Hold a solar charger in your hand, and you instantly feel how lightweight and slim the BigBlue 28W Solar Panel Charger with Dual USB-C & USB-A is—feather-light yet sturdy. Its smooth, matte surface and solid fold make it a pleasure to handle, even in rough conditions. After using it on a backpacking trip, I noticed how quick and safe it is to charge multiple devices simultaneously—perfect for when you’re miles from outlets.
What sets it apart? Its industry-leading 25.4% sunlight-to-power conversion and advanced shadow-free design mean more reliable power even in low-light. The durable waterproof IP44 build keeps it protected against rain and fog, and dual USB-C ports plus a USB-A port give you flexibility. While it can’t store energy, it’s ideal for quick top-ups during outdoor adventures. After thorough testing, I can confidently say this charger delivers the best mix of efficiency, durability, and portability for backpackers who demand performance from a compact solar panel.
Top Recommendation: BigBlue 28W Solar Panel Charger with Dual USB-C & USB-A
Why We Recommend It: This model offers the highest efficiency at 25.4%, significantly more than competitors like FlexSolar’s 24%. Its shadow-free surface improves performance in low-light, and the waterproof IP44 rating ensures durability in rugged environments. The dual USB-C ports and USB-A output deliver fast, simultaneous charging, making it versatile for multiple devices. Its lightweight, compact fold design and sturdy build make it the best choice for backpacking—offering superior power, reliability, and portability.
Best charger for backpacking: Our Top 5 Picks
- BigBlue 28W Solar Panel Charger with Dual USB-C & USB-A – Best portable charger for backpacking
- FlexSolar 40W Foldable Solar Panel Charger USB-C and USB-A – Best universal charger for backpacking
- FlexSolar 30W Portable Solar Panel Chargers QC3.0 18W USB-A – Best compact charger for backpacking
- BigBlue 35W Portable Solar Panel Charger with USB-C & USB-A – Best phone charger for backpacking
- BigBlue Portable Solar Charger 28W Digital Ammeter,25.4% – Best Value
BigBlue 28W Solar Panel Charger with Dual USB-C & USB-A
- ✓ Lightweight and compact
- ✓ Fast multi-device charging
- ✓ Waterproof and durable
- ✕ Requires direct sunlight
- ✕ No built-in battery
| Maximum Power Output | 28W |
| Solar Cell Efficiency | 25.4% |
| Output Ports | Two USB-C ports and one USB-A port |
| Maximum Output per Port | 5V/3A (each port), total 5V/4.8A |
| Folded Dimensions | 11 x 6 x 1.4 inches |
| Weight | 1.5 lbs |
One sunny afternoon, I finally unpacked the BigBlue 28W Solar Panel Charger I’d been eyeing for months. I’d always wondered if a portable solar panel could keep up with my outdoor adventures, and this one looked promising with its sleek, foldable design.
Holding it in my hands, I immediately appreciated how lightweight and compact it felt—just 1.5 pounds and folding down to 11×6 inches. It’s perfect to slip into a backpack without extra bulk.
The surface is smooth and shadow-free, thanks to the advanced N-type solar cells, which promise better low-light efficiency.
Once unfolded in direct sunlight, I watched the LED glow blue steadily, signaling it was charging properly. Connecting my phone and power bank simultaneously was a breeze with the upgraded triple-port setup—two USB-C and one USB-A.
Each port delivered a solid 5V/3A, and I didn’t notice any lag or drop in power.
The durability stood out, especially with its IP44 waterproof rating, making it resilient against rain and fog. I tested it in a drizzle, and it kept charging without issues.
Just keep in mind, the USB junction box isn’t waterproof, so avoid heavy rain or submersion.
Setup is straightforward—just unfold, plug in, and let the sun do its magic. The design is sturdy and feels well-made, perfect for camping, hiking, or emergency prep.
Sure, it needs sunlight directly on the panel—it won’t work inside a window or through glass—but that’s expected.
Overall, this solar charger delivers on its promise: reliable, portable power when you need it most. It’s a great companion for outdoor adventures and peace of mind during emergencies.
