The ECO-WORTHY 400W (4 x 100W) 4-Pack is the better rigid solar panel overall, rated 4.2 to 3.8. The ECO-WORTHY 400W (4 x 100W) 4-Pack leads on value. The ECO-WORTHY 400W (4 x 100W) 4-Pack costs $58.78 less ($195.99 vs $254.77).
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 low-cost large panel for a shed, greenhouse or ground mount with an MPPT controller. Buyers who want a stated warranty and full spec sheet should pay a little more for a better-documented brand.
Amazon $254.77Prices 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 | DOKIO 400W Rigid |
|---|---|---|
| Overall rating | 4.2/5 | 3.8/5 |
| Value 45% | 96 $0.49 per rated watt | 82 $0.64 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 | 50 IP rating and warranty not published (neutral score used) |
| Efficiency 15% | 100 25% claimed efficiency | 50 efficiency not published (neutral score used) |
| ECO-WORTHY 400W (4 x 100W) 4-Pack | DOKIO 400W Rigid | |
|---|---|---|
| Output | ||
| Rated power | 400 W | 400 W |
| Efficiency | 25% ("up to"; the listing does not say whether this is cell or module efficiency) | - |
| Cells | Monocrystalline (N-type, 16BB) | Monocrystalline |
| Bifacial | Yes | No |
| Electrical | ||
| Open-circuit voltage (Voc) | - | 37.1 V |
| Voltage at max power (Vmp) | - | 31 V |
| Short-circuit current (Isc) | - | 13.2 A |
| Series / parallel | - | Yes |
| Connections | ||
| Output connector | MC4 | MC4 |
| Build | ||
| Weight | - | 49.4 lb (22.4 kg) |
| Dimensions | 35.63 x 23.03 x 1.18 in (each panel) | 67.8 x 44.6 x 1.2 in |
| Frame | anodized aluminum | aluminum |
| Glass | low-iron glass | tempered |
| Junction box rating | IP68 | - |
| Released | 2026-02 | - |
