Seraphim S4 Series 430W vs Hanwha Q.PEAK DUO XL-G11 480W
The Hanwha Q.PEAK DUO XL-G11 480W wins this comparison by a narrow margin. It leads in efficiency (21.4% vs 21.2%) and matches or exceeds on warranty (12 vs 12 years). For most residential installations, the Hanwha Q.PEAK DUO XL-G11 480W is the stronger choice.
Key Differences
- • Seraphim S4 Series 430W is rated at 430W while Hanwha Q.PEAK DUO XL-G11 480W is rated at 480W, a 50W difference.
- • Hanwha Q.PEAK DUO XL-G11 480W achieves 21.4% efficiency vs 21.2% for the other, a 0.2 percentage point gap.
- • Both carry matching 12-year product warranties.
Specifications Breakdown
Module Efficiency
The Hanwha Q.PEAK DUO XL-G11 480W achieves 21.4% module efficiency compared to Seraphim S4 Series 430W's 21.2%, meaning Hanwha Q.PEAK DUO XL-G11 480W converts 0.2 percentage points more sunlight into electricity per square meter. In practical terms, the Seraphim S4 Series 430W produces 220.2 watts per square meter of panel area while the Hanwha Q.PEAK DUO XL-G11 480W produces 202.1 W/m². For rooftop installations where space is limited, this efficiency gap determines how many kilowatts you can fit on your available roof area. Over a 25-year system life, even a small efficiency advantage compounds into meaningful additional energy production.
Power Output
The Hanwha Q.PEAK DUO XL-G11 480W delivers 480W per panel versus 430W for the Seraphim S4 Series 430W, a 50W difference per module. To build an 8 kW residential system, you would need 19 Seraphim S4 Series 430W panels or 17 Hanwha Q.PEAK DUO XL-G11 480W panels. Choosing the higher-wattage option saves 2 panels, reducing total racking hardware, wiring, and installation labor costs. Higher wattage per panel is particularly valuable for commercial-scale installations where panel count directly impacts balance-of-system costs.
Temperature Coefficient
Both panels share an identical temperature coefficient of -0.34%/°C, meaning they lose power at the same rate as cell temperature rises above the 25°C standard test baseline. At 65°C cell temperature, both retain 93.2% of rated power. Neither panel has a thermal performance advantage, which makes this specification a non-factor in the comparison.
Warranty Coverage
The Seraphim S4 Series 430W is backed by a 12-year product warranty and 25-year performance guarantee, while the Hanwha Q.PEAK DUO XL-G11 480W offers 12-year product and 25-year performance coverage. Both offer identical product warranty duration. Based on their published degradation rates (1.5% first year then 0.5%/year for Seraphim S4 Series 430W; 1.5% first year then 0.5%/year for Hanwha Q.PEAK DUO XL-G11 480W), after 25 years the Seraphim S4 Series 430W should retain approximately 86.5% of original output versus 86.5% for the Hanwha Q.PEAK DUO XL-G11 480W. The end-of-life output levels are closely matched.
Physical Dimensions & Weight
The Seraphim S4 Series 430W measures 1722×1134×30mm and weighs 21 kg, while the Hanwha Q.PEAK DUO XL-G11 480W measures 2094×1134×35mm at 25.5 kg. 1.95 m² of panel area for the Seraphim S4 Series 430W versus 2.37 m² for the Hanwha Q.PEAK DUO XL-G11 480W. The Seraphim S4 Series 430W is 4.5 kg lighter per panel, which reduces structural load requirements on the roof and makes handling easier during installation. For a 20-panel system, that is a total weight difference of 90 kg. The more compact Seraphim S4 Series 430W may be easier to fit on irregularly shaped or space-limited rooftops.
Specification Comparison
| Specification | Seraphim S4 Series 430W | Hanwha Q.PEAK DUO XL-G11 480W |
|---|---|---|
| Power | 430W | 480W |
| Efficiency | 21.2% | 21.4% |
| Power Density | 20.5 W/sq ft | 18.8 W/sq ft |
| Cell Type | PERC Mono | PERC Mono |
| Bifacial | No | No |
| Weight | 21 kg | 25.5 kg |
| Temp Coefficient | -0.34%/°C | -0.34%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 2400 Pa | 2400 Pa |
| Product Warranty | 12 years | 12 years |
| Performance Warranty | 25 years | 25 years |
| Degradation (Year 1) | 1.5% | 1.5% |
| Annual Degradation | 0.5% | 0.5% |
| Country | China | China |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Hanwha Q.PEAK DUO XL-G11 480WThe Hanwha Q.PEAK DUO XL-G11 480W achieves 21.4% efficiency versus 21.2% — a 0.2 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 1.5 kW more total system capacity, or 7 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: TieBoth panels share a temperature coefficient of -0.34%/°C — identical heat tolerance.
