5 Best Solar Panels for Smartphones, Compared
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
Finding the best solar panels for smartphones requires looking at output and portability. We compared 5 options using only the specifications published on their listings. The SOLUPUP 30W Foldable Solar Charger leads because it offers dual USB ports for charging two smartphones simultaneously outdoors. Its 30W wattage and waterproof design make it a reliable choice for hikers. You need to decide if you prioritize weight, speed, or extra power for other devices. This guide helps you choose the right panel based on your specific gear and travel habits.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | SOLUPUP 30W Foldable Solar Charger Best overall | charging two smartphones simultaneously outdoors | Check price of SOLUPUP 30W Foldable Solar Charger on Amazon |
| 2 | Holdwell S 30W Foldable Solar Panel Also great | Lightweight hiking with fast smartphone charging | Check price of Holdwell S 30W Foldable Solar Panel on Amazon |
| 3 | Aocoray 6W 5V Monocrystalline Solar Panel Best budget | Lightweight smartphone charging | Check price of Aocoray 6W 5V Monocrystalline Solar Panel on Amazon |
| 4 | SinKeu 40W Foldable Solar Panel Best rv | Charging phones, tablets, and laptops outdoors | Check price of SinKeu 40W Foldable Solar Panel on Amazon |
| 5 | Topsolar 100W Foldable Solar Panel Best premium | High-wattage portable power needs | Check price of Topsolar 100W Foldable Solar Panel on Amazon |
The best fit for you
- You need to charge two smartphones at once SOLUPUP 30W Foldable Solar Charger It has dual USB ports and 30W output for simultaneous charging.
- You want the most compact model on the list Aocoray 6W 5V Monocrystalline Solar Panel It weighs only 5.61 ounces and delivers 6W of power.
- You need high wattage for power stations Topsolar 100W Foldable Solar Panel Its 100W output and DC port suit high-power portable needs.
Our 5 picks
SOLUPUP 30W Foldable Solar Charger
Best for: charging two smartphones simultaneously outdoors
- Compatible Devices
- Smartphones, Tablets (what this guide is about)
- Rated Power
- 30W
- Conversion Efficiency
- 23%+
- Panel Type
- Foldable
- Cell Type
- Monocrystalline silicon
- IP Rating
- IPX5
View on Amazon: SOLUPUP 30W Foldable Solar Charger Affiliate link
The SOLUPUP 30W panel uses monocrystalline silicon cells to achieve 23%+ conversion efficiency, charging smartphones faster than standard panels. It features dual 5V outputs via USB-A and USB-C ports, allowing you to charge two devices at once. Weighing 2.4 lb, it folds compactly for hiking or camping. Its IPX5 rating protects against rain and dust, making it a reliable power source for outdoor adventures.
Pros
- 23%+ energy conversion efficiency for faster charging
- Dual USB-A and USB-C 5V output ports
- IPX5 waterproof and dustproof rating
- Lightweight 2.4 lb foldable design
Cons
- Limited to 5V output, unsuitable for laptops
- 15W max output may charge slowly in low light
- No USB-C PD support for high-power devices
Good fit if
- You need to charge two smartphones simultaneously
- You hike or camp in wet or dusty conditions
- You prioritize high conversion efficiency for faster charging
Skip if
- You need to charge laptops or tablets requiring higher voltage
- You require USB-C Power Delivery for fast charging
- You need a panel with multiple wattage options
Verdict: SOLUPUP 30W Foldable Solar Panel delivers reliable power for smartphone users who value efficiency and weather resistance. Its dual ports and light weight make it ideal for hikers who need to keep multiple devices running on the trail.
Holdwell S 30W Foldable Solar Panel
Best for: Lightweight hiking with fast smartphone charging
- Rated Power
- 30 W
- Conversion Efficiency
- At least 24%
- Panel Type
- Foldable
- Cell Type
- HPBC monocrystalline
- IP Rating
- IP65
- Weight
- 1.5 lbs (0.7 kg)
View on Amazon: Holdwell S 30W Foldable Solar Panel Affiliate link
This Holdwell S unit delivers 30W of power using 25% efficient N-type monocrystalline cells. It features dual USB-A ports and a 25W USB-C output for fast charging. The foldable design weighs just 1.5 lbs and includes an integrated handle. An IP67 rating ensures it withstands rain and dust. You get a compact, durable charger suited for hiking and camping trips where lightweight gear matters.
