A cheap, independently tested 400 W pair for a van, RV or shed on a budget. JJN’s newer N-type 2-pack costs a little more but comes with a full spec sheet and a stated warranty.
Amazon $215.99
A good fit for a tilted ground mount or a light-colored roof, where the bifacial back earns its keep. Pair it with an MPPT controller.
- 200 WRated output
- $0.90Price / W
- 36.4 VOpen-circuit voltage
- 22.5 lbWeight
- 10 yearsWarranty
Price checked October 26, 2026. As an Amazon Associate we earn from qualifying purchases.
- Clear back picks up reflected light, so a tilted ground mount or a pale roof gets extra output
- IP68 junction box, sealed better than the IP65 boxes common on budget panels
- 10-year workmanship warranty, double the usual 5 years
- A 24 V-class panel: charging a 12 V battery needs an MPPT controller, not a cheap PWM one
- Bifacial gain is small when the panel lies flat on a dark RV roof
- No independent output test yet
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
| Output | |
|---|---|
| Rated power | 200 W |
| Module efficiency | 20.2% (rated power over panel area) |
| Claimed efficiency | 25% (cell efficiency; module efficiency not published) |
| Cells | Monocrystalline (N-type TOPCon, 16BB, 104 cells) |
| Bifacial | Yes |
| Electrical | |
| Open-circuit voltage (Voc) | 36.4 V |
| Voltage at max power (Vmp) | 31.7 V |
| Short-circuit current (Isc) | 6.6 A |
| Current at max power (Imp) | 6.3 A |
| Voc temperature coefficient | -0.2%/°C |
| Connections | |
| Output connector | MC4, 3 ft 14 AWG leads |
| Build | |
| Weight | 22.5 lb (10.2 kg) |
| Dimensions | 50.7 x 30.2 x 1.4 in |
| Frame | anodized aluminum alloy |
| Glass | 3.2 mm tempered |
| Junction box rating | IP68 |
| Warranty | 10 years |
| Output warranty | 30-year linear power output warranty |
| Released | 2024-04 |
Alternatives in this size
A 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 $335.34A 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 $254.77Compare
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