FlexSolar 20W Portable Solar Panel, High-Efficiency Monocrystalline PV Module Power Charger with Dual USB Ports for Phones, Tablets, Power Bank, Camera and Other Off-Grid Applications

FlexSolar 20W Portable Solar Panel, High-Efficiency Monocrystalline PV Module Power Charger with Dual USB Ports for Phones, Tablets, Power Bank, Camera and Other Off-Grid Applications

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FlexSolar 20W Portable Solar Panel, High-Efficiency Monocrystalline PV Module Power Charger with Dual USB Ports for Phones, Tablets, Power Bank, Camera and Other Off-Grid Applications
Price: $27.99 - $22.79
(as of Aug 18,2025 13:51:54 UTC – Details)

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Customers say

Customers find the solar panel compact and well-built, with positive feedback about its functionality and wattage performance. They appreciate its portability, with one customer noting it's perfect for hiking. The charging speed receives mixed reviews, with some customers reporting rapid charging while others say it never works.

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Build qualityFunctionalitySizeUseWattageCharging speed
5 customers mention "Build quality"5 positive0 negative

Customers appreciate the build quality of the solar panel.

"…Quality: it's tough, and durable. I would recommend." Read more
"Product worked as described definitely built Well seems quite robust fits right inside your backpack and appears to put out the wattage claimed what…" Read more
"Excellent construction, excellent performance, excellent purchase. Wished it came in a protective sleeve or case" Read more
"These FEEL very solid and durable, but they don't last, which is a shame because their charging power is excellent…." Read more
4 customers mention "Functionality"4 positive0 negative

Customers find that the solar panel works well, with one mentioning it performs great in their truck.

"it for traveling it good only for phone but my phone alway said charger low , but not sure this solar can do 30w…" Read more
"They started a lot. Solar panel works well, and was easy to set up and use the only trouble one of the adapters for indirect sunlight I feel like it…" Read more
"Only used it a couple times, but does what it's needed well…." Read more
"Perfect for smaller spaces and works great in my truck…." Read more
4 customers mention "Size"4 positive0 negative

Customers like the size of the solar panel, describing it as compact.

"…It's compact and light weight, bu5 be careful because the panels are water proof but the charging ports are not…." Read more
"Like the size and output of this panel, even better than it offers USB-C and USB-A connectivity…." Read more
"…as described definitely built Well seems quite robust fits right inside your backpack and appears to put out the wattage claimed what else could you…" Read more
"Perfect for smaller spaces and works great in my truck…." Read more
4 customers mention "Use"4 positive0 negative

Customers find the solar panel useful, with one mentioning it's recommended for camping or emergency use, while another notes it's perfect for hiking.

"…Ease of use: it's perfect for a carry on, i have it in my bug out bag which goes everywhere with me…." Read more
"…Definitely recommended for camping or emergency use." Read more
"Great to have on hand for if and when the power goes out." Read more
"it for traveling it good only for phone but my phone alway said charger low , but not sure this solar can do 30w…" Read more
3 customers mention "Wattage"3 positive0 negative

Customers are satisfied with the solar panel's power output, with one customer confirming it delivers the wattage claimed.

"Power: the power is good, I not one to test the out put, but I live in Arizona, always sunny and this this can charge my phone and back up battery…" Read more
"…quite robust fits right inside your backpack and appears to put out the wattage claimed what else could you want nice product highly recommended" Read more
"The max output is 7 watts in the direct sun" Read more
11 customers mention "Charging speed"7 positive4 negative

Customers have mixed experiences with the solar panel's charging speed, with some reporting it charges rapidly while others say it never works.