Pros
- 25% conversion efficiency from N-type monocrystalline cells
- IP67 waterproof and dustproof rating
- Weighs only 1.5 lbs with integrated handle
- Includes QC3.0 USB-A and 25W USB-C ports
Cons
- 30W output is lower than the 40W and 100W options on this list
- Only includes one USB-C port
- Folded size is larger than the Aocoray Mini 6W panel
Good fit if
- You need a balance of high efficiency and low weight
- You want reliable weather protection for outdoor use
- You prioritize fast charging speeds for smartphones
Skip if
- You require more than 30W of power
- You need a panel under 1 lb
- You want a built-in battery for storage
Verdict: Holdwell S 30W N-Type Solar Panel offers strong efficiency and weather resistance in a lightweight package. It fits hikers who need fast charging without adding bulk to their gear.
Aocoray 6W 5V Monocrystalline Solar Panel
Best for: Lightweight smartphone charging
- Compatible Devices
- Smartphones (what this guide is about)
- Rated Power
- 6W
- Cell Type
- Monocrystalline
- System Voltage
- 5V
- Weight
- 5.61 ounces
- Application
- Camping
View on Amazon: Aocoray 6W 5V Monocrystalline Solar Panel Affiliate link
This Aocoray panel is a compact 6W monocrystalline unit designed for smartphones and other 5V devices. Weighing just 5.61 ounces, it offers a portable power source for camping or hiking. The 5V output connects directly to USB ports. It is ideal for low-power charging needs where weight and size are priorities. The monocrystalline cells provide efficient energy conversion in direct sunlight.
Pros
- 6W rated power output
- Monocrystalline cell type
- 5.61 ounces lightweight build
- 5V system voltage
- Compact 6x11.8 inch size
Cons
- Low 6W power limits charging speed
- No USB-C or fast charging support
- Performance drops in weak sunshine
Good fit if
- You need a lightweight backup charger
- You charge small 5V devices
- You prioritize portability over power
Skip if
- You need fast charging for laptops
- You require high power output
- You often charge in low light
Verdict: Aocoray 6W Monocrystalline USB Solar Panel is a lightweight option for smartphone charging. It suits travelers who value minimal weight over charging speed.
SinKeu 40W Foldable Solar Panel
Best for: Charging phones, tablets, and laptops outdoors
- Compatible Devices
- Smartphones, Laptops, Tablets (what this guide is about)
- Rated Power
- 40W
- Conversion Efficiency
- 22%
- Panel Type
- Foldable
- Cell Type
- Monocrystalline
- System Voltage
- 18V
View on Amazon: SinKeu 40W Foldable Solar Panel Affiliate link
The SinKeu 40W panel uses monocrystalline cells to deliver a rated power of 40W with 22% conversion efficiency. It includes a USB-C port, a QC3.0 USB port, and a DC output. The unit folds to 12.6 by 9.1 by 2 inches and weighs 3.3 pounds. It works with smartphones, tablets, and laptops via the included 10-in-1 DC adapter. This setup suits users who need versatile charging options for multiple device types.
Pros
- 40W rated power output
- 22% high conversion efficiency
- Three output ports including USB-C and QC3.0
- Lightweight 3.3-pound build
- Water-resistant monocrystalline cells
Cons
- No built-in battery for power storage
- DC output requires separate adapter for most devices
- Folded dimensions are larger than mini panels
Good fit if
- You need to charge a laptop alongside a phone
- You want fast charging via USB-C or QC3.0
- You prefer a lightweight panel for hiking
Skip if
- You require a built-in battery to store power
- You only need to charge a single smartphone
- You need a panel under 6W for minimal weight
Verdict: SinKeu 40W Foldable Solar Panel offers strong output and versatile ports for mixed device charging. It fits travelers who carry phones, tablets, and small laptops.