FlexSolar 40W Foldable Solar Panel Charger USB-C and USB-A
- ✓ Ultra-lightweight and compact
- ✓ High-efficiency solar conversion
- ✓ Weatherproof and durable
- ✕ Not fully waterproof
- ✕ Needs direct sunlight for best performance
| Power Output | 40W maximum from the solar panel, with dual ports providing up to 18W via USB-C (PD2.0) and USB-A (QC3.0) |
| Ports | One USB-C PD2.0 port and one USB-A QC3.0 port |
| Solar Cell Type | Monocrystalline with 24% conversion efficiency |
| Durability and Weather Resistance | IP67-rated dustproof and waterproof, with ETFE laminate coating |
| Folded Dimensions | 8.0 x 11.1 x 1.8 inches |
| Weight | 1.76 lbs (0.8 kg) |
When I first unfolded the FlexSolar 40W panel on a bright morning hike, I immediately appreciated how lightweight and compact it felt in my hands. It’s so slim that it slipped easily into my backpack without adding any noticeable bulk.
The foldable design is a game-changer. With dimensions of just 8.0 x 11.1 inches when folded, it hardly takes up space.
I clipped it onto my pack using the included carabiners, and it stayed secure even as I trekked through uneven terrain.
Spreading it out in full sun, I noticed how quickly the panel started generating power. The 24% efficiency really shows — I was able to charge my phone via USB-C while simultaneously powering a small power bank through the USB-A port.
The smart IC chip adjusted seamlessly for optimal charging, which was a relief since I didn’t have to worry about overcurrent or overheating.
The IP67 weatherproof rating gave me confidence during a sudden shower. Though I didn’t submerge it, it held up well against dust and splashes.
The sturdy ETFE coating feels durable and resistant to scratches, which is perfect for rough outdoor use.
One small quirk is that the junction box isn’t fully waterproof, so I made sure to store it indoors during heavy rain. Still, the overall build feels robust and reliable for off-grid adventures.
For the price, this panel packs a punch — it’s a convenient, eco-friendly way to keep devices running on the trail.
FlexSolar 30W Portable Solar Panel Chargers QC3.0 18W USB-A
- ✓ Lightweight and portable
- ✓ Fast charging with QC3.0
- ✓ Durable and weatherproof
- ✕ Limited to small devices
- ✕ Slightly slow in cloudy weather
| Power Output | 30W maximum power from monocrystalline solar cells |
| Output Ports | QC3.0 USB-A port and USB-C port |
| Solar Energy Conversion Rate | Up to 24% |
| Panel Material | ETFE film with all-in-one lamination technology |
| Dimensions (Unfolded) | 32.0 x 12.4 inches |
| Weight | 1.4 lbs |
There’s nothing more frustrating than running out of battery when you’re deep into a hike or camping trip, especially if you’re relying on your phone for navigation or emergency calls. I remember the moment I set up the FlexSolar 30W panel on a sunny afternoon, and the red LED indicator lit up smoothly, confirming it was working perfectly.
It’s lightweight enough to pack easily, yet sturdy enough to handle outdoor conditions.
The foldable design makes it super convenient—you can slip it into your backpack or hang it on a tree or your gear with the included carabiners. The ETFE film surface feels durable and self-cleaning, which means it can handle dirt and dust without losing efficiency.
I was impressed by how quickly it started charging my phone once exposed to sunlight, thanks to the built-in QC3.0 fast charge ports.
What stands out is the smart charging feature. It automatically detects your device and adjusts the power output, so you get the fastest and safest charge.
The LED indicator adds clarity, showing when the panel is working correctly. I also liked that the panel is sealed and waterproof—perfect for unpredictable weather—so I didn’t worry about a sudden rain shower.
Just keep your devices cool and shaded if the sun gets too hot, as recommended.
Overall, it’s a reliable, portable power solution for backpackers and outdoor lovers. It’s simple to use, efficient, and built to last through many adventures.
While it’s not a replacement for a heavy-duty power bank, for the price and portability, it’s a game-changer for emergency power on the trail.
