The ECO-WORTHY 400W (4 x 100W) 4-Pack is the better rigid solar panel overall, rated 4.2 to 4.0. The ECO-WORTHY 400W (4 x 100W) 4-Pack leads on value. The Renogy 400W (2 x 200W) 2-Pack wins on durability. The ECO-WORTHY 400W (4 x 100W) 4-Pack costs $139.35 less ($195.99 vs $335.34).
A cheap way to put 400 W on an RV, boat or shed roof where smaller panels fit better than large ones. Buyers who want full published specs and a stated warranty pay a little more for HQST’s 400 W pair.
Amazon $195.99A simple way to buy 400 W of Renogy’s 200 W panel for an RV roof, shed or ground mount with an MPPT controller. Compare it with two singles first, since the pack is not always cheaper.
Amazon $335.34Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
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 | ECO-WORTHY 400W (4 x 100W) 4-Pack | Renogy 400W (2 x 200W) 2-Pack |
|---|---|---|
| Overall rating | 4.2/5 | 4.0/5 |
| Value 45% | 96 $0.49 per rated watt | 63 $0.84 per rated watt |
| Tested output 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Durability 25% | 40 IP68 | 84 IP65, 10-year warranty |
| Efficiency 15% | 100 25% claimed efficiency | 100 25% claimed efficiency |
| ECO-WORTHY 400W (4 x 100W) 4-Pack | Renogy 400W (2 x 200W) 2-Pack | |
|---|---|---|
| Output | ||
| Rated power | 400 W | 400 W |
| Efficiency | 25% ("up to"; the listing does not say whether this is cell or module efficiency) | 25% (cell efficiency; datasheet module efficiency 20.7%) |
| Cells | Monocrystalline (N-type, 16BB) | Monocrystalline (N-type, 16BB) |
| Bifacial | Yes | No |
| Electrical | ||
| Open-circuit voltage (Voc) | - | 37.4 V |
| Voltage at max power (Vmp) | - | 31 V |
| Short-circuit current (Isc) | - | 6.8 A |
| Current at max power (Imp) | - | 6.5 A |
| Voc temperature coefficient | - | -0.3%/°C |
| Series / parallel | - | Yes |
| Connections | ||
| Output connector | MC4 | Solar connectors (IP67) |
| Build | ||
| Dimensions | 35.63 x 23.03 x 1.18 in (each panel) | 49.7 x 30.1 x 1.2 in (each panel) |
| Frame | anodized aluminum | anodized aluminum alloy |
| Glass | low-iron glass | 3.2 mm tempered |
| Junction box rating | IP68 | IP65 |
| Warranty | - | 10 years |
| Output warranty | - | 95% output for 5 years, 90% for 10 years, 80% for 25 years |
| Released | 2026-02 | 2025-08 |
