The LUMOPAL 60W Foldable Solar Panel Charger (LUM SOLAR 60) is the better portable solar panel overall, rated 4.2 to 3.9. The LUMOPAL 60W Foldable Solar Panel Charger (LUM SOLAR 60) leads on portability and efficiency. The SinKeu 40W Foldable Solar Panel costs $14 less ($45.99 vs $59.99).
A light backpacking panel for charging a laptop, phone or small power station directly over USB-C. Too small for refilling a mid-size or large power station.
Amazon $59.99A small, cheap panel for keeping phones, tablets and a small power station topped up on hikes or short trips. Anyone charging a mid-size station should look at 100 W and up.
Amazon $45.99Prices 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 small portable solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | LUMOPAL 60W Foldable Solar Panel Charger (LUM SOLAR 60) | SinKeu 40W Foldable Solar Panel |
|---|---|---|
| Overall rating | 4.2/5 | 3.9/5 |
| Value 30% | 100 $1.00 per rated watt | 100 $1.15 per rated watt |
| Tested output 20% | 89 not yet tested; estimated 87% of rated watts from the median of the 10 tested panels | 89 not yet tested; estimated 87% of rated watts from the median of the 10 tested panels |
| Portability 15% | 97 17.6 W per lb (3.4 lb (1.5 kg)) | 51 12.1 W per lb (3.3 lb (1.5 kg)) |
| Durability 15% | 36 IP65, 1-year warranty | 50 IP rating and warranty not published (neutral score used) |
| Efficiency 10% | 75 23.5% claimed efficiency | 50 22% claimed efficiency |
| Features 10% | 20 USB output | 20 USB output |
| LUMOPAL 60W Foldable Solar Panel Charger (LUM SOLAR 60) | SinKeu 40W Foldable Solar Panel | |
|---|---|---|
| Output | ||
| Rated power | 60 W | 40 W |
| Tested output | Not tested (estimated 87%) | Not tested (estimated 87%) |
| Efficiency | 23.5% ("up to" conversion rate per the Amazon listing, which does not say cell or module) | 22% ("up to" per the Amazon listing, not stated as cell or module) |
| Cells | Monocrystalline | Monocrystalline |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 23 V | - |
| Voltage at max power (Vmp) | 20 V | - |
| Short-circuit current (Isc) | 3.9 A | - |
| Current at max power (Imp) | 3.5 A | - |
| Connections | ||
| Output connector | DC5521 | - |
| Cables included | 5521 DC cable, DC connector kit (includes XT60) | DC-to-DC cable, 10-in-1 DC connector set |
| USB ports | 1x USB-C PD (up to 60W, 5-20V/3A), 2x USB-A QC3.0 (up to 22W); no USB-C cable included; the junction ports are not waterproof | 1x USB-C (5V/3A, 9V/3A, 12V/2.5A, 15V/2A), 1x USB-A QC3.0 (5V/3A, 9V/2A, 12V/1.5A), plus an 18 V DC output |
| Build | ||
| Weight | 3.4 lb (1.5 kg) | 3.3 lb (1.5 kg) |
| Folded size | 11 x 8.46 x 2.36 in | 12.6 x 9.1 x 2 in |
| Unfolded size | 53.5 x 11 x 0.2 in | 37.8 x 12.6 x 0.2 in |
| Water resistance | IP65 | - |
| Warranty | 1 years | - |
