Aptos DNA-108 N-Type 440
#1 in 150 W and upFull review
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.
Signature Solar $189.20$189.20
The Aptos DNA-108 N-Type 440 and the JA Solar DeepBlue 4.0 440W Bifacial are evenly matched, rated 4.7 and 4.7.
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
Prices were last checked October 26, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 150 W and up rigid solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | Aptos DNA-108 N-Type 440 | JA Solar DeepBlue 4.0 440W Bifacial |
|---|---|---|
| Overall rating | 4.7/5 | 4.7/5 |
| Value 45% | 100 $0.43 per rated watt | 100 $0.43 per rated watt |
| Tested output 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Durability 25% | 100 IP68, 30-year warranty | 100 IP68, 25-year warranty |
| Efficiency 15% | 91 22.5% module efficiency | 90 22.5% module efficiency |
Specifications
| Aptos DNA-108 N-Type 440 | JA Solar DeepBlue 4.0 440W Bifacial | |
|---|---|---|
| Output | ||
| Rated power | 440 W | 440 W |
| Module efficiency | 22.5% | 22.5% |
| Claimed efficiency | 22.5% (module efficiency from the datasheet; Aptos publishes no headline figure (the 450 W version is 23.04%)) | 22.5% (module efficiency of the 440 W version, from the datasheet (JA quotes up to 26% for the cells alone)) |
| Cells | Monocrystalline (N-type, 108 split (half) cells, Aptos DNA) | Monocrystalline (N-type Bycium+ TOPCon, 108 half-cut bifacial cells, 16 busbars) |
| Bifacial | No | Yes |
| Electrical | ||
| Open-circuit voltage (Voc) | 39 V | 39.4 V |
| Voltage at max power (Vmp) | 33.5 V | 33.4 V |
| Short-circuit current (Isc) | 13.7 A | 13.8 A |
| Current at max power (Imp) | 13.2 A | 13.2 A |
| Voc temperature coefficient | -0.2%/°C | -0.2%/°C |
| Series / parallel | Yes | Yes |
| Connections | ||
| Output connector | Stäubli EVO2 | QC 4.10-351 or MC4-EVO2 |
| Build | ||
| Weight | 46.3 lb (21 kg) | 47.4 lb (21.5 kg) |
| Dimensions | 67.7 x 44.6 x 1.3 in | 67.8 x 44.6 x 1.18 in |
| Frame | anodized aluminum alloy | black, 30 mm deep |
| Glass | 3.2 mm anti-reflection, low-iron tempered | 1.6 mm front and rear (dual glass) |
| Junction box rating | IP68 | IP68 |
| Warranty | 30 years | 25 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 | 30 years: no more than 1% loss in year 1, then no more than 0.4% a year (87.4% at 30 years) |