📸 Quick Look (Images)
🇺🇸 USA Buyer Note: Comparing hiking gear helps beginners avoid wasting money. Below is a simple, fast comparison so you can pick what fits your needs.
💰 Current Amazon Price
Price: $139.99 - $129.99
(as of Dec 16, 2025 13:04:19 UTC –
Details
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⚖️ Quick Comparison
| Best For | Beginner hikers, day hikes, weekend trips (USA) |
| Value | Great value vs. similar Amazon options |
| Comfort | Designed for long walks and trail use |
| Durability | Suitable for common U.S. hiking conditions |
| Ideal Use | Parks, local trails, national parks, travel hikes |
🆚 How It Compares
- Vs. cheaper options: often better comfort + longer lifespan.
- Vs. premium options: similar core features, usually lower cost.
- For beginners: easier setup and fewer “extra” features you don’t need.
📝 Product Details
Product description
PRODUCT OVERVIEW VIDEO
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.
PRODUCT DETAILS AND DESCRIPTION
Powerful, compact, weatherproof and multi-use – the SunJack 40W folding solar charger is an all around solar panel that does it all and is perfect for outdoor adventures, camping, power outages, emergencies and more!
RUGGED & DURABLE: Designed for all weather conditions and environments. The waterproof ETFE exterior layer improves performance and durability, extends the panel’s lifespan and requires far less maintenance when compared to a PET exterior layer that is used by most portable solar chargers. The USB ports are waterproof rated IP67 – the PCB is coated with a waterproof seal and the junction box is silicone bonded to the panel. Waterproof, shock-proof, dust-proof and drop-proof. Designed for all weather conditions and environments.FOLDABLE, COMPACT & PORTABLE: Comprised from 4 connected solar panels, the panels fold down to the size of a laptop and easily fits into most backpacks. The integrated pocket provides storage space for electronics and accessories, and its mesh design intuitively allows proper airflow to prevent devices from overheating. The elastic straps secure phones, power banks and more during storage and transportation.POWERFUL & FAST CHARGING SPEEDS: With up to 40 watts of power, the monocrystalline panels with ETFE construction provide maximum efficiency and UV-ray permeability. The 21V DC5521 port (25.1V open circuit voltage) provides enough charging power for most power stations and DC powered devices, while the dual USB ports allow you to charge USB-C (PD 30W) and USB-A (18W max) devices. The ETFE construction provides a UV permeability of 95% compared to 80% from PET – makes the panels more efficient than other solar chargers.SMART TECHNOLOGY: The panel includes multiple smart IC chips allowing the USB ports charge simultaneously with the DC port, at the most efficient voltage, and provide the quickest, yet safest, charging speed. Short circuit, over-load, over-heat, over-charge, over-voltage, and current limiting protection. Automatic restore if shade occurs.PREMIUM FEATURES & DESIGN: Includes everything you need for seamless charging on the go. The built-in kickstands allow you to angle the panels towards the sun or, alternatively, attach the included carabiners to the panel’s grommets and hang the panels from different objects. The included adapter cable and DC plug adapters ensure compatibility with a wide range of devices.MULTI-USE: Compact enough to easily transport and powerful enough to charge most devices. Ideal for camping, backpacking, hiking, outdoor adventures and is essential in any disaster, emergency, and hurricane prep kit for survival. This panel can charge a wide range of electronic devices, including devices such as power stations that accept DC, as well as any USB device including your iPhone, Samsung, Pixel, iPad, laptops, power banks and more. An excellent solar charger for cell phone. Never be caught without power.SUNJACK: Purchase SunJack products with confidence. Designed and engineered in the USA and backed by a local American company. If you have any questions or experience any issues, we are here to help. With SunJack as your personal power companion, never be caught without power!
PRODUCT FEATURES 
Adjustable Angle Solar Panels
The adjustable kickstands allow you to angle the solar panels towards the sun so that they receive direct and maximum sunlight exposure.
Store Devices & Accessories
Pocket has ample space and elastic straps secure devices during transport. The mesh design allows airflow to prevent devices from overheating.
