Large-sized solar backpacks that have battery banks and multiple USB ports and are weatherproof and durable are great. But in the end, high solar panel wattage defines the gap between the best solar backpack and the rest.
Our Top Picks
- Voltaic Systems Array Rapid Solar Backpack Charger for Laptops – Overall Best Solar Backpack
- ECEEN External Frame Hiking Backpack – Largest Bag Size
- ECEEN Solar Powered Backpack with High-Efficiency Solar Panel
- ECEEN Solar Backpack 7 Watt Solar Panel
- HAWEEL External Frame Backpack
- ECEEN Solar Backpack Foldable Hiking Daypack With 5V Power Supply – Lightweight Solar Backpack
- XTPower Hiking Solar Backpack with Removable 7 Wall Solar Panel
The spatial capacity of a solar-powered backpack depends on its size. The larger the backpack, the more items you can carry in it. Nonetheless, when it comes to solar-powered backpacks and all types of backpacks, size is sometimes subjective. While some people just want something small to fit their mobile gadgets, others prefer a product they can take camping.
Durability is vital for all types of products, and solar backpacks are no different. The best solar backpacks typically resist water and similar weather conditions to a high degree. But beyond that, they are also made with materials that will resist tear as they come under the weight of the load within them.
The USB port is the point of exit of solar power from the solar panel to your mobile device. But if a solar backpack comes with only one port, you will be unable to charge more than one device at once. This is where getting a bag with multiple USB ports reveals its importance.
Anyone who gets a solar backpack is so they can charge their mobile devices with solar power on the go. However, the sun will not be out all day, and in some places, the sun will only be out for a short time. So, if you are to get enough charge on your device within the period the sun shines, you need a solar panel that charges rapidly. Thankfully, you can if the power output of the solar panel is high enough.
Generally, the high the power output or wattage of the solar panels, the faster they will charge your device. Also, high solar panel wattage allows the possibility of charging multiple devices at once.
Another way to get around the absence of the sun is to buy a solar backpack that comes with a battery bank. When the sun is out, you charge the battery bank and simultaneously charge your devices from the battery bank. So, when the sun sets, you have a charged device and a charged battery bank. Of course, since the charged battery bank had stored some power from when the sun was out, you can charge some other device with it.
Our Best Solar Backpack Review
Voltaic Systems Array Rapid Solar Backpack Charger for Laptops
About the Product
The Voltaic Systems Array Rapid Solar Backpack Charger for Laptops features the top amongst our best solar backpacks. We chose it as number one because it has the highest wattage, and it comes with a high-capacity battery.
Beyond the high wattage and high-capacity battery, the Voltaic Systems Array Rapid Solar Backpack Charger for Laptops also has a decent size, and overall, it is pretty water-resistant.
None of the wattages of the other solar backpacks comes close to that of the Voltaic Systems Solar Backpack Charger for Laptops. This product is fitted with a 60-watt monocrystalline solar panel, which apart from being high-performing, is pretty efficient. You can expect an efficiency of around 17 to 20% from the solar cells of this backpack.
With the 60-watt solar panel attached to this backpack, you can charge more than just mobile phones and tablets. You can charge laptops and cameras too.
The high power output of the solar panel of this bag is great, but what makes it even better is the high-capacity battery pack/power bank it comes with. None of the other solar backpacks in this review comes with a battery pack.
The Voltaic Systems Solar Backpack Charger for Laptops features a 19,800 mAh battery pack. So, you can charge the battery with solar power, then use the battery to charge your devices when the sun is not out.
The battery pack of this product is estimated to charge most laptops within 6 hours fully. Then for mobile phones, you can get a full charge within 1-2 hours.
The size of the Voltaic Systems Solar Backpack Charger for Laptops backpack is 25 L. While this is not the largest of the backpacks we reviewed, it is larger than the XTPower Hiking Solar Backpack with a Removable 7 Wall Solar Panel.
Beyond size, this product comes with multiple compartments, including a dedicated compartment for laptops with sizes up to 15 inches. So, you can charge your laptop while on the move.
Each unit of the Voltaic Solar Backpack Charger for Laptops is made from 33 PET bottles. Of course, since they are made from PET, the backpacks are pretty tough and waterproof. But beyond that, their production favors recycling. So, in a way, the Voltaic Systems Solar Backpack Charger for Laptops is an eco-friendly backpack.
