---
product_id: 399175217
title: "FlexSolar 40W Foldable Solar Panel Charger with USB-C and USB-A Outputs for Phones, Power Banks, Tablets - Waterproof for Camping, Hiking, Backpacking"
brand: "flexsolar"
price: "Rp2515248"
currency: IDR
in_stock: true
reviews_count: 10
category: "Flex Solar"
url: https://www.desertcart.id/products/399175217-flexsolar-40w-foldable-solar-panel-charger-with-usb-c-usb
store_origin: ID
region: Indonesia
---

# 40W max power output IP67 waterproof & dustproof durability Dual fast-charging USB-A QC3.0 & USB-C PD2.0 ports (18W each) FlexSolar 40W Foldable Solar Panel Charger with USB-C and USB-A Outputs for Phones, Power Banks, Tablets - Waterproof for Camping, Hiking, Backpacking

**Brand:** flexsolar
**Price:** Rp2515248
**Availability:** ✅ In Stock

## Summary

> ☀️ Charge smarter, roam freer — never miss a moment off the grid!

## Quick Answers

- **What is this?** FlexSolar 40W Foldable Solar Panel Charger with USB-C and USB-A Outputs for Phones, Power Banks, Tablets - Waterproof for Camping, Hiking, Backpacking by flexsolar
- **How much does it cost?** Rp2515248 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/399175217-flexsolar-40w-foldable-solar-panel-charger-with-usb-c-usb)

## Best For

- flexsolar enthusiasts

## Why This Product

- Trusted flexsolar brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Fast-Charge Your Devices:** Dual USB ports with QC3.0 & PD2.0 deliver up to 18W each for rapid phone, tablet, and power bank charging.
- • **Smart & Safe Energy Flow:** Integrated IC chip optimizes charging and protects against overcurrent, overheating, and short circuits.
- • **Maximize Solar Efficiency:** Industry-leading 24% monocrystalline conversion rate powers your devices even in limited sunlight.
- • **Power Up Anywhere, Anytime:** 40W ultra-lightweight foldable panel fits your backpack for seamless off-grid charging.
- • **Built to Brave the Elements:** IP67-rated waterproof and dustproof design with ETFE coating ensures reliable performance in rugged outdoor conditions.

## Overview

The FlexSolar 40W Foldable Solar Panel Charger is a compact, high-efficiency solar solution designed for outdoor professionals and adventurers. Featuring dual fast-charging USB ports (QC3.0 & PD2.0), a 19V DC output, and smart IC technology, it delivers up to 40 watts of power with 24% solar conversion efficiency. Its IP67-rated waterproof and dustproof ETFE-coated panel ensures durability in harsh environments, while its lightweight, foldable design fits easily into backpacks. Ideal for camping, hiking, and emergency preparedness, it provides reliable, safe, and fast charging for phones, tablets, power banks, and small solar stations.

