JA Solar
JA Solar DeepBlue 4.0 Pro
B4.3 440W
Tier-1 N-type TOPCon panel offering a strong balance of efficiency, reliability and price.
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Specifications
| Power | 445 W |
|---|---|
| Efficiency | 22.8 % |
| Cell technology | N-type TOPCon |
| Type | Monocrystalline |
| Warranty | 25 yrs |
Our verdict
A dependable mainstream choice that most installers can source easily, with efficiency close to premium panels at a lower price. The safe, widely-available pick.
Pros
- Great value
- Widely stocked by UK installers
- Solid N-type performance
Cons
- Not the absolute highest efficiency
- Shorter product warranty than some rivals