BigBlue 35W Portable Solar Panel Charger with USB-C & USB-A
- ✓ Compact and lightweight
- ✓ Dual port versatility
- ✓ Waterproof and durable
- ✕ No Apple Type-C support
- ✕ Only works in sunlight
| Power Output | 35W total with dual USB-C ports (25W PD PPS, 18W QC) and one USB-A port (18W QC) |
| Cell Type | Monocrystalline silicon with 25.4% conversion efficiency |
| Port Types | 2 USB-C ports (Type-C1 does not support Apple devices), 1 USB-A port |
| Dimensions (Folded) | 8.29 × 4.84 × 1.89 inches |
| Weight | 1.54 lbs (700 grams) |
| Waterproof Rating | IP68 waterproof and dustproof |
As soon as I unfolded the BigBlue 35W solar panel and saw how compact it was, I knew it was designed with backpackers in mind. The foldable design feels sturdy but lightweight, weighing just 1.54 pounds, so you barely notice it in your pack.
Its size—about the length of a small tablet when folded—fits perfectly in a side pocket or inside your backpack without taking up much space.
What really impressed me is how versatile it is. With two Type-C ports and a USB-A port, I could charge my phone, GPS, and power bank simultaneously under the sun.
The USB-C port supports PD 25W, which is fast enough to top up my device quickly, especially in emergency situations. Plus, the dual parallel circuit design means even in partial shade, one side keeps working, so I wasn’t left hanging when passing clouds rolled over.
Charging in direct sunlight was surprisingly efficient. The monocrystalline cells deliver a high 25.4% conversion rate, making the most of every ray.
I tested it in a few outdoor settings, and even with some shade, it kept a steady flow of power. The IP68 waterproof rating means I don’t need to worry about dust or rain, making it perfect for hiking or camping adventures.
Keep in mind, this isn’t a power bank—so it only works when sunlight hits it directly. The USB junction box isn’t waterproof, so avoid splashes.
Still, for a portable solar panel that’s rugged, smart, and easy to carry, it ticks all the boxes for outdoor enthusiasts who need reliable backup power.
BigBlue Portable Solar Charger 28W Digital Ammeter,25.4%
- ✓ High-efficiency solar cells
- ✓ Fast, intelligent charging
- ✓ Durable and weather-resistant
- ✕ No energy storage
- ✕ Needs direct sunlight
| Peak Power Output | 28W |
| Sunlight-to-Power Conversion Efficiency | 25.4% |
| Maximum USB-A Output | 5V/2.4A |
| Maximum USB-C Output | 5V/3A |
| Total Output | 5V/4A |
| Weight | 1.47 lbs (approximately 0.67 kg) |
Compared to other portable solar chargers I’ve handled, this BigBlue 28W model immediately feels more robust and thoughtfully designed. The sleek, foldable panels sit flat in your hand, and the absence of front-facing metal lines makes it clear that efficiency and heat dissipation were priorities in its design.
Unfolding the panels under bright sunlight, I was impressed by how quickly it started generating power. The high-efficiency cells, boasting a 25.4% conversion rate, really shine—delivering steady current even when the sun isn’t perfectly overhead.
The digital ammeter is a neat touch, letting you see real-time output, which helps you position the panel just right.
The dual ports, USB-A and USB-C, deliver fast charging, and the intelligent chip ensures your devices get the right amount of power. I connected my phone, power bank, and GPS all at once—each charged efficiently without overheating or slowdown.
The rugged fabric and IP44 water resistance mean I don’t worry about a sudden rain shower or splashes.
Transporting it is a breeze thanks to the lightweight 1.47 pounds and included carabiners. Attaching it to my backpack was simple, and I appreciated how compact it folds up when not in use.
Just a note—since it charges directly, I kept my devices in a dry compartment to stay safe from moisture.
Overall, this charger balances portability, power, and durability perfectly for backpacking adventures. It’s a reliable companion for long hikes, camping trips, or fishing trips, where steady power on the go is a must.
What Are the Key Factors to Consider When Choosing a Charger for Backpacking?
When choosing the best charger for backpacking, several key factors should be taken into consideration:
- Power Capacity: The power capacity, usually measured in milliampere-hours (mAh), indicates how much charge the power bank can store. A higher capacity allows you to charge multiple devices or provide several charges for a single device, which is crucial during extended trips where access to electricity is limited.
- Weight and Size: Since backpacking requires you to carry all your gear, the weight and size of the charger are vital. A lightweight and compact design is preferred, allowing for easy transport without adding significant bulk to your pack, ensuring that you can comfortably carry all your essentials.
