The ZOUPW 480W Bifacial (DS480W) is the better portable solar panel overall, rated 4.5 to 4.2. The ZOUPW 480W Bifacial (DS480W) leads on durability. The Renogy 400W Blanket costs $80 less ($469.99 vs $549.99).
A light, high-wattage bifacial panel for owners of large power stations with a 50 V-plus solar input, especially over reflective ground. Owners of small or low-voltage stations should look elsewhere.
Amazon $549.99For van, truck and SUV campers who want 400 W from something that stows like a backpack. Owners of small power stations should check the voltage limit, and anyone who wants to prop a panel up on legs should look at a folding suitcase panel instead.
Amazon $469.99Prices 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 large portable solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | ZOUPW 480W Bifacial (DS480W) | Renogy 400W Blanket |
|---|---|---|
| Overall rating | 4.5/5 | 4.2/5 |
| Value 30% | 77 $1.15 per rated watt | 76 $1.17 per rated watt |
| Tested output 20% | 100 not yet tested; estimated 92% of rated watts from 1 test of ZOUPW panels and the median of the 11 tested panels | 100 not yet tested; estimated 91% of rated watts from 2 tests of Renogy panels and the median of the 11 tested panels |
| Portability 15% | 100 21.3 W per lb (22.5 lb (10.2 kg)) | 100 24.9 W per lb (16.1 lb (7.3 kg)) |
| Durability 15% | 100 IP68, 3-year warranty | 56 IP65, 2-year warranty |
| Efficiency 10% | 100 25.6% claimed efficiency | 100 25% claimed efficiency |
| Features 10% | 25 bifacial | 20 series/parallel |
| ZOUPW 480W Bifacial (DS480W) | Renogy 400W Blanket | |
|---|---|---|
| Output | ||
| Rated power | 480 W | 400 W |
| Tested output | Not tested (estimated 92%) | Not tested (estimated 91%) |
| Efficiency | 25.6% (ZOUPW's 'up to 25.6%' figure, not stated as cell or module; the Amazon listing says 25%+) | 25% (cell efficiency as quoted by Renogy and on the Amazon listing; the manual gives no efficiency figure) |
| Cells | Monocrystalline (N-type, 16BB, 182 mm cells) | Monocrystalline (N-type, 16BB) |
| Bifacial | Yes, up to 144 W more from the back | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 49.3 V | 39.2 V |
| Voltage at max power (Vmp) | 42.5 V | 33.6 V |
| Short-circuit current (Isc) | 12 A | 13.1 A |
| Current at max power (Imp) | 11.3 A | 11.9 A |
| Series / parallel | - | Yes |
| Connections | ||
| Output connector | - | MC4 |
| Cables included | 13 ft 12AWG solar extension cable, 2 ft 12AWG 4-in-1 adapter cable (DC7909 with DC8020 adapter, XT60, Anderson) | - |
| USB ports | - | None |
| Build | ||
| Weight | 22.5 lb (10.2 kg) | 16.1 lb (7.3 kg) |
| Folded size | 34.65 x 32.56 x 3.35 in (880 x 827 x 85 mm) | 16.54 x 15.83 x 4.13 in |
| Unfolded size | 138.58 x 32.56 x 0.87 in (3520 x 827 x 22 mm) | 64.96 x 62.99 x 1.50 in |
| Water resistance | IP68 | IP65 |
| Warranty | 3 years | 2 years |
| Released | 2026-03 | 2025-04 |
