JA Solar JAM54S31 415W vs Aptos Solar DNA-108-MF10 415W
The Aptos Solar DNA-108-MF10 415W wins this comparison by a decisive margin. It offers better long-term durability with 30-year warranty. For most residential installations, the Aptos Solar DNA-108-MF10 415W is the stronger choice.
Key Differences
- • Both panels are rated at 415W, so the comparison comes down to efficiency, warranty, and technology.
- • JA Solar JAM54S31 415W achieves 21.5% efficiency vs 21.25% for the other, a 0.3 percentage point gap.
- • Aptos Solar DNA-108-MF10 415W comes with a 30-year product warranty vs 12 years for the other.
- • Aptos Solar DNA-108-MF10 415W has a superior temperature coefficient of -0.32%/°C vs -0.34%/°C, retaining more power in hot climates.
Specifications Breakdown
Module Efficiency
The JA Solar JAM54S31 415W achieves 21.5% module efficiency compared to Aptos Solar DNA-108-MF10 415W's 21.25%, meaning JA Solar JAM54S31 415W converts 0.3 percentage points more sunlight into electricity per square meter. In practical terms, the JA Solar JAM54S31 415W produces 212.5 watts per square meter of panel area while the Aptos Solar DNA-108-MF10 415W produces 212.5 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
Both panels are rated at 415W under standard test conditions (STC), requiring 20 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
The Aptos Solar DNA-108-MF10 415W has a temperature coefficient of -0.32%/°C versus -0.34%/°C for the JA Solar JAM54S31 415W. On a hot summer day when cell temperature reaches 65°C (40°C above the 25°C STC baseline), the Aptos Solar DNA-108-MF10 415W retains 93.6% of its rated power while the other retains 93.2%. While the numerical gap is modest, it still accumulates over decades of summer production, especially in southern latitudes with prolonged peak heat hours.
Warranty Coverage
The JA Solar JAM54S31 415W is backed by a 12-year product warranty and 25-year performance guarantee, while the Aptos Solar DNA-108-MF10 415W offers 30-year product and 30-year performance coverage. The Aptos Solar DNA-108-MF10 415W provides 18 additional years of defect protection, covering manufacturing issues, material failures, and premature performance loss. Based on their published degradation rates (1.5% first year then 0.5%/year for JA Solar JAM54S31 415W; 1% first year then 0.54%/year for Aptos Solar DNA-108-MF10 415W), after 25 years the JA Solar JAM54S31 415W should retain approximately 86.5% of original output versus 86.0% for the Aptos Solar DNA-108-MF10 415W. The end-of-life output levels are closely matched.
Physical Dimensions & Weight
The JA Solar JAM54S31 415W measures 1722×1134×30mm and weighs 21.5 kg, while the Aptos Solar DNA-108-MF10 415W measures 1722×1134×35mm at 21.5 kg. 1.95 m² of panel area for the JA Solar JAM54S31 415W versus 1.95 m² for the Aptos Solar DNA-108-MF10 415W. 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 | JA Solar JAM54S31 415W | Aptos Solar DNA-108-MF10 415W |
|---|---|---|
| Power | 415W | 415W |
| Efficiency | 21.5% | 21.25% |
| Power Density | 19.7 W/sq ft | 19.7 W/sq ft |
| Cell Type | PERC Mono | PERC Mono |
| Bifacial | No | No |
| Weight | 21.5 kg | 21.5 kg |
| Temp Coefficient | -0.34%/°C | -0.32%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 2400 Pa | 4000 Pa |
| Product Warranty | 12 years | 30 years |
| Performance Warranty | 25 years | 30 years |
| Degradation (Year 1) | 1.5% | 1% |
| Annual Degradation | 0.5% | 0.54% |
| Country | China | Vietnam |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: JA Solar JAM54S31 415WThe JA Solar JAM54S31 415W achieves 21.5% efficiency versus 21.25% — a 0.3 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 0.0 kW more total system capacity, or 0 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: Aptos Solar DNA-108-MF10 415WThe Aptos Solar DNA-108-MF10 415W has a better temperature coefficient of -0.32%/°C versus -0.34%/°C. On a 45°C summer day (20°C above STC), the winner retains 93.6% of rated power versus 93.2%. The difference is modest but accumulates over 25 years of summer production.
