JA Solar DeepBlue 4.0 440W Bifacial
#2 in 150 W and upFull review
A well-priced all-black bifacial rooftop panel from a top-tier maker for a home grid-tie system bought as a full set.
US Solar Supplier $189$189
4.7/5
A low-cost all-black rooftop panel with an unusually long 30-year product warranty, for a home system bought as a full set of panels.
- 440 WRated output
- $0.43Price / W
- 39 VOpen-circuit voltage
- 46.3 lbWeight
- 30 yearsWarranty
Check price at Signature Solar$189.20
Price checked October 26, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 30-year product warranty, longer than most rooftop panels
- Cheap for a residential N-type panel at about 43 cents a watt
- Miami-Dade approved and rated 5400 Pa wind load with clamps, for hurricane-prone areas
Cons
- Sold only in lots of 10 or more at the store we found
- Its output warranty allows more yearly loss than most rivals here (82.9% at year 30)
- A smaller brand than Qcells or Canadian Solar, so the long warranty depends on a younger company
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | DNA-108-MFN10-440W |
|---|---|
| Output | |
| Rated power | 440 W |
| Module efficiency | 22.5% |
| Claimed efficiency | 22.5% (module efficiency from the datasheet; Aptos publishes no headline figure (the 450 W version is 23.04%)) |
| Cells | Monocrystalline (N-type, 108 split (half) cells, Aptos DNA) |
| Bifacial | No |
| Electrical | |
| Open-circuit voltage (Voc) | 39 V |
| Voltage at max power (Vmp) | 33.5 V |
| Short-circuit current (Isc) | 13.7 A |
| Current at max power (Imp) | 13.2 A |
| Voc temperature coefficient | -0.2%/°C |
| Series / parallel | Yes |
| Connections | |
| Output connector | Stäubli EVO2 |
| Build | |
| Weight | 46.3 lb (21 kg) |
| Dimensions | 67.7 x 44.6 x 1.3 in |
| Frame | anodized aluminum alloy |
| Glass | 3.2 mm anti-reflection, low-iron tempered |
| Junction box rating | IP68 |
| Warranty | 30 years |
| Output warranty | 30 years; Aptos's standard module warranty (April 2023) allows 2% loss in year 1 and 0.54% a year after, 82.9% at year 30 |
Alternatives in this size
Trina Vertex S+ 16020W (36 x 445W) Pallet
#3 in 150 W and upFull review
A very cheap pallet of black-framed rooftop-size panels for a large ground-mount or off-grid array where a UL or CEC listing isn’t needed.
US Solar Supplier $5,499.99$5,499.99
Hyundai HiN-T440NF(BK) 440W Bifacial
#4 in 150 W and upFull review
A solid all-black bifacial rooftop panel from a big-name maker for a home system of 10 or more panels, at a mid-range price per watt.
A1 SolarStore $207.66 Signature Solar $228.80$207.66
Compare
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