## Description

Buy FlexSolar 40W Foldable Solar Panel Charger with USB-C and USB-A Outputs for Phones, Power Banks, Tablets - Waterproof for Camping, Hiking, Backpacking: Solar Panels - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: I am surprised, happily surprised. I do with all sincerity reccomend this panel. - As solar generators are becoming popular I whimsically bought a lower end generator. This of course incited my curiosity about, solar panels. The flexsolar 40w (by the way they should change their name or modify it, as 'flexsolar' pulls up all sorts of other products), is highly appreciable. Had it not been for two videos on Youtube, about this product, I would not have taken notice. I ran across this panel while researching other, solar generators. I was waiting for pay day to buy another panel that was on sale for $50, a 60w portable panel. I missed the sale. Then flexsolar popped up, I really liked the ipad pro 11" size of the panel, when folded up. And, the youtube video was getting 35 x 38 watts on a cloudy day. (The clouds would make that number dipp significantly.) This was significantly better than other small, portable panels, that would only get half the wattage touted by their adverstising (anker, and others). It has been a several days since this panel arrived. Today is my first full sunny day. I am very famillar with a rav power 20,000 mah portable battery that I own. I charge it with an sd pd 61 watt and 30 watt ravpower ac cube, constantly. Lets just say I was not in the least bit displeased with the speed at which it was charging on solar. This panel has an old style usb port, a usbc port and a dc 5221 port. I was able to obtain from desertcart a male to male dc 5221, a male 5221 to usbc male cable, and I already own the old school usb cables. The panel does not come with cables but if you have a usbc male to male cable you can use it for your usbc device, though I do reccomend a usbc battery rather than directly into your ipad, macbook air (there is no problem charging iphone or mac book air directly, but when you charge a brick, you do not have to leave your phone or computer vulnerable), they do sell usbc to lighntning cable for iphones. It is rather crazy that I can get input above a thirty watt wall charger, from direct sunlight. I could potentially buy another panel and parallel charge with an adapter, increasing my watt input potential. The panel is well built and in all probability will take a few years of abuse. I have lived through a few hurricanes in a major city with no electricity for in excess of two weeks. I also lived through the Texas power shutdown in our unusual freeze. This device would have been a game changer. In the freeze, even a small solar generator paired with two of these panels and the right cables in parallel, can run a 12v heating throw blanket, charge ipad, laptop, and run fans. A ten watt LED lamp is a god send after being in the dark all night long, not to mention all the books, and movies to make it through entertainment wise, knowing these solar panels can and will charge my portable batteries. I am very happy and am seriously considering another panel from flexsolar. *This panel could charge my phone in less than an hour of direct full constant sunlight. *This panel folds down into a shape comperable to an 11" ipad pro, though definately thicker and heavier. 3 lbs maybe. It is not that noticeabke in a backpack. It is an apppealing pannel, shape and feel. *This panel could potentially charge my 20,000 mah usbc battery brick in three hours. A 42,000 mah solar generator battery in 6 hours. *This panel does not have "kickstands", it does work laying flat, but something to prop it toward the direction of the sun would increase the watt potential. This is my first step into solar and I sincerely believe I have made a good first step.
Review: Power Hungry? FlexSolar 40W Delivers (But Pair It Right!) - I've tested several portable solar panels in rugged conditions, and the FlexSolar 40W is a game-changer, but only when paired with the right battery. Let's break it down: Renogy E.Flex 10W: Ultralight (11.5 oz), but underwhelming: 0.696 watts/oz. Struggled to charge a 5000mAh battery in Yellowstone, even with optimal sun. Frustrating for demanding use. BigBlue 3: Moderate weight (24 oz), better output: 1.042 watts/oz. More reliable, even in cloudy conditions. Still struggled with heavy iPhone recording use. I feel the panel could be lighter with fabric trim reductions. FlexSolar 40W: Heavier (28.16 oz), but powerful: 1.243 watts/oz. The difference maker, but only when paired with a supporting battery pack. Key Insight: Solar panel wattage per ounce is important when you have to carry it on your back or in your boat all day, but compatible battery bank management is paramount. I have found optimal use occurs with a battery that allows for higher throughput charging. An unnamed Battery bank, that allows for 12V @ 1.5A input, allows for very quick recharge times. Avoid Anker battery packs that lack high-throughput charging. Best Battery Pack for Solar: https://www.desertcart.com/dp/B0CJC57PPC?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_4&th=1 Real-World Performance: With the correct battery, the FlexSolar 40W effortlessly powered a GoPro, multiple batteries, iPhone, iWatch, GPS/satcomm, speaker, headlamp, and more. Even in three days of limited sun, it maintained essential device power. In ideal conditions charging speeds are very impressive. Verdict: For serious outdoor users, the FlexSolar 40W delivers exceptional power and reliability. Yes, it's heavier, but the performance is worth it. Make sure to pair this panel with a battery that can take full advantage of the power output. Finally, use a HIGH QUALITY charging cable on USB-C. No more than 36" long. Look for something like the Anker USB-A > USB-C Powerline II, which uses a lower gauge wire. If you use a cheaper lighter weight charging cable, you are choking the solar panels ability to push power to the battery BMS. Links: *BEST* Unnamed Battery: [https://www.desertcart.com/dp/B0CJC57PPC?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_4&th=1] *WORST* Anker Battery: [https://www.desertcart.com/dp/B07S829LBX?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_10&th=1] *BEST* Flex solar panel: [https://www.desertcart.com/dp/B09H6GGK55?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_2] *MID* Big Blue 3 panel: [https://www.desertcart.com/dp/B01EXWCPLC?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_4] *WORST* Renogy E.Flex panel: [https://www.desertcart.com/dp/B01K63CO0O?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_6] *BEST* Charging Cable: [https://www.desertcart.com/Anker-Powerline-Certified-Samsung-MacBook/dp/B07213D35X?ref_=ast_sto_dp]

