SUNGOLDPOWER 1800W (4 x 450W) 4-Pack
#21 in 150 W and upFull review
A budget 4-pack of large 450 W panels for a home roof, shed or ground-mount array on a 24 V or 48 V MPPT system. Too big for RVs and vans.
Amazon $1,250$1,250
The SUNGOLDPOWER 1800W (4 x 450W) 4-Pack is the better rigid solar panel overall, rated 4.1 to 3.8. The DOKIO 800W (2 x 400W) 2-Pack costs $760.23 less ($489.77 vs $1,250).
DOKIO 800W (2 x 400W) 2-Pack
#36 in 150 W and upFull review
A low-cost way to put 800 W on a shed roof or ground mount with an MPPT controller. Buyers who want a stated warranty and a full spec sheet should pay a little more for a better-documented brand.
Amazon $489.77$489.77
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 | SUNGOLDPOWER 1800W (4 x 450W) 4-Pack | DOKIO 800W (2 x 400W) 2-Pack |
|---|---|---|
| Overall rating | 4.1/5 | 3.8/5 |
| Value 45% | 77 $0.69 per rated watt | 85 $0.61 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, 12-year warranty | 50 IP rating and warranty not published (neutral score used) |
| Efficiency 15% | 56 20.8% module efficiency (from size and rated power) | 50 20.5% module efficiency (from size and rated power) |
Specifications
| SUNGOLDPOWER 1800W (4 x 450W) 4-Pack | DOKIO 800W (2 x 400W) 2-Pack | |
|---|---|---|
| Output | ||
| Rated power | 1,800 W | 800 W |
| Module efficiency | 20.8% (rated power over panel area) | 20.5% (rated power over panel area) |
| Claimed efficiency | 20.8% (module efficiency) | - |
| Cells | Monocrystalline (PERC, 120 half-cut 182 mm cells) | Monocrystalline |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 41.7 V | 37.1 V |
| Voltage at max power (Vmp) | 34.2 V | 31 V |
| Short-circuit current (Isc) | 13.8 A | 13.2 A |
| Current at max power (Imp) | 13.2 A | - |
| Voc temperature coefficient | -0.3%/°C | - |
| Series / parallel | Yes | Yes |
| Connections | ||
| Output connector | - | MC4 |
| Build | ||
| Weight | 54 lb (24.5 kg) | - |
| Dimensions | 75.16 x 44.65 x 1.38 in (each panel) | 67.8 x 44.6 x 1.2 in (each panel) |
| Frame | anodized aluminum alloy | aluminum |
| Glass | 3.2 mm tempered | tempered |
| Junction box rating | IP68 | - |
| Warranty | 12 years | - |
| Output warranty | 95% output at 5 years, 90% at 10 years, 80% at 25 years | - |
| Released | 2022-12 | - |