






☀️ Power your wanderlust with FlexSolar — never miss a charge, no matter where life takes you!
The FlexSolar 40W Solar Panel is a portable, foldable charger featuring dual USB outputs (USB-C PD2.0 and USB-A QC3.0) capable of delivering up to 18W each. Crafted with high-efficiency Grade A+ monocrystalline silicon cells, it achieves a 24% solar conversion rate. Its rugged IP67 waterproof and dustproof ETFE-laminated design ensures durability in harsh outdoor environments. Lightweight at 3.3 lbs and compact when folded, it’s optimized for camping, hiking, and emergency power needs, with smart auto-restart technology to maintain consistent charging under variable sunlight.















| ASIN | B0C4H768QJ |
| Amperage Capacity | 2.9 Amps |
| Best Sellers Rank | 47 in Mobile Phone Solar Chargers |
| Brand | FlexSolar |
| Connector Type | USB |
| Country of Origin | China |
| Customer Reviews | 3.9 out of 5 stars 268 Reviews |
| Efficiency | 24% |
| Folded Knife Size | 304 x 248 x 18.8 mm |
| Included Components | Instruction Manual |
| Included components | Instruction Manual |
| Item Dimensions L x W x H | 91.2L x 9.8W x 0.7H centimetres |
| Item Weight | 1300 Grams |
| Item height | 0.7 centimetres |
| Item weight | 1300 Grams |
| Manufacturer | FlexSolar |
| Material | Monocrystalline Silicon |
| Maximum Power | 40 Watts |
| Maximum Voltage | 13.9 Volts |
| Model Number | HD-S40-DE |
| Product dimensions | 91.2L x 9.8W x 0.7H centimetres |
| Unit Count | 1.0 count |
| Upper Temperature Rating | 65 Degrees Celsius |
M**.
It works ok not fast.
It does the job but very slow.
C**M
Unsure about small portable solar power? Don’t be.
The physical size of a laptop, got stopped at airport security but had no issues once they knew what it was. Cracking unit to charge powerbanks & small electronic devices. 20,000 Mha batt pack takes about 5 hours. iPad was mostly charged after a couple of hours from 11% Panels work best out in the open, not behind glass windows. Super product when discounted offer is available.
R**R
Broken after just a few uses
This is a great solar panel when it comes to fast charging. Works well and even in cloudy conditions. Looks great and Packs really well as well. But... On the inside it's a cheap poor manufactured product. I am on my second panel and both of them broke just after several uses. Apparently where they fold, there's a circuit misconection which comes apart and now it works only after loads of fiddling it in awkward positions. It looks like it's a common defect from other reviews, so. It's just poor design /manufacturing on the inside.
P**C
FlexSolar 40W Solar Panel
Could not quite give it 5 stars. While I think it is good. Think a little overpriced and a few things needed like clasp for closing or a little storage etc. First this is the newer Flexsolar 40w as have noticed it is easy in these reviews to get the wrong info. Seems a mix of the 40w's and the 60 & 80w. They are all diffrent and made differently. They always ask for reviews as soon as you receive, but need to leave a while. With my limited time I have had it, a couple of months. It is brilliant and does all I want. Charging small items. This came quickly and a replacement for the older 40w version of solar panel i accidentally ordered. So be careful when ordering as easy to buy the wrong one, especially when going back and forth comparing. It’s charges my phones, power banks, camping lights, torches or any small/medium sized rechargable device for that matter. I am very pleased with this Solar pad. Definitely a must have. Tried it in overcast weather here in the uk and it charged power banks and phones quite quickly still. Seems well built and folds down to a nice size, about laptop size. But could do with a closing clip or velcro tab. Overall, 40w, small, light and easy to pack away. Charges phones and power banks quickly on a bright day and slower obviously on overcast. But early days and will keep posted if any change.
J**T
Solar panel
As described.
C**B
Seems well built
Bought for a trip almost off grid to Africa this summer so we can charge power banks during the day to charge phones at night. Tried it in overcast weather in the uk and it charged the power bank quite quickly. Seems well built and folds down to a nice size.
M**S
Excellent product
It’s charges my phones and power pads. I am very pleased with this Solar pad. Definitely a must have.
R**N
Not built to last.
Worked for three months now the 'power' light won't stay on. Has not been mistreated etc. No returns support offered by Amazon...which now makes me wonder why I ordered this from Amazon.