Qcells Q.TRON vs JA Solar DeepBlue 4.0 Pro
Reassuring brand against rock-bottom price, at equal power.
Q.TRON 440
TOPCon- Power
- 440 Wp
- Efficiency
- 22.5 %
- Warranty
- 25 years
- Heat tolerance
- -0.28 %/°C
DeepBlue 4.0 Pro 440
TOPCon- Power
- 440 Wp
- Efficiency
- 22.5 %
- Warranty
- 12 years
- Heat tolerance
- -0.29 %/°C
Both at 440 Wp, the Qcells Q.TRON wins on peace of mind: 25-year product warranty (against 12) and a highly reputable brand. The JA Solar DeepBlue 4.0 Pro stays unbeatable on budget, an excellent choice if you accept a shorter product warranty.
Detailed comparison
| Criterion |  Qcells Q.TRON 440 87 |  JA Solar DeepBlue 4.0 Pro 440 85 |
|---|---|---|
| Power | 440 Wpbest | 440 Wp |
| Efficiency | 22.5 %best | 22.5 % |
| Indicative price | €149 | €115best |
| Product warranty | 25 yearsbest | 12 years |
| Performance warranty | 25 years | 30 yearsbest |
| Weight | 21.5 kgbest | 21.5 kg |
| Temperature coefficient | -0.28 %/°Cbest | -0.29 %/°C |
| Cell type | TOPCon | TOPCon |
| Performance | ||
| Durability | ||
| Value for money | ||
| Warranty | ||
| Buy |
Efficiency & performance
Both models offer 22.5% efficiency. The difference then comes down to heat tolerance (Qcells: -0.28%/°C, JA Solar: -0.29%/°C) and durability.
Price & profitability (ROI)
At the indicative price, the JA Solar DeepBlue 4.0 Pro 440 (€115) is cheaper than the Qcells Q.TRON 440 (€149). Per watt, it is this cost per Wp, combined with real output and warranty length, that drives the payback. A slightly pricier but better-warrantied and more efficient model can be more profitable over 25 years. savings simulator.
Qcells Q.TRON 440
Strengths
- Reputable, reassuring brand
- 25-year product + performance warranty
- Good behaviour in low light
Worth noting
- Variable availability
- Upper-mid efficiency
JA Solar DeepBlue 4.0 Pro 440
Strengths
- Very good price
- Dual-glass bifacial TOPCon
- High mechanical loads (5400 Pa)
Worth noting
- Short product warranty (12 years)
- Average temperature coefficient
Frequently asked questions
Qcells Q.TRON 440 or JA Solar DeepBlue 4.0 Pro 440: which to choose?
Our recommendation goes to the Qcells Q.TRON 440. Both at 440 Wp, the Qcells Q.TRON wins on peace of mind: 25-year product warranty (against 12) and a highly reputable brand. The JA Solar DeepBlue 4.0 Pro stays unbeatable on budget, an excellent choice if you accept a shorter product warranty.
Which has the better efficiency, Qcells or JA Solar?
Both models offer the same 22.5% efficiency.
What is the price difference between the two?
The JA Solar DeepBlue 4.0 Pro 440 is cheaper (€115 against €149 per panel, indicative prices).
What warranties for Qcells Q.TRON 440 and JA Solar DeepBlue 4.0 Pro 440?
The Qcells Q.TRON 440 is warrantied 25 years (product) and 25 years (performance). The JA Solar DeepBlue 4.0 Pro 440 is warrantied 12 years (product) and 30 years (performance).