three diodes
Glass Single glass, 3.2mm coated tempered glass
Frame Anodized aluminum alloy frame
Weight 28.5kg
Dimension 2382×1134×30mm
Packaging 36pcs per pallet / 144pcs per 20’GP / 720pcs per 40’HC