"…the out put, but I live in Arizona, always sunny and this this can charge my phone and back up battery pack no problem…." Read more
"I ordered 2 of these. Tried to charge for several days. They wouldn't charge and didn't work, so I returned both." Read more
"…Was able to hit rapid charge speeds on my Pixel 7 in just moderate sunlight. Definitely recommended for camping or emergency use." Read more
"…but they don't last, which is a shame because their charging power is excellent…." Read more





10/10

5 out of 5 stars

10/10
I had the 20w version for about a year, and the 30w for a month so far. Same size panels but the forth really makes the difference. The 20w needed to be in perfectly clear sky and angled nearly perfect to draw 9v/1.4-1.6a, almost never giving more than 15w. The 30w version consistently outputs 9v/2.0a even it's in a wonky angle. (My device's max input is 20w) In overcast weather it drops to around 0.8-1.0a but maintains the 9v. I highly suggest folding some cardboard to about the shape and thickness of the empty space left inside the folded up panels if you're putting it in a backpack. The "hinges" have wires in them and repeatedly creasing the hinges is how I broke the 20w. I used the box it came in and it doubles as a way to prop it up.
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Top reviews from the United States



  • Psichibot

    5.0 out of 5 stars

    Perfect for hiking, camping or just to have.

    Reviewed in the United States on November 27, 2023

    Color: E-30WVerified Purchase

    Power: the power is good, I not one to test the out put, but I live in Arizona, always sunny and this this can charge my phone and back up battery pack no problem.

    Charging: it does good at charging even on some what cloudy days.

    Ease of use: it's perfect for a carry on, i have it in my bug out bag which goes everywhere with me. It's compact and light weight, bu5 be careful because the panels are water proof but the charging ports are not.

    Quality: it's tough, and durable. I would recommend.


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  • DUSTIN R OVERBY

    5.0 out of 5 stars

    Fantastic, Charges Rapidly

    Reviewed in the United States on October 29, 2024

    Color: S20WVerified Purchase

    Like the size and output of this panel, even better than it offers USB-C and USB-A connectivity. Was able to hit rapid charge speeds on my Pixel 7 in just moderate sunlight. Definitely recommended for camping or emergency use.


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  • Kelly

    4.0 out of 5 stars

    Peak output isn't that high

    Reviewed in the United States on July 18, 2023

    Color: E-30WVerified Purchase

    I works, but despite being in direct sunlight in Texas it's output is more like a 15-20 watt panel

    3 people found this helpful

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  • guttermonkk

    5.0 out of 5 stars

    10/10

    Reviewed in the United States on September 21, 2023

    Color: E-30WVerified Purchase

    I had the 20w version for about a year, and the 30w for a month so far. Same size panels but the forth really makes the difference.

    The 20w needed to be in perfectly clear sky and angled nearly perfect to draw 9v/1.4-1.6a, almost never giving more than 15w. The 30w version consistently outputs 9v/2.0a even it's in a wonky angle. (My device's max input is 20w)

    In overcast weather it drops to around 0.8-1.0a but maintains the 9v.

    I highly suggest folding some cardboard to about the shape and thickness of the empty space left inside the folded up panels if you're putting it in a backpack. The "hinges" have wires in them and repeatedly creasing the hinges is how I broke the 20w. I used the box it came in and it doubles as a way to prop it up.

    Customer image


    guttermonkk

    5.0 out of 5 stars

    10/10

    Reviewed in the United States on September 21, 2023


    I had the 20w version for about a year, and the 30w for a month so far. Same size panels but the forth really makes the difference.

    The 20w needed to be in perfectly clear sky and angled nearly perfect to draw 9v/1.4-1.6a, almost never giving more than 15w. The 30w version consistently outputs 9v/2.0a even it's in a wonky angle. (My device's max input is 20w)

    In overcast weather it drops to around 0.8-1.0a but maintains the 9v.

    I highly suggest folding some cardboard to about the shape and thickness of the empty space left inside the folded up panels if you're putting it in a backpack. The "hinges" have wires in them and repeatedly creasing the hinges is how I broke the 20w. I used the box it came in and it doubles as a way to prop it up.

    Images in this review

    Customer imageCustomer imageCustomer image

    6 people found this helpful

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  • Ingrid van beveren

    1.0 out of 5 stars

    Sent back… wouldn't charge

    Reviewed in the United States on October 23, 2023

    Color: S20WVerified Purchase

    I ordered 2 of these. Tried to charge for several days. They wouldn't charge and didn't work, so I returned both.