Multiple Output Port Options
Compatible with multiple different devices. Charge USB devices using the USB-A (18W max) or USB-C (PD30). Charge power stations using the DC5521 port.
Waterproof Design & Materials
ETFE technology is waterproof and improves performance and durability. The junction box and output ports are waterproof rated IP67.
TECHNICAL SPECIFICATIONS
Solar Capacity 40 Watts Solar Cell Type Monocrystalline Outer Construction ETFE Dimensions (Folded) 9″ x 12.5″ x 1.5″ Dimensions (Open) 35.5″ x 12.5″ x 1″ Net Weight 3.5 lbs (1.59 kg) Output Port 1 USB-C (PD 30W) Output Port 2 USB-A (5V/3A, 9V/2A, 12V/1.5A) Output Port 3 DC5521 (21V) Rated Peak Power (Pmax |W) 40 Watts Open Circuit Voltage (Voc |V) 25.1 V Short Circuit Current (Isc |A) 2 A Max Power Voltage (Vmp|A ) 20.9 V Max Power Current (Imp |A) 1.9 A Operating Temperature (°F/°C) -4°F to 149°F (-20°C to 65°C) Standard Test Conditions 1000W/m2, 25°C, AM1.5
SUNJACK SOLAR PANELS
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Customer Reviews
4.4 out of 5 stars 382
4.4 out of 5 stars 382
4.2 out of 5 stars 8
4.4 out of 5 stars 382
4.4 out of 5 stars 186
4.4 out of 5 stars 382
4.2 out of 5 stars 57
Price
$129.99$129.99
$174.99$174.99
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$79.99$79.99
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$59.99$59.99
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Total Watts
40 Watts
60 Watts
60 Watts
25 Watts
25 Watts
15 Watts
15 Watts
ETFE Technology
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USB-C Port
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USB-A Port
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DC5521 Port
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Splitter Adapter Cable
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Parallel Adapter Cable
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Power Bank(s)
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Constructed with rugged ETFE and waterproof IP67-rated ports, this portable solar panel stands up to extreme weather and wear, making it one of the most reliable solar panels portable on the market.
Premium design features like integrated kickstands, carabiners, and waterproof casing make this foldable solar panel easy to use in any terrain, whether flat, angled, or hanging in direct sunlight.
Collapsible 4-panel setup folds to the size of a tablet for compact travel; a must-have compact solar panel and camping solar panel that fits easily in most backpacks for fast access on the trail.
Delivers up to 40 watts with high-efficiency ETFE monocrystalline cells; fast-charges power stations via DC output and USB devices via solar panel usb c and USB-A QC3.0 for high-speed outdoor power.
Features PD30W USB-C, dual USB ports, and DC output that can charge simultaneously thanks to advanced IC chip tech—making it a top-tier usb solar panel charger and solar panel portable charger.
Includes: 1x Adapter cable (DC5521 to DC5521/XT60/Anderson), 10x DC adapter plugs, 2x carabiners, product manuals and a quickstart guide.
Designed in the USA, backed by a hassle free warranty from a local American company with easy-to-reach customer service. If you have any questions or experience any issues, we are here to help.
⭐ Summary (Why We Recommend It)
Customers say
Customers find the solar panel provides ample power for electronics and works well in low light conditions, with one customer reporting it charged their iPhone from 20% to 100%. Moreover, the panel is solidly built, durable, and compact enough to fit in a backpack, making it suitable for camping trips. However, customers disagree on the power output, with some saying it delivers serious power while others find it underpowered. Additionally, opinions on value for money are mixed, with some finding it worth the money while others consider it too expensive.
- ✔ Beginner-friendly (no learning curve)
- ✔ Strong value for money (Amazon USA)
- ✔ Comfortable for day hikes & weekend trips
- ✔ Good choice for most U.S. trail conditions
👉 Check Today’s Price on Amazon
❓ Quick FAQ
Is this good for beginners?
Yes. It’s a practical pick for first-time hikers who want dependable gear without overspending.
Who should buy this?
- • New hikers building a starter kit
- • Budget-focused shoppers in the USA
- • Anyone wanting reliable gear for trails and parks
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