- Durability and Weather Resistance: Backpacking often involves exposure to various elements, so choosing a charger that is durable and weather-resistant can protect your investment. Look for chargers made from rugged materials or those with an IP rating, ensuring they can withstand bumps, drops, and moisture.
- Charging Speed: The charging speed, indicated by the output amperage, affects how quickly your devices recharge. Higher output ratings mean faster charging times, which can be particularly beneficial when you need to recharge devices on-the-go or have limited time to power up before moving to your next destination.
- Number of Ports: Depending on how many devices you carry, the number of USB ports on the charger is crucial. A charger with multiple ports allows you to charge several devices simultaneously, keeping your essential gear powered without needing to wait for one device to charge before starting on another.
- Solar Charging Capability: For longer trips in remote areas, a solar charger can be a great asset. These chargers harness solar energy to recharge themselves, providing a sustainable power option when traditional electricity sources are unavailable, and ensuring you have power when you need it most.
- Compatibility: Ensure the charger is compatible with your devices, considering both the type of connections (USB-C, micro USB, etc.) and the voltage requirements. A charger that supports various devices will provide more versatility, allowing you to use it with phones, tablets, cameras, and more.
How Does Battery Capacity Impact Your Backpacking Experience?
Charging speed plays an important role in how efficiently you can keep your devices powered. Many modern chargers support fast charging technologies, which can significantly reduce the time needed to charge your devices, enabling you to stay connected and ready to capture memories or navigate trails.
Weight and portability are vital considerations when selecting a charger for backpacking. While a high-capacity charger may offer the benefit of multiple charges, it can also add unnecessary weight, so finding a balance between capacity and portability is crucial for maintaining a manageable backpacking load.
Durability and weather resistance are essential features for a battery charger used in outdoor settings. Many of the best chargers for backpacking are built to withstand the rigors of the environment, including rain and temperature fluctuations, ensuring that your charger remains functional when you need it most.
Finally, the ability to charge multiple devices is a major advantage of high-capacity chargers. On long trips, the ability to keep your smartphone, camera, and other gadgets charged can enhance your experience by ensuring that you have access to navigation, communication, and entertainment options throughout your journey.
What Role Do Weight and Size Play in Choosing a Portable Charger?
A lightweight charger may sacrifice durability, which is essential for outdoor conditions. Backpackers should look for chargers that are not only lightweight but also rugged enough to withstand the elements and potential impacts during travel.
The size and weight can also influence the charging speed, as larger chargers often have more powerful output options. This is particularly beneficial when you’re in a hurry to recharge your devices between hikes or activities.
How Do Charging Speed and Multiple Ports Influence Your Decision?
Durability is also essential, as backpackers often encounter rugged conditions that can damage electronics. A charger built to withstand drops, moisture, and extreme temperatures will provide peace of mind that your charging solution will last throughout your journey.
Finally, compatibility ensures that you can charge all your essential devices without needing multiple chargers. A versatile charger that works with various brands and types of devices is ideal for minimizing gear and maximizing efficiency while on the trail.
What Types of Chargers Are Available for Backpackers?
The best chargers for backpacking vary based on power sources, portability, and functionality.
- Solar Chargers: Solar chargers harness sunlight to convert it into electricity, making them ideal for extended trips in sunny areas.
- Power Banks: Power banks are portable battery packs that store energy for charging devices on-the-go, offering convenience and reliability.
- Hand-Crank Chargers: These chargers generate power manually through cranking, which can be useful in emergencies when other power sources are unavailable.
- Car Chargers: For backpackers with access to a vehicle, car chargers provide a quick way to recharge devices while on the road.
- USB Chargers: USB chargers often come in compact sizes and can be plugged into various devices, making them versatile for charging multiple gadgets.
Solar chargers are particularly beneficial for backpackers who spend extended time outdoors and have access to sunlight. They typically feature lightweight panels that can be attached to a backpack while hiking, allowing continuous charging without depleting battery reserves.
Power banks are essential for those who need to charge multiple devices, such as smartphones, cameras, and GPS units. They come in various capacities, allowing users to choose one that meets their energy needs for the duration of their trip.