    3 people found this helpful

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  • Reviewer

    5.0 out of 5 stars

    Only used it a couple times, but does what it's needed well.

    Reviewed in the United States on January 14, 2025

    Color: E-30WVerified Purchase

    Great to have on hand for if and when the power goes out.

    One person found this helpful

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  • Craig Finnegan

    2.0 out of 5 stars

    Looks can be deceiving

    Reviewed in the United States on April 8, 2023

    Color: E-30WVerified Purchase

    These FEEL very solid and durable, but they don't last, which is a shame because their charging power is excellent. I bought 2 of them in late March and both died on me at the end of August. When it happened, I tried them both with different charge cables and different devices, so I know it was these FlexSolar chargers that were dead (Is it reassuring that they're manufactured so consistently that they both had exactly the same short lifespan?).
    I've had much better luck with the BigBlue 28w solar charger panels. I have 2 of those also and after a full year of rigorous use they're both going strong (Nektech has what looks like the same thing under a different name). The BigBlue doesn't charge quite as fast as the FlexSolar chargers did, but I'll gladly take the MUCH longer durability of the BigBlue over the slightly stronger charging power of the FlexSolar.

    *Note – When charging in high temperatures, cover your device (phone, tablet, powerful bank, drone battery, whatever) in insulating material like a heavy-duty mailing envelope (cardboard works better than cloth). ALTERNATELY, YOU CAN BUY A LONGER CHARGE CORD AND KEEP YOUR DEVICE IN THE SHADE. I've had my devices stop charging at midday with three different solar panel brands – and guess where I live? Florida. At first I suspected the solar panels going bad, and since they're inexpensive enough, I'd buy a different brand. Eventually, though, a notice popped up on my phone – "Charging will continue when the device cools down."
    Insulate your device when charging in high temperatures.
    Another problem is what I call "backcharge." It's the gradual draining of your device's battery while connected to the solar charger when there's no sunlight. So keep an eye on whether the panels are still in the sunlight or not – which isn't as easy as you might think due to distractions by other things.

    17 people found this helpful

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  • Emily

    3.0 out of 5 stars

    Still trying to decide if its a keeper

    Reviewed in the United States on December 14, 2022

    Color: E-30WVerified Purchase

    I haven't had much luck actually getting the 30 watt version to charge either my anker power banks, or Iphone XR direct by USB, or with the included USB C adapter. I have been using it placed in a window on sunny day, in both direct and indirect sunlight. Maybe it's just not enough light. I am not sure it would be significantly brighter trying it outside.

    The best I have been able to achieve is that I think I got it to charge my anker power bank, enough to charge my iphone about 50%. Most of the time, even with the sun directly hitting the panel.
    My iphone for example will show that its charging, but never actually charge.

    I am going to try this out a little more and I might revise my review accordingly if I get it to work better in more direct sunlight.

    I bought this because I wanted to be able to charge power banks, my phone, or flashlights in case of power outage. I would have thought the 30w version would be able to handle this in less than optimal light, but maybe I need a higher wattage panel for my needs.

    7 people found this helpful

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Top reviews from other countries

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  • Andrea
    5.0 out of 5 stars

    Pannello solare 30w

    Reviewed in Italy on June 22, 2025

    Color: E-30WVerified Purchase

    Pacco arrivato in perfetto orario✅
    Involucro perfetto✅
    Il pannello pesa all’incirca 1kg, bello nel design e struttura compatta.
    Per quanto riguarda l’utilizzo: come percepisce il sole inizia subito il processo di ricarica, in base alla sua posizione e alla capacità di assorbire la luce ricarica più o meno velocemente ma comunque io lo utilizzo per ricaricare powerbank o altri oggetti di utilizzo quotidiano che non necessitano di una ricarica veloce.
    Lo consiglio✅

