HomePV ModulesBack ContactHigh Power 645W 655W 665W Bifacial Dual Glass GBC PV Module Wholesale
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High Power 645W 655W 665W Bifacial Dual Glass GBC PV Module Wholesale

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  • High Power Output

    Reaches up to 665W with 24.6% efficiency, exceeding Tongwei's latest TNC2.0 series modules and providing exceptional energy production for extensive solar installations.

  • Bifacial Energy Gain

    With up to 70% bifacial factor, the module produces more power by capturing reflected light from the rear side.

    • Trusted 645–665W Mono Bifacial PV Module Supplier
    • Premium 645–665W Dual Glass Mono PV Panel Bulk Order
    • Premium 645–665W Dual Glass Mono PV Panel Bulk Order
    • 645-665W Bifacial Dual Glass GBC PV Panel Direct From Warehouse

  • Durable Dual Glass Structure

    The dual glass design enhances resistance against micro-cracks, moisture, and harsh climates, ensuring long-lasting stability and strength.

  • Stable Temperature Performance

    With a low -0.26%/°C power temperature coefficient, the module maintains reliable energy output even in high-temperature environments.

    • Inquire Download
    • Trusted 645–665W Mono Bifacial PV Module Supplier
    • Premium 645–665W Dual Glass Mono PV Panel Bulk Order
    • Premium 645–665W Dual Glass Mono PV Panel Bulk Order
    • 645-665W Bifacial Dual Glass GBC PV Panel Direct From Warehouse
    Inquire Download

  • High Power Output

    Reaches up to 665W with 24.6% efficiency, exceeding Tongwei's latest TNC2.0 series modules and providing exceptional energy production for extensive solar installations.

  • Bifacial Energy Gain

    With up to 70% bifacial factor, the module produces more power by capturing reflected light from the rear side.

  • Durable Dual Glass Structure

    The dual glass design enhances resistance against micro-cracks, moisture, and harsh climates, ensuring long-lasting stability and strength.

  • Stable Temperature Performance

    With a low -0.26%/°C power temperature coefficient, the module maintains reliable energy output even in high-temperature environments.

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    Mechanical Parameters

    Cell TypeGBC
    No. of Cells144 (6×24)
    Dimensions2382 × 1134 × 30mm
    GlassDual glass, 2.0 + 2.0mm Heat Strengthened Glass
    FrameAnodized aluminum
    Weight33.5 kg (73.85 lbs)
    Output CablesTüV 1x4mm²,(+)300mm,(-)200mm or Customized Length
    Packaging37 pcs per pallet
    148 pcs per 20’ GP 740 pcs per 40’ HC
    Factory Direct 645–665W Dual Glass Bifacial Mono Solar Module
    This diagram shows the exact mounting hole positions for the 645W 655W 665W dual glass GBC solar panel, ensuring accurate alignment and secure installation for residential, commercial, and industrial solar setups.

    Electrical Parameters (STC*)

    Module Type: SP-3-72HGBD-635M635 640 645 650 655 660665
    Maximum power (Pmax/W)635 640 645 650 655660665
    Open Circuit Voltage (Voc/V)53.70 53.80 53.90 54.00 54.1054.2054.30
    Short Circuit Current (Isc/A)14.88 14.94 15.00 15.06 15.1215.1815.24
    Voltage at Maximum power (Vmpp/V)45.00 45.10 45.20 45.30 45.4045.5045.60
    Current at Maximum Power (Imp/A)14.12 14.20 14.27 14.35 14.4314.5114.59
    Module Efficiency(%)23.5 23.7 23.9 24.1 24.224.424.6

    BC Module 635-665W Panel - Technical Highlights

    Advantage PointTechnical HighlightUser Benefit / Comparative Value
    24.6% Efficiency + 665W Peak Power for MW-Scale DensityAdopts gapless GBC back-contact technology, 24.6% maximum efficiency, and 144-cell high-power layout—outperforming Tongwei TNC2.0 series by 1.4% efficiencyCuts module quantity per 50MW project by ~2,800 units vs. 600W-class conventional panels; reduces land occupation by 12% (critical for ground-mount projects with limited acreage) and slashes installation labor costs by 15%
    70±5% Bifacial Gain + Wide Light Adaptability
    Bifacial factor of 70±5%, capturing rear-side irradiance from ground reflections (e.g., gravel, white membranes) or diffused light (overcast/high-latitude regions)    		Boosts annual energy yield by 13-20% vs. single-sided modules—adds ~1.2GWh extra power for a 50MW project yearly, shortening investor payback periods by 2-3 years
    5400Pa Load Resistance + -40℃~+85℃ Climate Adaptation5400Pa front/2400Pa rear static load resistance (withstands heavy snow in Northern Europe), 25mm hail impact resistance, and -40℃~+85℃ operating rangeEliminates downtime risks in extreme climates (e.g., Middle East high heat, Canadian snowstorms); reduces long-term maintenance costs by 30% vs. modules with lower load ratings
    1500V High Voltage + 30A Fuse for System Cost Optimization1500V maximum system voltage (IEC standard) + 30A high-current fuse design—supports longer string lengths (up to 30 modules/string)Lowers BOS costs by 18-22%: reduces inverter quantity by 20%, cuts cable/racking usage by 15%, and simplifies system design for large-scale projects
    IP68 Junction Box + Dual-Glass Encapsulation for Long LifespanIP68-rated junction box (moisture/dust-proof, suitable for humid regions like Southeast Asia) + 2.0+2.0mm heat-strengthened dual glass (resists micro-cracks and UV aging)Guarantees 25+ years of stable operation with ≤0.35% annual degradation; reduces replacement rates (critical for utility projects with 20+ year PPA contracts)
    Bulk Packaging + Warehouse Direct Supply for Logistics EfficiencyFactory-direct bulk packaging (37 pcs/pallet, 888 pcs/40’ HC) + global warehouse stock (supports 7-day delivery to key markets like Europe/USA)Lowers logistics cost per unit by 14% vs. small-batch shipping; shortens project lead time by 2-4 weeks, helping EPCs meet tight construction schedules

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