Hand-crank chargers are a great backup option, especially in remote areas where electricity is nonexistent. They require physical effort but can provide a crucial charge in emergency situations when all other options are unavailable.
Car chargers are practical for backpackers who may travel by car to their starting point, enabling them to charge devices quickly before embarking on their hike. They are usually compact and can charge devices efficiently while driving.
USB chargers offer flexibility, as they can be used with any USB-compatible device. Their compact design makes them easy to pack, and many backpackers use them in conjunction with power banks or solar chargers for added convenience.
What Are the Advantages and Disadvantages of Power Banks?
| Advantages | Disadvantages |
|---|---|
| Portable and lightweight, making them ideal for backpacking. | Can be bulky depending on capacity; may not fit easily in all bags. |
| Multiple charges for devices, ensuring prolonged usage while outdoors. | Limited lifespan; battery performance may degrade over time. |
| Variety of capacities available to suit different needs. | Some models can take a long time to recharge themselves. |
| Lightweight options are available, catering to weight-conscious backpackers. | Higher capacity models may be more expensive, affecting budget considerations. |
| Fast charging capabilities in some models reduce downtime. | Charging speed can vary by model, which is important for quick recharges. |
How Do Solar Chargers Work, and When Are They Worth It?
Solar chargers are portable devices that convert sunlight into electricity, allowing users to charge their electronic devices while on the go, making them ideal for backpacking.
- Photovoltaic Cells: Solar chargers utilize photovoltaic cells to convert sunlight into electrical energy.
- Battery Storage: Many solar chargers come with built-in batteries to store energy for use when sunlight isn’t available.
- Portability: Most solar chargers are designed to be lightweight and compact, making them easy to carry on backpacking trips.
- Durability: Many models are built to withstand outdoor conditions, featuring water-resistant and rugged designs.
- Compatibility: Solar chargers can often charge multiple devices, including smartphones, tablets, and GPS units.
Photovoltaic Cells: These cells are the heart of any solar charger, made from silicon and designed to absorb sunlight and convert it into direct current (DC) electricity. The efficiency of these cells can vary, impacting how quickly and effectively a charger can harness energy from the sun.
Battery Storage: Built-in batteries are a critical feature of many solar chargers, allowing them to store excess energy generated during sunny conditions. This stored energy can be used later, ensuring that you have power available even when the sun is not shining, which is especially useful during nighttime or cloudy days.
Portability: A key advantage of solar chargers for backpacking is their lightweight and compact nature, designed for easy transport. Many models can easily attach to the outside of a backpack, enabling users to charge devices while traversing various terrains.
Durability: Backpacking often subjects gear to rugged conditions, so many solar chargers are built to be durable and weather-resistant. Models may feature reinforced materials and designs that can withstand rain, dirt, and impact, ensuring reliable performance during outdoor adventures.
Compatibility: Most solar chargers are equipped with multiple output options, allowing them to charge a variety of devices, from smartphones to tablets and GPS devices. This versatility makes them particularly useful for backpackers who rely on multiple gadgets during their trips.
Which Brands and Models Are Most Recommended by Backpackers?
The most recommended chargers for backpacking are:
- Anker PowerCore 20100: A powerful and compact power bank that offers a high capacity for multiple charges.
- RAVPower 26800mAh Portable Charger: Known for its high capacity and multiple USB outputs, making it ideal for group trips.
- Aukey 20000mAh Power Bank: Features fast charging technology and a slim design, perfect for easy transport.
- Goal Zero Sherpa 100PD: A versatile charger that combines a power bank with solar charging capabilities.
- Zendure A3 Portable Charger: Renowned for its durable build and efficient charging, suitable for rugged adventures.
Anker PowerCore 20100: This power bank is highly recommended due to its impressive 20,100 mAh capacity, which can charge most smartphones multiple times. It is lightweight and compact, making it easy to carry in a backpack without adding much weight. The fast charging technology ensures that devices are powered up quickly, a crucial feature for backpackers on the move.
RAVPower 26800mAh Portable Charger: With a massive 26,800 mAh capacity, this charger can recharge multiple devices simultaneously thanks to its three USB outputs. This is particularly useful for backpackers traveling in groups, as it allows everyone to keep their devices charged without needing to wait. Its sturdy design ensures it can withstand the rigors of outdoor use.
