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Toggle540W 545W 550W Solar Panel Chinese Manufacturers &Suppliers
Ultra-High Conversion Rate
MONO PERC Cells with 21.7%+ Efficiency – Generate 30% More Energy Than Conventional Panels
All-Weather Resilience
Anti-Reflective Glass & IP68 Waterproof Design – Stable Output in Rain, Snow, or Extreme Heat (-40°C~85°C)
Compact & Easy Installation
Optimized 108-Cell Layout – Saves 15% Rooftop Space While Maximizing Energy Yield
25-Year Linear Power Warranty
Certified by TÜV & IEC – Backed by 15-Year Material Quality Guarantee

Key Highlights:
21.7% Max Module Efficiency
0~3% Power Tolerance
<2% First Year Power Degradation
0.45% Annual Degradation (Years 2-30)
Half-Cell Technology for Lower Operating Temperature
Mechanical Parameters
Parameter | Specification |
---|---|
Cell Orientation | 144 (6×24) |
Junction Box | IP68, three diodes |
Output Cable | 4mm², +400mm/-200mm (±1400mm customizable) |
Glass | Dual glass, 2.0-2.0mm heat strengthened |
Frame | Anodized aluminum alloy |
Weight | 31.8kg |
Dimensions | 2278×1134×30mm |
Packaging | 36pcs/pallet, 180pcs/20ft GP, 720pcs/40ft HC (576pcs for USA) |
Electrical Characteristics (STC & NOCT)
Module Type | LRS-72HBD-540M | LRS-72HBD-545M | LRS-72HBD-550M | LRS-72HBD-555M | LRS-72HBD-560M |
---|---|---|---|---|---|
Testing Condition | STC / NOCT | STC / NOCT | STC / NOCT | STC / NOCT | STC / NOCT |
Max Power (Pmax/W) | 540 / 403.6 | 545 / 407.4 | 550 / 411.1 | 555 / 414.8 | 560 / – |
Open Circuit Voltage (Voc/V) | 49.50 / 46.54 | 49.65 / 46.68 | 49.80 / 48.82 | 49.95 / 46.97 | 50.10 / – |
Short Circuit Current (Isc/A) | 13.85 / 11.17 | 13.92 / 11.23 | 13.99 / 11.29 | 14.05 / 11.34 | 14.10 / – |
Voltage at Pmax (Vmp/V) | 41.65 / 38.86 | 41.80 / 39.00 | 41.95 / 39.14 | 42.10 / 39.28 | 42.25 / – |
Current at Pmax (Imp/A) | 12.97 / 10.39 | 13.04 / 10.45 | 13.12 / 10.51 | 13.19 / 10.56 | 13.26 / – |
Module Efficiency (%) | 20.9 | 21.1 | 21.3 | 21.5 | 21.7 |
Test uncertainty for Pmax: ±3%
Rear Side Power Gain (Reference: 550W Front)
Pmax (W) | Voc (V) | Isc (A) | Vmp (V) | Imp (A) | Power Gain |
---|---|---|---|---|---|
578 | 49.80 | 14.68 | 41.95 | 13.77 | +5% |
605 | 49.80 | 15.38 | 41.95 | 14.43 | +10% |
633 | 49.90 | 16.08 | 42.05 | 15.08 | +15% |
660 | 49.90 | 16.78 | 42.05 | 15.74 | +20% |
688 | 49.90 | 17.48 | 42.05 | 16.39 | +25% |
Operating Parameters
Temperature Range: -40°C to +85°C
Power Output Tolerance: 0 to +3%
Voc/Isc Tolerance: ±3%
Max System Voltage: DC1500V (IEC/UL)
Max Series Fuse: 30A
Nominal Cell Temp: 45±2°C
Protection Class: Class II
Bifaciality: 70±5%
Fire Rating: UL Type 29 / IEC Class C
Mechanical Load & Environmental Tests
Parameter | Specification |
---|---|
Front Static Load | 5400Pa |
Rear Static Load | 2400Pa |
Hail Test | 25mm hail @ 23m/s |
Temperature Coefficients (STC)
Parameter | Coefficient |
---|---|
Isc Temp Coefficient | +0.050%/°C |
Voc Temp Coefficient | -0.265%/°C |
Pmax Temp Coefficient | -0.340%/°C |
Certifications & Compliance
IEC 61215, IEC 61730, UL 61730
ISO 9001:2015 (Quality Management)
ISO 14001:2015 (Environmental Management)
ISO 45001:2018 (Occupational Health & Safety)
IEC 62941 (Module Design Qualification)
Mono PV Module
HIGH EFFICIENTY SERIES
A monocrystalline solar panel is an assembly composed of several monocrystalline silicon solar cells assembled on a panel in a certain manner.
PORTABLE SOLAR PANELS
HI-POWER SERIES
Hi-Power series, lighter, more suitable for portable power station

FLEXIBLE SOLAR PANELS
TF SERIES
Developed with patented material technology, high-efficiency cell design

Rigid Solar Panel
SGM SERIES
The SGM series can charge 12V batteries such as boats, RVs, or any other system with 12V batteries or battery packs.

WHy Get Solar Panels Manufacturers & Suppliers
High-Efficiency Technology
Advanced solar cells maximize energy output, ensuring superior performance even in low-light conditions
Durable & Sustainable Design
Robust materials and rigorous testing guarantee 25+ years of reliability, backed by industry-leading warranties
End-to-End Custom Solutions
Tailored systems for residential/commercial needs, paired with seamless installation support and financing options
Competitive Pricing & Trusted Service
Cost-effective pricing with rapid ROI, supported by 24/7 customer care and global technical expertise
1. Benefit From Your Committed Solar Panel Factory

- Strong ODM & OEM Ability
Your brand, your rules: Customize designs, branding, and specs effortlessly. We handle engineering, certifications, and logistics, ensuring your products stand out while cutting R&D costs and time-to-market.
- On-Time Delivery, Even for Tight Deadlines
No more inventory headaches: Our scalable factory adapts to your order size, delivering bulk shipments or custom designs 20% faster than industry averages
- Discount Solar Panel Sample
IWISSolar offers you a discount sample for testing and to confirm that we met your custom design requirements. For existing samples, it takes about 7 days to reach. If you want your own designs, it takes 10-15 days, subject to your designs whether they need a new printing screen, etc. Click here to.
2. Custom Your Bulk Solar Panel
Identify Your Solar Panel Idea
Share your needs: efficiency, size, or aesthetics.
Get free expert consultation to refine specs (e.g., wattage, frame color) for your project or market.
Custom Design & Printed Logo
Add your brand identity: choose panel colors, patterns, or print your logo directly.
We handle technical details (certifications, durability testing) and offer 3D prototypes for approval before mass production.
Types/Functions
High-power panels, Mix types to match diverse applications (residential, commercial, industrial).
Flexible/lightweight panels (for RVs or curved surfaces).
Smart panels (with built-in monitoring).
Custom Solar Panel For Your Brand
We provide custom solutions to all our customers and offer free consulting or samples of Solar Panels that you can take advantage of.