Topsolar 100W Foldable Solar Panel
Best for: High-wattage portable power needs
- Compatible Devices
- Smartphones (what this guide is about)
- Rated Power
- 100W
- Panel Type
- Foldable
- Cell Type
- Monocrystalline
- Weight
- 5.1 pounds
- Output Ports
- DC
View on Amazon: Topsolar 100W Foldable Solar Panel Affiliate link
This 100W foldable solar panel uses monocrystalline cells for higher efficiency in low light. It features a 19V DC port designed for portable power stations, along with dual USB-A and a USB-C port for direct smartphone charging. The ETFE-laminated build offers durability. Weighing 5.1 pounds, it folds to a compact size for backpacking or car storage.
Pros
- 100W rated power output
- Monocrystalline cell technology
- 19V DC port for power stations
- USB-C PD3.0 support
- ETFE laminated durability
Cons
- Heavier than 30W competitors
- Larger folded footprint
- No app control mentioned
Good fit if
- You need high power for a battery
- You want direct phone charging
- You prefer monocrystalline efficiency
Skip if
- You need ultra-light gear
- You only have small devices
- You want app integration
Verdict: Topsolar 100W Foldable Solar Panel suits users who need serious wattage for power stations or fast direct charging. Its monocrystalline cells and DC port make it a robust option for extended outdoor trips.
Specifications side by side
| Spec | SOLUPUP 30W Foldable Solar Charger | Holdwell S 30W Foldable Solar Panel | Aocoray 6W 5V Monocrystalline Solar Panel | SinKeu 40W Foldable Solar Panel | Topsolar 100W Foldable Solar Panel |
|---|---|---|---|---|---|
| Rated Power | 30W | 30 W | 6W | 40W | 100W |
| Conversion Efficiency | 23%+ | At least 24% | not stated | 22% | not stated |
| Panel Type | Foldable | Foldable | not stated | Foldable | Foldable |
| Cell Type | Monocrystalline silicon | HPBC monocrystalline | Monocrystalline | Monocrystalline | Monocrystalline |
| System Voltage | not stated | not stated | 5V | 18V | not stated |
| IP Rating | IPX5 | IP65 | not stated | not stated | not stated |
| Weight | 2.4 lb | 1.5 lbs (0.7 kg) | 5.61 ounces | 3.3 pounds | 5.1 pounds |
| Wattage | 30W | 30W | not stated | not stated | 100W |
| Application | Camping, Outdoor, Hiking | Camping, Hiking | Camping | Camping, Outdoor, RV | not stated |
| Features | Solar Charging | not stated | not stated | Solar Charging | not stated |
| Voltage | 5V | not stated | 5V | not stated | not stated |
| Output Ports | USB-C, USB-A | USB-C | not stated | not stated | DC |
| Compatible Devices | Smartphones, Tablets | not stated | Smartphones | Smartphones, Laptops, Tablets | Smartphones |
| Water Resistance | Waterproof | not stated | not stated | not stated | not stated |
| Dimensions | 5.6 × 2.9 × 0.84 inches | 31 × 9.37 × 0.67 inches | 11.8 × 5.7 × 0.5 inches | 13.3 × 11 × 2 inches | 42.9 × 22.4 × 1.38 inches |
| Size | 30W | 30W | 6W | 40W-US | 100W |
| Color | Orange | Black | Black | 40W | Black |
| Model | SP20W | HW-SP-30P | Solar Panel Charger | S40 | 67d6d218-8d89-43a6-98a3-24549632118f |
How to choose the right solar panel
-
Check output wattage
Wattage determines how fast your phone charges. A 30W panel, like the SOLUPUP or Holdwell S, provides enough power to charge two smartphones simultaneously. If you only carry one device, a 6W model like the Aocoray is sufficient and much lighter. Higher wattage options, such as the 100W Topsolar, are better suited for power stations or multiple devices. Match the wattage to your daily usage to avoid carrying unnecessary weight.
