Get yours today!
In the last 7 days
Delivery timeframe shown above at checkout
Unlimited lifetime support, always available.
Trade pricing on 169 authorized brands. Full OEM warranties. 7-10 business days delivery.
Shop All ProductsPremium monocrystalline and bifacial panels with 25-year warranties from authorized manufacturers.
Shop Solar PanelsString, micro, and hybrid inverters from 8+ authorized brands. Full warranty and technical support.
Shop InvertersHome and commercial battery systems from leading manufacturers. Grid-tied and off-grid options.
Shop BatteriesRoof and ground mount systems from IronRidge, Unirac, and Quick Mount PV. All components in stock.
Shop RackingMPPT and PWM charge controllers for off-grid and hybrid solar systems from 5+ authorized brands.
Shop ControllersHome standby, portable, and commercial generators. Automatic transfer switches and installation accessories.
Shop GeneratorsLevel 1, Level 2, and commercial EV chargers from leading brands. Smart connectivity and universal compatibility.
Shop EV ChargersBreakers, panels, wire, conduit, and safety switches from Square D, Siemens, Eaton, and more. Not just solar.
Shop Electrical50,000+ SKUs, 169 authorized brands. Our team helps you find the right products for any project.
Get a Quote
Model QPM-645S | PERC Monocrystalline | 132 Cells 210×105 mm | Monofacial | 1500V System Voltage
The QPower QPM-645S 645W PERC monocrystalline solar panel is designed for high output and long term reliability in demanding installations. This premium module combines advanced PERC cell technology with 132 large format monocrystalline cells to deliver impressive efficiency and stable performance. The panel operates at a maximum power of 645 Wp with efficiency up to 21.41 percent, making it suitable for commercial rooftops and utility scale projects. A robust anodized aluminium frame and 3.2 mm tempered glass help protect the cells against harsh weather and mechanical loads. The module supports system voltages up to 1500 V, allowing cost efficient string designs and reduced balance of system components. With temperature ratings from minus 40 to 85 degrees Celsius, it can be deployed across diverse climate zones. A 12 year product warranty and long term power warranty with low annual degradation support reliable energy generation over decades. Engineered and supplied by QPower in Uzbekistan, this panel offers a strong blend of output, durability and value for modern solar projects.
High power density for efficient layouts: The 645 Wp power rating enables more installed capacity on limited roof or ground space. This benefit improves project yields without requiring larger installation areas.
Advanced PERC cell technology: PERC monocrystalline cells capture more sunlight and convert it into electricity more efficiently. This design supports strong performance under a wide range of irradiance conditions.
Long term reliability and warranties: A 12 year product warranty is combined with power warranties of 92 percent at year 12 and 83 percent at year 30. This structure demonstrates confidence in long term output stability.
Robust construction for harsh climates: Tempered glass, an anodized aluminium frame and IP68 junction box protection enable dependable operation in challenging environments. The panel tolerates temperatures from minus 40 to 85 degrees Celsius.
Flexible system design with 1500 V rating: The maximum system voltage of 1500 V allows longer strings and reduced cabling. This flexibility can lower balance of system costs and simplify large scale array design.
This module converts sunlight into usable direct current electricity using high efficiency PERC monocrystalline cells. Each of the 132 cells is interconnected to create an optimised current and voltage profile at the module level. Under standard test conditions, the panel delivers a maximum power of 645 Wp, with a voltage at maximum power of 37.7 volts and current of 17.11 amperes. The cells generate voltage when exposed to light, and current flows through the integrated busbars and connectors. A sealed junction box with bypass diodes manages current paths and helps reduce losses caused by cell shading. The module is then wired into a string and connected to an inverter, which converts the direct current into alternating current for on site use or grid export. Temperature coefficients are carefully engineered so that output remains predictable as module temperatures change during operation. Over its lifetime, degradation is controlled to a total rate of 0.57 percent per year, maintaining strong performance across three decades.