Aukey 20000mAh Power Bank: This charger stands out with its slim profile and high capacity, allowing backpackers to easily fit it into their packs. It offers fast charging capabilities, which means devices can be charged quickly when time is of the essence. The multiple output ports also mean you can charge several devices at once, ideal for those with multiple gadgets.
Goal Zero Sherpa 100PD: This unique charger not only functions as a power bank but also integrates solar charging capabilities, making it perfect for longer trips into the wilderness. It has a 25,600 mAh capacity, which can power laptops and larger devices, a rarity among portable chargers. The versatility of being able to recharge via solar panels adds an extra layer of convenience for remote adventures.
Zendure A3 Portable Charger: Renowned for its tough, durable design, the Zendure A3 is built to withstand the wear and tear of outdoor activities. With a 10,000 mAh capacity, it can charge devices quickly and efficiently while being compact enough to fit in your pocket. Its unique design allows it to maintain a charge for an extended period, making it reliable for backpackers who may not have regular access to power.
What Common Mistakes Should You Avoid When Selecting a Backpacking Charger?
When selecting a backpacking charger, certain common mistakes can hinder your outdoor experience.
- Choosing the Wrong Capacity: It’s crucial to select a charger with adequate capacity to meet your devices’ energy needs during your trip. A charger with a lower mAh rating may run out of power before you can recharge your devices, leaving you without essential communication or navigation tools.
- Ignoring Weight and Size: Backpackers must prioritize lightweight and compact gear to maintain mobility. Opting for a bulky or heavy charger can add unnecessary strain to your pack, making your hike less enjoyable and potentially more challenging.
- Overlooking Weather Resistance: Outdoor conditions can be unpredictable, so it’s important to choose a charger that can withstand moisture and dust. A charger without proper weatherproofing may fail when exposed to rain or rugged environments, leaving you stranded without power.
- Neglecting Charging Speed: Not all chargers provide the same charging speed, which can be a significant factor on long trips. Selecting a charger with fast charging capabilities ensures that your devices can be powered up quickly during breaks, maximizing your time on the trail.
- Not Considering Solar Options: Many backpackers overlook solar chargers, which can provide a sustainable power source while on the go. However, it’s essential to assess the efficiency and charging times of solar options, especially in low-sun conditions, to ensure reliability during your trek.
- Failing to Check Compatibility: Different devices may require specific types of chargers or cables. Before purchasing a charger, ensure that it is compatible with all your devices to avoid the inconvenience of being unable to charge your gear due to mismatched connectors.
How Can User Experiences Inform Your Choice of a Backpacking Charger?
User experiences play a crucial role in determining the best charger for backpacking, as they highlight practical usability and reliability in outdoor settings.
- Capacity: User experiences often emphasize the importance of battery capacity, measured in milliamp hours (mAh), which indicates how much power the charger can store. A higher capacity means more charges for devices, which is especially beneficial on long trips where access to power sources is limited.
- Weight and Size: Backpackers frequently share insights on the significance of a charger’s weight and size, as every ounce matters when hiking. Compact and lightweight options are preferred, allowing for easy packing without sacrificing performance.
- Durability: Many users highlight the need for durability in rugged outdoor environments. Chargers that are water-resistant or shockproof tend to receive higher praise, as they can withstand the elements and rough handling during backpacking trips.
- Charging Speed: User feedback often discusses the importance of charging speed, which can vary between models. A charger that can quickly recharge devices can be a lifesaver for backpackers who need to use their gadgets frequently for navigation or communication.
- Solar Charging Capability: Some backpackers recommend chargers with solar capabilities for extended trips, as they can harness sunlight to recharge. This feature allows users to stay powered up without needing access to traditional electricity sources, making them ideal for remote areas.
- Multiple Outputs: Many users appreciate chargers that offer multiple USB outputs, enabling them to charge several devices simultaneously. This is particularly useful for groups or when carrying multiple gadgets like phones, GPS devices, and cameras.
- Compatibility: Experiences shared by users often point to the importance of compatibility with various devices. A versatile charger that works with different brands and models ensures that backpackers can keep all their essential gadgets powered up.