--- product_id: 691718937 title: "Ultra-Light 21W Portable Solar Charger with USB-A/-C (5V/4.2A Toal)" brand: "bigblue" price: "$115.42" currency: USD in_stock: true reviews_count: 10 category: "Big Blue" url: https://www.desertcart.us/products/691718937-ultra-light-21w-portable-solar-charger-with-usb-a-c store_origin: US region: United States of America --- # IP68 waterproof & dustproof Dual USB-A & USB-C smart charging 21W high-efficiency solar power Ultra-Light 21W Portable Solar Charger with USB-A/-C (5V/4.2A Toal) **Brand:** bigblue **Price:** $115.42 **Availability:** ✅ In Stock ## Summary > ☀️ Charge Ahead: Power Your Adventures with Smart Solar Tech! ## Quick Answers - **What is this?** Ultra-Light 21W Portable Solar Charger with USB-A/-C (5V/4.2A Toal) by bigblue - **How much does it cost?** $115.42 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/691718937-ultra-light-21w-portable-solar-charger-with-usb-a-c) ## Best For - bigblue enthusiasts ## Why This Product - Trusted bigblue brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Dual Ports:** Simultaneously charge multiple devices with intelligent USB-A and USB-C ports delivering up to 4.2A total. - • **Eco-Tech Durability:** Advanced one-piece lamination with UV-resistant EVA and corrosion-proof ETFE for double lifespan. - • **Sun-Powered Freedom:** Harness 21W of monocrystalline solar energy with 24.7% efficiency for reliable off-grid charging. - • **Weatherproof Warrior:** IP68-rated ETFE surface ensures unstoppable power rain or shine, dust or dust storm. - • **Ultra-Light & Foldable:** Compact 850g design folds flat for effortless portability on every adventure. ## Overview The BigBlue Ultra-Light 21W Portable Solar Charger features cutting-edge monocrystalline panels with 24.7% efficiency, protected by a rugged IP68 waterproof ETFE surface. Equipped with smart dual USB-A and USB-C ports delivering up to 4.2A total, it charges multiple devices simultaneously. Its foldable, lightweight design (850g) and durable lamination technology make it the perfect companion for camping, hiking, and emergency power needs. ## Description Free delivery and returns on eligible orders. Buy Ultra-Light 21W Portable Solar Charger, BigBlue Foldable Solar Panel Charger with USB-A and USB-C (5V/4.2A Toal), IP68 Waterproof for Camping, Emergency Power, Compatible with Phone, Power Bank etc. at desertcart UK. Review: Worked well on expedition - Great solar panel. Kept all my devices charged easily on expedition in Pakistan. It’s rugged and well made. Review: Great addition to my tech gear! - I am very happy with what I got! It works amazing in good weather. I didn't even position it and tilted it according to the sun (was on the beach, midday, so...). But even under some clouds it was doing ~10-15% battery charge per 30-35 mins. Made sturdy and can be placed almost anywhere. Charging more than 1 device slows it down. Could it be better - may be, I don't know. I am not in a rush and will never be in a rush in places where I will need to use that (Beach, hiking, terrace at home). I am VERY happy with this purchase! :) ## Features - 【Upgraded Solar Panels】Used advanced but latest one-piece lamination technology, BigBlue 21W solar charger combines high-quality ETFE, UV-resistant EVA and efficient solar cells. ETFE is extremely durable and resistant to environmental elements, which is corrosion resistance, and fire retardancy, with a double life-span compared to other PET solar panels - 【IP68 Waterproof Level】Special ETFE surface protects this solar panel from occasional rain in unexpected weather, it comes with a higher grade water resistance and dust protection than other solar chargers. Built-in MOS prevents the flow of current from the battery to the solar panel thereby preventing the battery from discharging - 【Easy to Use】Unfold all the solar panels in outdoor sunlight, then connect your devices to the output ports with certified cable. Note: this solar charger can't store electricity - 【High-Efficiency Conversion】This 21W solar phone charger used the monocrystalline solar panel which increases the efficiency of charging by up to 24.7%. The light transmittance of ETFE panels is up to 95%, you'll get good quality and high efficiency together. This portable solar panel is suitable for camping, hiking, climbing or other outdoor activities - 【Exclusive Smart Charge Technology】Upgraded USB-A and USB-C ports (5V/2.4A for each) are equipped with smart chips that can recognize your device smartly and maximize the charging efficiency, capable to charge almost any portable 5V electronic device under enough sunlight, such as mobile phones, tablets, power bank, etc. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DNYGT71X | | Best Sellers Rank | 96 in Mobile Phone Solar Chargers | | Guaranteed software updates until | unknown | | Item model number | 9d76fa94-4ed7-4180-a11f-4a16fb0e3375 | | Manufacturer | BigBlue | | Product Dimensions | 22.4 x 2.6 x 20.6 cm; 850 g | ## Product Details - **Amperage:** 4.2 Amps - **Brand:** BigBlue - **Compatible devices:** Cellular Phones - **Compatible phone models:** Huawei, Xiaomi, Apple, Samsung - **Connector type:** USB Type A, USB Type C - **Included components:** 1 x USB-C to USB-C Cable, 2 x Carabiner - **Number of items:** 1 - **Output current:** 2.4 Amps - **Total USB ports:** 2 - **Wattage:** 21 watts ## Images ![Ultra-Light 21W Portable Solar Charger with USB-A/-C (5V/4.2A Toal) - Image 1](https://m.media-amazon.com/images/I/817DI1hwr7L.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worked well on expedition *by M***M on 17 August 2025* Great solar panel. Kept all my devices charged easily on expedition in Pakistan. It’s rugged and well made. ### ⭐⭐⭐⭐⭐ Great addition to my tech gear! *by S***V on 29 August 2025* I am very happy with what I got! It works amazing in good weather. I didn't even position it and tilted it according to the sun (was on the beach, midday, so...). But even under some clouds it was doing ~10-15% battery charge per 30-35 mins. Made sturdy and can be placed almost anywhere. Charging more than 1 device slows it down. Could it be better - may be, I don't know. I am not in a rush and will never be in a rush in places where I will need to use that (Beach, hiking, terrace at home). I am VERY happy with this purchase! :) ### ⭐⭐⭐⭐ Charges my jackery slowly, but surely *by C***E on 10 July 2025* Its good, it charges, I bought it to charge the jackery & it works, obviously slower than home voltage but yes, it works ## Frequently Bought Together - Ultra-light 21W Portable Solar Charger, BigBlue Foldable Solar Panel Charger with USB-A and USB-C (5V/4.2A Toal), IP68 Waterproof for Camping, Emergency Power, Compatible with Phone, Power Bank etc. - aZengear Emergency Survival Poncho (4pc) Thermal Mylar Foil Coating Blanket for Heat Retention and Rain | Reversible with Hood | Waterproof, Windproof, Portable, Hands-free, Outdoor Kit - Bramble 10 Emergency Foil Blankets 210 x 160cm - Camping, Baby Sensory Foil Blanket Insulated Survival Blankets --- ## 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.us/products/691718937-ultra-light-21w-portable-solar-charger-with-usb-a-c](https://www.desertcart.us/products/691718937-ultra-light-21w-portable-solar-charger-with-usb-a-c) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-25*