3. Durability & Warranty
Winner: TieBoth panels offer identical 12-year product warranties and 0.5% annual degradation. Neither has a durability advantage.
4. Power Output
Winner: Hanwha Q.PEAK DUO XL-G11 480WThe Hanwha Q.PEAK DUO XL-G11 480W delivers 480W versus 430W per panel — 50W more. For an 8 kW system, you need 17 panels with the higher-wattage option versus 19 panels, saving 2 panels and the associated racking and labor costs.
5. Cell Technology
Winner: TieBoth panels use PERC Mono cell technology. No technology advantage for either product.
Seraphim S4 Series 430W
The Seraphim S4 Series delivers 430W using proven PERC technology at a competitive price point for residential installations.
Pros
- + Competitive pricing
- + Proven PERC technology
- + Compact design
- + Good value
Cons
- - Standard PERC efficiency
- - Shorter warranty period
- - Limited US presence
Hanwha Q.PEAK DUO XL-G11 480W
Hanwha Q.PEAK DUO XL-G11 is a large-format PERC panel delivering 480W for commercial rooftop installations.
Pros
- + Large format for commercial
- + Good output per panel
- + Proven technology
- + Bankable manufacturer
Cons
- - Standard PERC technology
- - Large size
- - Not for residential
Choose Seraphim S4 Series 430W If...
- ✓ Budget residential installations seeking competitive PERC pricing.
Choose Hanwha Q.PEAK DUO XL-G11 480W If...
- ✓ Your roof space is limited and you need maximum power per panel
- ✓ You want fewer panels to reach your target system size, reducing racking and labor costs
- ✓ Commercial rooftop installations seeking reliable large-format panels.
Our Recommendation
Both the Seraphim S4 Series 430W and Hanwha Q.PEAK DUO XL-G11 480W are excellent solar panel options, and the margin between them is narrow. The Hanwha Q.PEAK DUO XL-G11 480W wins 2 of 5 comparison dimensions by a slim margin. Your decision may come down to local pricing, installer availability, and which specific performance metrics matter most for your project. Either product is a solid investment.
Frequently Asked Questions
Which is better, Seraphim S4 Series 430W or Hanwha Q.PEAK DUO XL-G11 480W?
The Hanwha Q.PEAK DUO XL-G11 480W wins this comparison by a narrow margin. It leads in efficiency (21.4% vs 21.2%) and matches or exceeds on warranty (12 vs 12 years). For most residential installations, the Hanwha Q.PEAK DUO XL-G11 480W is the stronger choice.
Which panel is more efficient, Seraphim S4 Series 430W or Hanwha Q.PEAK DUO XL-G11 480W?
The Hanwha Q.PEAK DUO XL-G11 480W at 21.4% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 0.2 percentage points translates to approximately 50W per panel under standard test conditions.
Which has a better warranty, Seraphim S4 Series 430W or Hanwha Q.PEAK DUO XL-G11 480W?
The Seraphim S4 Series 430W comes with a 12-year product warranty and 25-year performance guarantee. The Hanwha Q.PEAK DUO XL-G11 480W offers 12-year product and 25-year performance warranties. Both offer identical warranty terms.
Which panel performs better in hot weather?
The Seraphim S4 Series 430W has a temperature coefficient of -0.34%/°C and the Hanwha Q.PEAK DUO XL-G11 480W is -0.34%/°C. Both handle heat equally. A lower (less negative) temperature coefficient is better.
How many Seraphim S4 Series 430W vs Hanwha Q.PEAK DUO XL-G11 480W panels do I need for an 8 kW system?
For an 8 kW system: you need 19 Seraphim S4 Series 430W panels (430W each) or 17 Hanwha Q.PEAK DUO XL-G11 480W panels (480W each). The Hanwha Q.PEAK DUO XL-G11 480W requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026