## Features

- 【40W Dual Fast-Charging Solar Charger】Equipped with QC3.0 USB-A & PD2.0 USB-C ports (18W max each) for simultaneous fast charging of phones (Android/iOS), tablets, power banks, etc. The 19V DC port (40W max) directly powers small stations. Smart load distribution design recommends prioritizing single-port use for peak efficiency. (Note: Instant energy conversion device with no energy storage)
- 【SMART IC CHIP TECHNOLOGY & SAFETY FEATURE】Integrated IC automatically detects the connected devices and provides the optimized charging, and an included LED light shows the charging status.FlexSolar ensure 100% safe charging with overcurrent, overheating and short-circuit protection.
- 【40W Ultra-Lightweight Foldable Solar Panel】 Ideal for mobile camps and off-grid adventures, this compact 40W solar panel delivers high-efficiency power for extended journeys without compromising portability. With ultra-compact folded dimensions of 8.0 x 11.1 x 1.8 and a featherlight 1.76lbs (0.8kg) design, it effortlessly fits into backpacks or emergency kits, ensuring reliable energy access anywhere. A must-have for outdoor enthusiasts and an essential addition to emergency preparedness gear.
- 【24% High-Efficiency Conversion & IP67 Weatherproof Durability】 Advanced monocrystalline cells deliver an industry-leading 24% solar conversion rate, maximizing energy output even in limited sunlight. Built to endure rugged environments, the panel features IP67-rated dustproof/waterproof construction and ETFE laminate coating, offering superior resistance to rain, dust, and abrasion compared to standard PET panels. While the junction box is not fully waterproof (store indoors during heavy rain), its robust design ensures long-term reliability in harsh conditions.
- 【PACKAGE & SUPPORT】Your purchase includes:1×40W Solar Panel,2 ×Carabiners and 1×User Manual.Important Notes: For optimal charging efficiency, position the solar panel at a 45° angle facing direct sunlight. Shade or partial coverage may reduce performance by up to 70%. While this solar panel is IP67 waterproof, avoid submerging it in water for over 30 minutes.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| AC Adapter Current | 2.1 Amps |
| ASIN | B09H6GGK55 |
| Best Sellers Rank | #32,921 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #161 in Solar Panels |
| Brand | FlexSolar |
| Color | Black |
| Connectivity technologies | USB (QC 3.0) port, DC5521 port, Type-C port |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,162) |
| Date First Available | October 21, 2021 |
| Efficiency | High Efficiency |
| Form Factor | Foldable |
| Included Components | 2* Carabiners, 40W solar chargers |
| Item Weight | 2.27 pounds |
| Item model number | E40 |
| Manufacturer | FlexSolar |
| Material | ETFE |
| Maximum Power | 40 Watts |
| Maximum Voltage | 20 Volts (DC) |
| Other display features | Wireless |
| Output Voltage | 19 Volts (DC) |
| Product Dimensions | 48.8"L x 11"W x 0.1"H |
| Special Feature | Foldable & Portable, High Energy Conversion, Lightweight Design, Quick Charge QC 3.0 USB-A ,USB-C PD2.0 and DC ports, Smart IC Technology |
| Special features | Foldable & Portable, High Energy Conversion, Lightweight Design, Quick Charge QC 3.0 USB-A ,USB-C PD2.0 and DC ports, Smart IC Technology |
| UPC | 785249519352 |

## Product Details

- **Brand:** FlexSolar
- **Efficiency:** High Efficiency
- **Included Components:** 2* Carabiners, 40W solar chargers
- **Material:** ETFE
- **Product Dimensions:** 48.8"L x 11"W x 0.1"H

## Images

![FlexSolar 40W Foldable Solar Panel Charger with USB-C and USB-A Outputs for Phones, Power Banks, Tablets - Waterproof for Camping, Hiking, Backpacking - Image 1](https://m.media-amazon.com/images/I/41cY0bvydkL.jpg)
![FlexSolar 40W Foldable Solar Panel Charger with USB-C and USB-A Outputs for Phones, Power Banks, Tablets - Waterproof for Camping, Hiking, Backpacking - Image 2](https://m.media-amazon.com/images/I/61r8Qqj+w0L.jpg)
![FlexSolar 40W Foldable Solar Panel Charger with USB-C and USB-A Outputs for Phones, Power Banks, Tablets - Waterproof for Camping, Hiking, Backpacking - Image 3](https://m.media-amazon.com/images/I/81LXvx0CrVL.jpg)
![FlexSolar 40W Foldable Solar Panel Charger with USB-C and USB-A Outputs for Phones, Power Banks, Tablets - Waterproof for Camping, Hiking, Backpacking - Image 4](https://m.media-amazon.com/images/I/41bfhXM6lAL.jpg)
![FlexSolar 40W Foldable Solar Panel Charger with USB-C and USB-A Outputs for Phones, Power Banks, Tablets - Waterproof for Camping, Hiking, Backpacking - Image 5](https://m.media-amazon.com/images/I/41I4WIxRAmL.jpg)