3. Durability & Warranty
Winner: Aptos Solar DNA-108-MF10 415WAptos Solar DNA-108-MF10 415W leads with a 30-year product warranty versus 12 years. JA Solar JAM54S31 415W degrades more slowly at 0.5% per year versus 0.54%. After 25 years, expect 86.5% vs 86.0% of original output for JA Solar JAM54S31 415W and Aptos Solar DNA-108-MF10 415W respectively.
4. Power Output
Winner: TieBoth panels deliver 415W — identical power output per panel. System cost per watt will be the deciding factor.
5. Cell Technology
Winner: TieBoth panels use PERC Mono cell technology. No technology advantage for either product.
JA Solar JAM54S31 415W
The JAM54S31 is a compact residential PERC panel delivering 415W with a solid balance of performance and affordability.
Pros
- + Compact residential form factor
- + Good price-performance ratio
- + Widely available
- + Proven reliability
Cons
- - Lower efficiency vs N-type
- - Higher degradation rate
- - Standard warranty
Aptos Solar DNA-108-MF10 415W
Aptos Solar DNA-108-MF10 is a 415W residential panel using patented DNA PERC technology with 108 half-cut cells and 10 ultra-thin busbars for high efficiency in a compact all-black design.
Pros
- + Compact 108-cell format ideal for residential rooftops
- + 30-year product and performance warranty
- + All-black aesthetic with high 21.25% efficiency
- + Lightweight at 21.5 kg for easy installation
Cons
- - PERC technology vs newer TOPCon alternatives
- - Lower wattage limits large system designs
- - No bifacial energy gain
Choose JA Solar JAM54S31 415W If...
- ✓ Your roof space is limited and you need maximum power per panel
- ✓ You want maximum output retention over the system's 25-30 year lifespan
- ✓ Budget residential installations seeking reliable PERC performance.
Choose Aptos Solar DNA-108-MF10 415W If...
- ✓ Long-term warranty protection is a top priority and you plan to stay in your home for 30+ years
- ✓ You live in a hot climate (Arizona, Texas, Florida) where heat performance matters
- ✓ Homeowners seeking a compact, aesthetically pleasing panel with strong warranty coverage for residential rooftop installations.
Our Recommendation
The Aptos Solar DNA-108-MF10 415W is the decisive winner in this solar panel comparison, outperforming the JA Solar JAM54S31 415W in 2 of 5 dimensions. Unless you have a specific requirement that the JA Solar JAM54S31 415W uniquely addresses, the Aptos Solar DNA-108-MF10 415W is the stronger choice for virtually every installation scenario.
Frequently Asked Questions
Which is better, JA Solar JAM54S31 415W or Aptos Solar DNA-108-MF10 415W?
The Aptos Solar DNA-108-MF10 415W wins this comparison by a decisive margin. It offers better long-term durability with 30-year warranty. For most residential installations, the Aptos Solar DNA-108-MF10 415W is the stronger choice.
Which panel is more efficient, JA Solar JAM54S31 415W or Aptos Solar DNA-108-MF10 415W?
The JA Solar JAM54S31 415W at 21.5% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 0.3 percentage points translates to approximately 0W per panel under standard test conditions.
Which has a better warranty, JA Solar JAM54S31 415W or Aptos Solar DNA-108-MF10 415W?
The JA Solar JAM54S31 415W comes with a 12-year product warranty and 25-year performance guarantee. The Aptos Solar DNA-108-MF10 415W offers 30-year product and 30-year performance warranties. Aptos Solar DNA-108-MF10 415W provides 18 additional years of product coverage.
Which panel performs better in hot weather?
The JA Solar JAM54S31 415W has a temperature coefficient of -0.34%/°C and the Aptos Solar DNA-108-MF10 415W is -0.32%/°C. Aptos Solar DNA-108-MF10 415W retains more power in heat — important in states like Arizona, Texas, and Florida. A lower (less negative) temperature coefficient is better.
How many JA Solar JAM54S31 415W vs Aptos Solar DNA-108-MF10 415W panels do I need for an 8 kW system?
For an 8 kW system: you need 20 JA Solar JAM54S31 415W panels (415W each) or 20 Aptos Solar DNA-108-MF10 415W panels (415W each). Both require the same number of panels.
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Last updated: February 2026