The TWELSEAVAN 150W HPBC Portable Solar Panel is the better portable solar panel overall, rated 4.5 to 3.6. The TWELSEAVAN 150W HPBC Portable Solar Panel leads on value, portability and durability. The TWELSEAVAN 150W HPBC Portable Solar Panel costs $199.01 less ($149.99 vs $349).
A light, compact 150 W panel for small and mid-size power stations on camping trips. Buyers who plan to chain panels together should pick one that supports it.
Amazon $149.99A compact panel for owners of smaller EcoFlow RIVER-class stations who value a light carry over maximum output. If the price gap to the 220 W bifacial is small, the bigger panel is the better buy.
Amazon $349 EcoFlow $369Prices were last checked October 21, 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 mid-size portable solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | TWELSEAVAN 150W HPBC Portable Solar Panel | EcoFlow NextGen 160W Portable Solar Panel |
|---|---|---|
| Overall rating | 4.5/5 | 3.6/5 |
| Value 30% | 95 $1.00 per rated watt | 39 $2.18 per rated watt |
| Tested output 20% | 89 not yet tested; estimated 87% of rated watts from the median of the 10 tested panels | 81 not yet tested; estimated 84% of rated watts from 2 tests of EcoFlow panels and the median of the 10 tested panels |
| Portability 15% | 99 17.9 W per lb (8.4 lb (3.8 kg)) | 58 13.0 W per lb (12.3 lb (5.6 kg)) |
| Durability 15% | 76 IP65, 3-year warranty | 60 IP68, 1-year warranty |
| Efficiency 10% | 100 25.8% claimed efficiency | 100 25% claimed efficiency |
| Features 10% | 35 built-in kickstand | 35 built-in kickstand |
| TWELSEAVAN 150W HPBC Portable Solar Panel | EcoFlow NextGen 160W Portable Solar Panel | |
|---|---|---|
| Output | ||
| Rated power | 150 W | 160 W |
| Tested output | Not tested (estimated 87%) | Not tested (estimated 84%) |
| Efficiency | 25.8% (cell efficiency, listed as 'up to 25.8%' on the Amazon listing) | 25% (EcoFlow lists 25.00% efficiency without saying whether it is cell or module efficiency) |
| Cells | - | Monocrystalline (N-type TOPCon) |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 25.2 V | 21.3 V |
| Voltage at max power (Vmp) | 21.6 V | 18.6 V |
| Short-circuit current (Isc) | 7.4 A | 9.1 A |
| Current at max power (Imp) | 6.9 A | 8.6 A |
| Series / parallel | No | - |
| Connections | ||
| Output connector | MC4 | MC4 |
| Cables included | 9.8 ft 5-in-1 MC4 cable (Anderson, XT60i, DC8020, DC7909, DC5521), 3 DC adapters | MC4 to XT60i |
| USB ports | - | None |
| Build | ||
| Weight | 8.4 lb (3.8 kg) | 12.3 lb (5.6 kg) |
| Folded size | 25.9 x 23.2 x 0.9 in | 23.6 x 22.5 x 1.3 in |
| Unfolded size | 52.1 x 23.2 x 0.2 in | 23.6 x 63.4 x 1.0 in |
| Kickstand | Yes | Yes |
| Water resistance | IP65 | IP68 |
| Warranty | 3 years | 1 years |