## Questions & Answers

**Q: How many amps is everyone getting? i'm getting 1.6a via usb on the 40w solar version. how can i hit 2.1a?**
A: What most of the reviews say is that you'll rarely hit 2.1a and it's also inconsistent with clouds, etc. And every time you drop below 2.1a, your phone, tablet may stop charging which could require you to unplug/plug back in to restart charging. The best way to solve this is to use the solar panel to charge a battery bank which will take whatever it can get from the solar with little fuss on amperage. Then use the battery bank to charge your phone as it provides the consistent 2.1a your phone/tablet needs. Many battery banks will not simultaneously charge (solar/wall plug) and discharge (phone/tablet), but if needed find one that has "pass through" charging.

**Q: Does solar panel have reverse voltage prevention capability to prevent draining the battery of the item being charged?**
A: It seemed to drain my phone.   2 percent battery loss in a second all at once.

**Q: Can 3 of these FlexSolar 40W solar chargers be tethered for even more power wattage?**
A: If by tethered you mean daisy-chained, then the answer is no. This is not like the permanent or some of the bigger 100w solar panels designed to be daisy chained for higher wattage. 

That doesn't mean there isn't a way to use multiple units, but that really depends on what you are trying to power. And that is the biggest question, what are you trying to charge that takes or needs 120watts? You might be better off looking at a higher end panel set.

**Q: I am going camping in the desert for a week and am looking for a way to charge a mini air cooler.  Would I need a power bank also?**
A: FlexSolar 40 watts solar charger panel can only be used in the sunlight and No function of storing electricity. If you want to use the electricity in the night, you can buy a power bank.

## Customer Reviews

### ⭐⭐⭐⭐⭐ I am surprised, happily surprised. I do with all sincerity reccomend this panel.
*by J***S on February 28, 2022*

As solar generators are becoming popular I whimsically bought a lower end generator. This of course incited my curiosity about, solar panels. The flexsolar 40w (by the way they should change their name or modify it, as 'flexsolar' pulls up all sorts of other products), is highly appreciable. Had it not been for two videos on Youtube, about this product, I would not have taken notice. I ran across this panel while researching other, solar generators. I was waiting for pay day to buy another panel that was on sale for $50, a 60w portable panel. I missed the sale. Then flexsolar popped up, I really liked the ipad pro 11" size of the panel, when folded up. And, the youtube video was getting 35 x 38 watts on a cloudy day. (The clouds would make that number dipp significantly.) This was significantly better than other small, portable panels, that would only get half the wattage touted by their adverstising (anker, and others). It has been a several days since this panel arrived. Today is my first full sunny day. I am very famillar with a rav power 20,000 mah portable battery that I own. I charge it with an sd pd 61 watt and 30 watt ravpower ac cube, constantly. Lets just say I was not in the least bit displeased with the speed at which it was charging on solar. This panel has an old style usb port, a usbc port and a dc 5221 port. I was able to obtain from amazon a male to male dc 5221, a male 5221 to usbc male cable, and I already own the old school usb cables. The panel does not come with cables but if you have a usbc male to male cable you can use it for your usbc device, though I do reccomend a usbc battery rather than directly into your ipad, macbook air (there is no problem charging iphone or mac book air directly, but when you charge a brick, you do not have to leave your phone or computer vulnerable), they do sell usbc to lighntning cable for iphones. It is rather crazy that I can get input above a thirty watt wall charger, from direct sunlight. I could potentially buy another panel and parallel charge with an adapter, increasing my watt input potential. The panel is well built and in all probability will take a few years of abuse. I have lived through a few hurricanes in a major city with no electricity for in excess of two weeks. I also lived through the Texas power shutdown in our unusual freeze. This device would have been a game changer. In the freeze, even a small solar generator paired with two of these panels and the right cables in parallel, can run a 12v heating throw blanket, charge ipad, laptop, and run fans. A ten watt LED lamp is a god send after being in the dark all night long, not to mention all the books, and movies to make it through entertainment wise, knowing these solar panels can and will charge my portable batteries. I am very happy and am seriously considering another panel from flexsolar. *This panel could charge my phone in less than an hour of direct full constant sunlight. *This panel folds down into a shape comperable to an 11" ipad pro, though definately thicker and heavier. 3 lbs maybe. It is not that noticeabke in a backpack. It is an apppealing pannel, shape and feel. *This panel could potentially charge my 20,000 mah usbc battery brick in three hours. A 42,000 mah solar generator battery in 6 hours. *This panel does not have "kickstands", it does work laying flat, but something to prop it toward the direction of the sun would increase the watt potential. This is my first step into solar and I sincerely believe I have made a good first step.