PERC monocrystalline energy conversion: PERC technology adds a passivated rear surface to each monocrystalline cell, which reflects unabsorbed light back into the cell. This process increases the chances of photon absorption and improves electrical output from the same incident sunlight.
Optimised electrical characteristics: At maximum power, the QPM-645S operates at 37.7 volts and 17.11 amperes, supporting efficient string design. Open circuit voltage reaches 44.8 volts, and short circuit current is 18.25 amperes, giving installers clear parameters for safe and effective system sizing.
Thermal behaviour and durability: The temperature coefficient of power is minus 0.36 percent per degree Celsius, limiting performance losses at higher operating temperatures. Voc and Isc coefficients are carefully balanced, while tempered glass and IP68 junction protection preserve these characteristics in real world conditions.
| Module Type | Monocrystalline PERC, Monofacial |
| Model Number | QPM-645S |
| Power Range | 645 – 665 Wp |
| Maximum Power (Pmax) – Main Variant | 645 Wp |
| Maximum Power (Pmax) – Secondary Listing | 480 Wp (additional configuration reference) |
| Module Efficiency | 20.76 – 21.41 % |
| Voltage at Maximum Power (Vmpp) – 645 Wp | 37.7 V |
| Current at Maximum Power (Impp) – 645 Wp | 17.11 A |
| Open Circuit Voltage (Voc) – 645 Wp | 44.8 V |
| Short Circuit Current (Isc) – 645 Wp | 18.25 A |
| Voltage at Maximum Power (Vmpp) – 480 Wp Listing | 34.47 V |
| Current at Maximum Power (Impp) – 480 Wp Listing | 13.92 A |
| Open Circuit Voltage (Voc) – 480 Wp Listing | 41.65 V |
| Short Circuit Current (Isc) – 480 Wp Listing | 14.82 A |
| Total Degradation Rate | 0.57 % per year (linear approximation) |
| Nominal Operating Temperature | 45 ± 2 °C |
| Operating Temperature Range | -40 to 85 °C |
| Temperature Coefficient of Pmax | -0.36 % / °C |
| Temperature Coefficient of Voc | -0.26 % / °C |
| Temperature Coefficient of Isc | 0.04 % / °C |
| Maximum System Voltage | 1500 V |
| Series Fuse Rating | 30 A |
| Panel Dimensions (H × W × D) | 2384 × 1303 × 35 mm |
| Weight | 34.4 kg |
| Cell Size | 210 × 105 mm |
| Cell Count | 132 cells |
| Glass Type and Thickness | 3.2 mm tempered glass |
| Frame Type | Anodized aluminium frame, black finish |
| Junction Box Diodes | 3 bypass diodes |
| Junction Box Protection Class | IP68 |
| Brand / Seller | QPower, Uzbekistan |
Certifications: Designed to comply with common international standards for crystalline PV modules. Detailed certification lists are provided in the official datasheet or upon request.
Inverter Compatibility: Suitable for use with most modern grid tied and hybrid inverters that support 1500 V systems when correctly configured by a qualified installer.
Environmental: Built for outdoor use with IP68 junction box protection, durable tempered glass and anodized aluminium frame for reliable performance in varied climates.
Warranty: 12 year product warranty with power warranty of 92 % at year 12 and 83 % at year 30, reflecting a controlled degradation rate of around 0.57 % per year under standard operating conditions.
● Available | Contact us for lead time and pricing
From hurricanes to blackouts, reliable solar power ensures you're able to keep your home & family safe no matter what comes your way.
Making one-click solar solutions simple since 2018. Whether you’re powering a cabin, charging devices, or backing up your home.
Say goodbye to reliance on the energy companies. Enjoy the same freedom that 50,000+ customers have with their own solar power system.
$150 Value - Free Offer (Limited Time Only!) No Strings Attached. Totally Free. Takes Less than 2 Minutes.