Hi-MO X10 Scientist — LR7-72HVD
The Hi-MO X10 Scientist is LONGi's flagship panel and the world's highest-efficiency mass-produced module. Three technologies combine to achieve this: N-TaiRay silicon wafers (grown in-house for maximum purity), HPBC 2.0 back-contact cells (all electrical contacts on the rear — no shading from front busbars), and 0BB (Zero Busbar — eliminates ribbon shading entirely).
The result: up to 24.80% module efficiency, a temperature coefficient of -0.26%/°C (best in class), and the only LONGi panel with a 15-year product warranty.
Full Technical Specifications
| Parameter | LR7-72HVD-640M | LR7-72HVD-650M | LR7-72HVD-660M | LR7-72HVD-670M |
|---|---|---|---|---|
| Peak Power (Pmax) | 640W | 650W | 660W | 670W |
| Module Efficiency | 23.69% | 24.06% | 24.43% | 24.80% |
| Temp. Coeff. Pmax | -0.26%/°C | |||
| Temp. Coeff. Voc | -0.24%/°C | |||
| Temp. Coeff. Isc | +0.05%/°C | |||
| Cell Technology | N-TaiRay + HPBC 2.0 + 0BB | |||
| Cell Arrangement | 144 cells (6×24), half-cut | |||
| Product Warranty | 15 Years | |||
| Performance Warranty | 30 Years — ≥88.85% at year 30 | |||
| Annual Degradation | ≤0.35%/year (after year 1) | |||
| First Year Degradation | ≤1% | |||
| Module Dimensions | ~2382 × 1134 × 30 mm | |||
| Module Weight | ~33.5 kg | |||
| Front Load (Snow/Wind) | 5,400 Pa | |||
| Back Load (Wind) | 2,400 Pa | |||
| Hail Resistance | 25 mm diameter at 23 m/s | |||
| Junction Box | IP68, 3 diodes | |||
| Operating Temperature | -40°C to +85°C | |||
* Full STC electrical parameters (Voc, Isc, Vmp, Imp) are in the downloadable datasheet above. Specifications subject to manufacturing tolerances.
Why the Hi-MO X10 Leads — In Pakistan's Climate
Best-in-Class Temperature Performance
At -0.26%/°C, the X10 loses far less power in summer heat than conventional panels at -0.40%/°C. On a Faisalabad rooftop where surface temperatures hit 55–60°C in July, the X10 recovers 3–4% more power every single day — compounding over 30 years.
No Shading From the Front
HPBC 2.0 moves all electrical contacts to the rear of the cell. 0BB eliminates front busbars entirely. The full panel face captures sunlight — no ribbons or wires blocking it. This is why the X10 outperforms TOPCon panels in real-world Pakistan conditions.
Fewer Panels for the Same Output
At 24.80% efficiency, fewer X10 panels are needed to achieve the same system output. A 10 kW system needs ~15 × 670W X10 panels vs ~20 conventional 500W panels. Smaller roof area, less structure cost, cleaner installation.
15-Year Product Warranty — Unique to X10
Every other LONGi model carries a 12-year product warranty. The Hi-MO X10 Scientist is the only panel with a 15-year product warranty — 3 extra years of manufacturer coverage. After 30 years, ≥88.85% output is guaranteed in writing.
Variants — What's Available
| Variant | Key Feature | Best For | Stock at Saigal |
|---|---|---|---|
| Scientist | Standard glass — maximum efficiency | Residential & industrial rooftops | ✅ In Stock |
| Guardian (Light) | Low-weight frame — 7.2 kg/m² | Roofs with weight limits | On request |
| Guardian (Anti-Glare) | Anti-reflective coating | Near airports / high-visibility areas | On request |
| Guardian (Anti-Dust) | Hydrophobic coating reduces dust adhesion | Dusty industrial environments | On request |
Compatible System Pairings
Residential Hybrid (1–3 ACs)
6–8 × X10 650W panels · Solis S6-EH1P 6kW inverter · Dyness DL5.0C Pro battery. Runs all ACs during sun hours with 4–6 hrs battery backup through load-shedding.
Industrial On-Grid (100–500 kW)
100–800 × X10 670W panels · Solis S6-EH3P three-phase inverters. Maximum output per m² — ideal when roof space is limited vs installed capacity target.