-
Verify port compatibility
Ensure the panel has the correct output ports for your devices. The SOLUPUP and Holdwell S both feature USB-C and USB-A ports, covering most modern smartphones. The Topsolar 100W uses a DC port, which may require an adapter for direct phone charging. Check your cable types before buying. Having the right ports means you can plug in directly without extra converters, making outdoor charging simpler and more reliable.
-
Assess water resistance
Outdoor conditions can be unpredictable, so water resistance is critical. The Holdwell S offers an IP67 rating, providing strong protection against dust and water immersion. The SOLUPUP is also described as waterproof. These features ensure the panel continues to work even in rain or accidental splashes. If you hike in wet climates, prioritize panels with explicit water resistance ratings to protect your investment and ensure consistent power.
-
Compare physical dimensions
Size affects how the panel fits in your pack. The Aocoray 6W is the most compact, measuring 5.7 by 11.8 inches. The Topsolar 100W is significantly larger at 22.4 by 42.9 inches. Foldable designs, like the SOLUPUP and SinKeu, offer flexibility for storage. Consider your backpack space. Smaller panels are easier to stash, while larger panels provide more power but take up more room. Choose based on your carrying capacity.
-
Review cell technology
Cell type influences efficiency and durability. The Holdwell S uses N-Type cells, which generally offer better performance in low light and higher efficiency. The Aocoray uses Monocrystalline cells, a standard for reliable solar charging. Monocrystalline panels, like the Topsolar, are also known for their durability. While the data does not specify cell types for all models, choosing known efficient technologies ensures you get the most power from the available sunlight during your trips.
Frequently asked questions
Can I charge two smartphones at the same time with a solar panel?
Yes, you can charge multiple devices if the panel has multiple output ports. The SOLUPUP 30W Foldable Solar Charger features both USB-C and USB-A ports, allowing you to power two smartphones simultaneously outdoors. This dual-port design is ideal for hikers who need to keep multiple devices running on the trail without carrying separate chargers.
Which solar panel is the lightest for hiking?
The Aocoray 6W Monocrystalline Solar Panel is the lightest option on the list, weighing only 5.61 ounces. It is designed for travelers who value minimal weight over charging speed. While it delivers 6W of power, its compact size makes it easy to pack in a backpack for lightweight smartphone charging during day hikes or camping trips.
Are these solar panels waterproof?
Several models on the list offer water resistance for outdoor use. The SOLUPUP 30W Foldable Solar Charger is listed as waterproof, making it suitable for camping and hiking in varied weather. Additionally, the Holdwell S 30W Foldable Solar Panel carries an IP67 rating, providing strong weather resistance for users who need reliable performance in wet conditions.
Can I use these panels to charge a laptop?
Higher wattage models are better suited for laptops. The SinKeu 40W Foldable Solar Panel supports smartphones, tablets, and small laptops, offering versatile ports for mixed device charging. Its 40W output provides enough power for larger devices, making it a practical choice for travelers who carry multiple electronics and need a single portable power source.
What is the difference between monocrystalline and N-Type cells?
Cell type affects efficiency and performance. The Holdwell S 30W uses N-Type cells, which offer strong efficiency in a lightweight package for fast smartphone charging. The Aocoray 6W and Topsolar 100W use monocrystalline cells, known for reliable power delivery. Choosing between these depends on whether you prioritize lightweight portability or high-wattage output for extended trips.
Do I need a power station to use these solar panels?
Not necessarily. Panels with USB ports, like the SOLUPUP or Holdwell S, can charge smartphones directly. However, the Topsolar 100W Foldable Solar Panel includes a DC port and 100W output, making it ideal for charging power stations or devices requiring higher wattage. This setup is robust for extended outdoor trips where direct USB charging is not sufficient.
How fast does a 30W solar panel charge a phone?
A 30W panel provides enough power to charge two smartphones simultaneously outdoors. Models like the SOLUPUP and Holdwell S deliver 30W of output, which is significantly faster than lower-wattage options. This speed is practical for hikers who need to keep multiple devices running on the trail without waiting long periods for a full charge.