--- 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: "NT$3882" currency: TWD in_stock: true reviews_count: 8 category: "Flex Solar" url: https://www.desertcart.tw/products/399175217-flexsolar-40w-foldable-solar-panel-charger-with-usb-c-usb store_origin: TW region: Taiwan --- # 40W max power output IP67 waterproof & dustproof durability Dual fast-charging USB-C & USB-A 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:** NT$3882 **Availability:** ✅ In Stock ## Summary > ☀️ Charge smarter, roam farther — never miss a beat 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?** NT$3882 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/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 Like a Pro:** Dual QC3.0 USB-A & PD2.0 USB-C ports deliver up to 18W each, powering your devices at lightning speed. - • **Smart & Safe Energy Flow:** Integrated IC chip optimizes charging and protects against overcurrent, overheating, and short circuits. - • **Maximize Your Solar Gains:** Industry-leading 24% monocrystalline efficiency converts more sunlight into power—even in limited sun. - • **Power Up Anywhere, Anytime:** 40W ultra-lightweight foldable design fits effortlessly in your backpack for on-the-go energy freedom. - • **Built to Brave the Elements:** IP67-rated waterproof and dustproof with ETFE coating ensures rugged reliability on every adventure. ## Overview The FlexSolar 40W Foldable Solar Panel Charger is a compact, ultra-lightweight power solution featuring dual fast-charging USB-C and USB-A ports with 18W max output each, plus a 19V DC port for small stations. Engineered with advanced monocrystalline cells delivering 24% efficiency and protected by IP67 waterproof/dustproof ETFE coating, it’s built for rugged outdoor use. Smart IC technology ensures optimized, safe charging for phones, tablets, and power banks, making it the ultimate companion for camping, hiking, and emergency preparedness. ## 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 Chargers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases 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] Review: A must have BEST 40watt Solar Panel - This is the best 40 watt solar panel on the market. It’s extremely durable and has a coating similar to that of a basketball, yet it performs better than my 60 watt solar panel. It charges my power bank via USB Type-C at up to 30 watts, with a minimum of 21 watts on sunny days while laying flat. I highly recommend it as it even provides 4-5 watts of charge in daylight with no direct sun something my other panels don’t do. I love its foldability; it's well designed, compact, and easy to carry. It charges my iPhone 15 Pro at its maximum speed of 20 watts before dropping to 7-9 watts, making it a fast and efficient option. ## 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 | | Amperage Capacity | 2.1 Amps | | Best Sellers Rank | #5,049 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #5 in Cell Phone Solar Chargers | | Brand | FlexSolar | | Brand Name | FlexSolar | | Connector Type | USB Type A, USB Type C | | Customer Reviews | 4.3 out of 5 stars 1,194 Reviews | | Efficiency | High Efficiency | | Folded Size | 8,14x11,1x1,73 pollici | | Included Components | 2* Carabiners, 40W solar chargers | | Item Dimensions L x W x H | 48.8"L x 11"W x 0.1"H | | Item Type Name | Foldable Solar Panel | | Manufacturer | FlexSolar | | Manufacturer Part Number | FLC-E6-200400- | | Material | ETFE | | Material Type | ETFE | | Maximum Power | 40 Watts | | Maximum Voltage | 20 Volts (DC) | | Model Number | E40 | | Output Voltage | 19 Volts (DC) | | Product Dimensions | 48.8"L x 11"W x 0.1"H | | 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 | | Unit Count | 1.0 Count | ## 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) ## Available Options This product comes in different **Size** options. ## 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 ### ⭐⭐⭐⭐⭐ 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] ### ⭐⭐⭐⭐⭐ A must have BEST 40watt Solar Panel *by R***W on July 19, 2024* This is the best 40 watt solar panel on the market. It’s extremely durable and has a coating similar to that of a basketball, yet it performs better than my 60 watt solar panel. It charges my power bank via USB Type-C at up to 30 watts, with a minimum of 21 watts on sunny days while laying flat. I highly recommend it as it even provides 4-5 watts of charge in daylight with no direct sun something my other panels don’t do. I love its foldability; it's well designed, compact, and easy to carry. It charges my iPhone 15 Pro at its maximum speed of 20 watts before dropping to 7-9 watts, making it a fast and efficient option. ### ⭐⭐⭐⭐ Unknown if this is the issue. *by M***U on January 28, 2026* Looks good and not sure if it works correctly. Used to try and charge inverter and it would not charge it to 100%. ## 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 - Aquatabs 397mg Water Purification Tablets (100 Pack). Water Filtration System for, Camping, Boating, Emergencies, Survival, RVs, and Marine-Use. Easy to Use Treatment and Disinfection. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tw/products/399175217-flexsolar-40w-foldable-solar-panel-charger-with-usb-c-usb](https://www.desertcart.tw/products/399175217-flexsolar-40w-foldable-solar-panel-charger-with-usb-c-usb) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-04-23*