LONGi Hi-MO X6 445W vs Seraphim SRP-445-BMA-HV
The Seraphim SRP-445-BMA-HV wins this comparison by a clear margin. It offers better long-term durability with 15-year warranty. For most residential installations, the Seraphim SRP-445-BMA-HV is the stronger choice.
Key Differences
- • Both panels are rated at 445W, so the comparison comes down to efficiency, warranty, and technology.
- • Both achieve identical 22% module efficiency.
- • Seraphim SRP-445-BMA-HV comes with a 15-year product warranty vs 12 years for the other.
Specifications Breakdown
Module Efficiency
Both the LONGi Hi-MO X6 445W and Seraphim SRP-445-BMA-HV share identical 22% module efficiency, producing comparable power per unit area. The LONGi Hi-MO X6 445W generates 227.9 W/m² while the Seraphim SRP-445-BMA-HV generates 227.9 W/m² based on their respective panel dimensions. With matched efficiency, neither panel holds a density advantage for space-constrained rooftop installations, so other factors like warranty coverage and temperature performance become the deciding metrics.
Power Output
Both panels are rated at 445W under standard test conditions (STC), requiring 18 panels each to build an 8 kW system. With identical wattage ratings, the power output dimension is a draw and does not favor either panel. The real differentiators become efficiency density, temperature behavior, and long-term degradation rates which determine actual field performance beyond the nameplate rating.
Temperature Coefficient
Both panels share an identical temperature coefficient of -0.29%/°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 94.2% of rated power. Neither panel has a thermal performance advantage, which makes this specification a non-factor in the comparison.
Warranty Coverage
The LONGi Hi-MO X6 445W is backed by a 12-year product warranty and 25-year performance guarantee, while the Seraphim SRP-445-BMA-HV offers 15-year product and 30-year performance coverage. The Seraphim SRP-445-BMA-HV provides 3 additional years of defect protection, covering manufacturing issues, material failures, and premature performance loss. Based on their published degradation rates (1% first year then 0.4%/year for LONGi Hi-MO X6 445W; 1% first year then 0.4%/year for Seraphim SRP-445-BMA-HV), after 25 years the LONGi Hi-MO X6 445W should retain approximately 89.4% of original output versus 89.4% for the Seraphim SRP-445-BMA-HV. The end-of-life output levels are closely matched.
Physical Dimensions & Weight
The LONGi Hi-MO X6 445W measures 1722×1134×30mm and weighs 21.5 kg, while the Seraphim SRP-445-BMA-HV measures 1722×1134×30mm at 21.5 kg. 1.95 m² of panel area for the LONGi Hi-MO X6 445W versus 1.95 m² for the Seraphim SRP-445-BMA-HV. Their weights are closely matched, so neither panel imposes a significantly different structural load on the mounting system. Similar footprints mean both panels fit comparably on standard residential rooftop configurations.
Specification Comparison
| Specification | LONGi Hi-MO X6 445W | Seraphim SRP-445-BMA-HV |
|---|---|---|
| Power | 445W | 445W |
| Efficiency | 22% | 22% |
| Power Density | 21.2 W/sq ft | 21.2 W/sq ft |
| Cell Type | TOPCon N-type | TOPCon N-type |
| Bifacial | Yes | No |
| Weight | 21.5 kg | 21.5 kg |
| Temp Coefficient | -0.29%/°C | -0.29%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 2400 Pa | 2400 Pa |
| Product Warranty | 12 years | 15 years |
| Performance Warranty | 25 years | 30 years |
| Degradation (Year 1) | 1% | 1% |
| Annual Degradation | 0.4% | 0.4% |
| Country | China | China |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: TieBoth panels achieve 22% module efficiency, producing identical power per square meter. Neither has an advantage in space-constrained installations.
2. Hot Climate Performance
Winner: TieBoth panels share a temperature coefficient of -0.29%/°C — identical heat tolerance.
3. Durability & Warranty
Winner: Seraphim SRP-445-BMA-HVSeraphim SRP-445-BMA-HV leads with a 15-year product warranty versus 12 years. After 25 years, expect 89.4% vs 89.4% of original output for LONGi Hi-MO X6 445W and Seraphim SRP-445-BMA-HV respectively.
4. Power Output
Winner: TieBoth panels deliver 445W — identical power output per panel. System cost per watt will be the deciding factor.
5. Cell Technology
Winner: TieBoth panels use TOPCon N-type cell technology. No technology advantage for either product.
LONGi Hi-MO X6 445W
The Hi-MO X6 is LONGi's TOPCon N-type line offering 445W in a compact format, well-suited for space-constrained residential rooftops.
Pros
- + Compact size for residential roofs
- + Good N-type TOPCon efficiency
- + Advanced technology
- + Budget-friendly
Cons
- - Lower wattage than larger models
- - Mid-range efficiency for N-type
- - Less suited for very large roofs
Seraphim SRP-445-BMA-HV
Seraphim SRP-445-BMA-HV is an all-black N-type TOPCon panel delivering 445W with clean aesthetics for residential installations.
Pros
- + All-black aesthetics
- + N-type TOPCon technology
- + Compact residential format
- + Competitive pricing
Cons
- - Less known in US market
- - Limited installer base
- - Standard warranty
Choose LONGi Hi-MO X6 445W If...
- ✓ You prefer newer cell technology with a longer performance improvement runway
- ✓ Homeowners wanting N-type TOPCon technology in a compact residential format.
Choose Seraphim SRP-445-BMA-HV If...
- ✓ Long-term warranty protection is a top priority and you plan to stay in your home for 15+ years
- ✓ You prefer newer cell technology with a longer performance improvement runway
- ✓ Aesthetics-focused homeowners wanting all-black N-type panels at a good price.
Our Recommendation
We recommend the Seraphim SRP-445-BMA-HV for most buyers in this comparison. It wins 1 of 5 key dimensions and offers a clear advantage in the metrics that matter most for a solar panel purchase. The LONGi Hi-MO X6 445W remains a good product, but the Seraphim SRP-445-BMA-HV delivers better overall value for the majority of installations.
Frequently Asked Questions
Which is better, LONGi Hi-MO X6 445W or Seraphim SRP-445-BMA-HV?
The Seraphim SRP-445-BMA-HV wins this comparison by a clear margin. It offers better long-term durability with 15-year warranty. For most residential installations, the Seraphim SRP-445-BMA-HV is the stronger choice.
Which panel is more efficient, LONGi Hi-MO X6 445W or Seraphim SRP-445-BMA-HV?
The both panels share 22% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 0.0 percentage points translates to approximately 0W per panel under standard test conditions.
Which has a better warranty, LONGi Hi-MO X6 445W or Seraphim SRP-445-BMA-HV?
The LONGi Hi-MO X6 445W comes with a 12-year product warranty and 25-year performance guarantee. The Seraphim SRP-445-BMA-HV offers 15-year product and 30-year performance warranties. Seraphim SRP-445-BMA-HV provides 3 additional years of product coverage.
Which panel performs better in hot weather?
The LONGi Hi-MO X6 445W has a temperature coefficient of -0.29%/°C and the Seraphim SRP-445-BMA-HV is -0.29%/°C. Both handle heat equally. A lower (less negative) temperature coefficient is better.
How many LONGi Hi-MO X6 445W vs Seraphim SRP-445-BMA-HV panels do I need for an 8 kW system?
For an 8 kW system: you need 18 LONGi Hi-MO X6 445W panels (445W each) or 18 Seraphim SRP-445-BMA-HV panels (445W each). Both require the same number of panels.
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Last updated: February 2026