### ⭐⭐⭐⭐⭐ Power Hungry? FlexSolar 40W Delivers (But Pair It Right!)
*by A***3 on March 11, 2025*

I've tested several portable solar panels in rugged conditions, and the FlexSolar 40W is a game-changer, but only when paired with the right battery. Let's break it down: Renogy E.Flex 10W: Ultralight (11.5 oz), but underwhelming: 0.696 watts/oz. Struggled to charge a 5000mAh battery in Yellowstone, even with optimal sun. Frustrating for demanding use. BigBlue 3: Moderate weight (24 oz), better output: 1.042 watts/oz. More reliable, even in cloudy conditions. Still struggled with heavy iPhone recording use. I feel the panel could be lighter with fabric trim reductions. FlexSolar 40W: Heavier (28.16 oz), but powerful: 1.243 watts/oz. The difference maker, but only when paired with a supporting battery pack. Key Insight: Solar panel wattage per ounce is important when you have to carry it on your back or in your boat all day, but compatible battery bank management is paramount. I have found optimal use occurs with a battery that allows for higher throughput charging. An unnamed Battery bank, that allows for 12V @ 1.5A input, allows for very quick recharge times. Avoid Anker battery packs that lack high-throughput charging. Best Battery Pack for Solar: https://www.amazon.com/dp/B0CJC57PPC?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_4&th=1 Real-World Performance: With the correct battery, the FlexSolar 40W effortlessly powered a GoPro, multiple batteries, iPhone, iWatch, GPS/satcomm, speaker, headlamp, and more. Even in three days of limited sun, it maintained essential device power. In ideal conditions charging speeds are very impressive. Verdict: For serious outdoor users, the FlexSolar 40W delivers exceptional power and reliability. Yes, it's heavier, but the performance is worth it. Make sure to pair this panel with a battery that can take full advantage of the power output. Finally, use a HIGH QUALITY charging cable on USB-C. No more than 36" long. Look for something like the Anker USB-A > USB-C Powerline II, which uses a lower gauge wire. If you use a cheaper lighter weight charging cable, you are choking the solar panels ability to push power to the battery BMS. Links: *BEST* Unnamed Battery: [https://www.amazon.com/dp/B0CJC57PPC?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_4&th=1] *WORST* Anker Battery: [https://www.amazon.com/dp/B07S829LBX?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_10&th=1] *BEST* Flex solar panel: [https://www.amazon.com/dp/B09H6GGK55?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_2] *MID* Big Blue 3 panel: [https://www.amazon.com/dp/B01EXWCPLC?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_4] *WORST* Renogy E.Flex panel: [https://www.amazon.com/dp/B01K63CO0O?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_6] *BEST* Charging Cable: [https://www.amazon.com/Anker-Powerline-Certified-Samsung-MacBook/dp/B07213D35X?ref_=ast_sto_dp]

### ⭐⭐⭐⭐ Gets the job done
*by M***F on June 17, 2024*

Doesn't take up much room when it's folded, as long as it's not too cloudy you can run some usb powered stuff constantly. With a moderate amount of light it could run the first level of a usb fan I use, good direct sunlight could run the second level. Don't expect to run long cables directly from the panel, have it connected to a power bank with a short cable. The panels managed to charge about 10% of my 20,000 MaH power bank per hour when in good direct sunlight.

## Frequently Bought Together

- FlexSolar 40W Foldable Solar Panel Charger with USB-C and USB-A Outputs for Phones, Power Banks, Tablets - Waterproof for Camping, Hiking, Backpacking
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*Product available on Desertcart Indonesia*
*Store origin: ID*
*Last updated: 2026-02-28*