    Customer image


    Andrea

    5.0 out of 5 stars

    Pannello solare 30w

    Reviewed in Italy on June 22, 2025


    Pacco arrivato in perfetto orario✅
    Involucro perfetto✅
    Il pannello pesa all’incirca 1kg, bello nel design e struttura compatta.
    Per quanto riguarda l’utilizzo: come percepisce il sole inizia subito il processo di ricarica, in base alla sua posizione e alla capacità di assorbire la luce ricarica più o meno velocemente ma comunque io lo utilizzo per ricaricare powerbank o altri oggetti di utilizzo quotidiano che non necessitano di una ricarica veloce.
    Lo consiglio✅

    Images in this review

    Customer imageCustomer imageCustomer image



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  • Venancio
    5.0 out of 5 stars

    Satisfecho

    Reviewed in Mexico on January 26, 2024

    Color: E-30WVerified Purchase

    Cumple su función, cargo 2 teléfonos y una bocina al 💯, con cielo despejado

    Customer image


    Venancio

    5.0 out of 5 stars

    Satisfecho

    Reviewed in Mexico on January 26, 2024


    Cumple su función, cargo 2 teléfonos y una bocina al 💯, con cielo despejado

    Images in this review

    Customer image



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  • Stefan.
    5.0 out of 5 stars

    Works

    Reviewed in Sweden on July 25, 2024

    Color: E-30WVerified Purchase

    It works as expected, no problems.



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  • Valentin
    5.0 out of 5 stars

    Parfait

    Reviewed in France on January 31, 2025

    Color: E-30WVerified Purchase

    Recharge le téléphone parfaitement en charge rapide ( Samsung s20 FE ) même avec quelques nuages à l'horizon je suis content de mon achat



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  • Chris
    5.0 out of 5 stars

    Is it worth it?

    Reviewed in the United Kingdom on August 11, 2024

    Color: E-30WVerified Purchase

    I sellotaped this to my bedroom window with a large power bank attached to it and its worked amazing though a 20,000mah it takes about 3 sunny days to fully charge it or 4 to 5 days on dull days though that could be halted by the fact my power bank isnt capable of fast charge where this solar panel can deliver fast charge



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Product Summary: FlexSolar 20W Portable Solar Panel, High-Efficiency Monocrystalline PV Module Power Charger with Dual USB Ports for Phones, Tablets, Power Bank, Camera and Other Off-Grid Applications

From FlexSolar
【20W USB Solar Panel】The 20W solar panels with Dual USB port, a power output of 15W (max) in the case of sufficient sunlight,it compatible with smart phones, power bank,outdoor watch GPS,security camera and etc.If 2 ports are used for charging at the same time, one side can only a power output of 10W (max). NOTE:Our solar panel can’t store the electricity or power.
【Up to 24% High Conversion Efficiency】USB solar charger made of 2 well-build monocrystalline silicon panels, using high transmittance ETFE material and micro-concave-convex design, which increases the contact area with the sun and the conversion rate of energy. The solar panel can convert up to 24% of the solar energy into free energy under sufficient sunlight.
【Dual USB Smart Charging Technology】The solar panel portable with 2 USB output ports (1* USB QC 3.0, 1*PD 15W),it can charge for smartphones, tablets, GPS, digital cameras. And solar panel charger built-in smart chip smart identification of your device, and according to different devices to provide the best charging speed.Please note that this product has no DC output, so it cannot charge your power stations.
【Foldable & Lightweight】Solar charger come with Foldable design, (Fold Size: 12.0 x 9.8 x 0.6 in,Unfold size: 18.2 x 12.0 x 0.6 in). 2 compact solar panels can be folded into a tablet size of only 1.5lbs(700g) and easily hung on your backpack or travel bag with 2 included metal carabiner. 20W portable solar charger is suitable for camping, riding, climbing, rock climbing, any external activity.
【Package & After-sales service】You will get 1x FlexSolar 20W Solar Phone Charger, 2x climbing carabiners, 1x user manual. If you have any questions, please feel free to contact us, we will answer within 24 hours.

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