One thing you may not like about this product is the weight. Each backpack weighs around 5.1 pounds – no other product in this review weighs as much as this. Also, this solar backpack does not come with a removable solar panel. So, you may not be able to replace the solar panel if it goes bad.
The Voltaic Solar Backpack Charger for Laptops comes with only one USB port. This is not necessarily a downside. But it is a limitation.
- With this product, you get the highest power output of any solar backpacks in this review.
- A bag size of 25 L is pretty decent when you consider all its features.
- Unlike other products in the review, it comes with a battery pack. You get a 1900-mAh battery, which can charge your laptop too.
- Made from recycled PET bottles, this product offers significant resistance to water and tear.
- Since each backpack is crafted from recycled PET, the production is eco-friendly.
- It uses a non-detachable solar panel.
- Compared to the other backpacks, it is pretty heavy.
ECEEN External Frame Hiking Backpack
About the Product
The ECEEN External Frame Hiking Backpack offers the largest bag size of any product on our best solar backpacks list. Then again, it provides one of the highest wattages. It is pretty lightweight and is durable.
The ECEEN External Frame Hiking provides a storage space of up to 68 L. No other product on the list matches this bag size. In fact, the product with the closest bag size to this, the ECEEN Solar Backpack 7 Watt Solar Panel, only offers 42 L.
With a bag size of up to 68 L, you can pack enough for a 2- to 3-day trip. Then if you are bothered about the size, you can adjust it with the various straps provided. Beyond adjusting the size of the bag, the straps (especially the shoulder straps and chest straps) help improve the grip and stability of the backpack on your body while you are on the move.
Interestingly, even with its large size, the ECEEN External Frame Hiking is pretty light. It weighs only around 1.8 lbs. – way less than what the Voltaic Solar Backpack Weighs.
Besides having a large space, the ECEEN External Frame Hiking comes with multiple compartments. For one, you get two side pockets, which can hold items like a water bottle and an umbrella.
The solar panels strapped to the ECEEN External Frame Hiking produces a total power output of 20 watts. Only the Voltaic System Solar Backpack offers higher wattage. With the power output of the ECEEN External Frame Hiking Backpack, you can charge your smartphones, tablets, power banks, and various other 5-volt devices.
Apart from the high wattage, the solar panels on the ECEEN External Frame Hiking are pretty efficient. They have a rated efficiency of up to 24% – higher than average monocrystalline solar panels.
Unlike the Voltaic Solar Backpack, the ECEEN External Frame Hiking comes with more than one USB port. So, when on the go, you can charge up to two devices at the same time.
Then again, the ECEEN External Frame Hiking uses removable solar panels. But those of the Voltaic Solar Backpack is non-detachable.
You may not like the fact that this product does not come with a power bank because it will not charge your devices when the sun is not out. But then, you can buy one for yourself separately.
- No of the other solar backpacks can take as many items as this product.
- Solar panel wattage is only bettered by that of the Voltaic Systems Solar Backpack.
- It uses a detachable solar panel. So, getting a replacement panel will not be complicated.
- One of the lightest bags on the list.
- Offers two USB ports – one more than that of the Voltaic Backpack. So, you can charge two devices on the go.
- You do not get a power bank with this product.
ECEEN Solar Powered Backpack with High-Efficiency Solar Panel (Anti-Theft)
About the Product
The ECEEN Solar Powered Backpack with High-Efficiency Solar Panel features as one of our best solar backpacks because of its high power output and unique anti-theft design. But beyond those features, the ECEEN Solar Powered Backpack with a High-Efficiency Solar Panel is pretty light, and it offers a decent size.
The zipper of the main compartment of the ECEEN Solar Powered Backpack with a High-Efficiency Solar Panel stays concealed while you carry it on your back. So, no one can open the main compartment without your knowledge until you get it off your back. This design makes the ECEEN Solar Powered Backpack with a High-Efficiency Solar Panel anti-theft.
This product is the only anti-theft backpack in this review. So, if you are out for an anti-theft solar backpack, you should really consider it.
The solar panels attached to the ECEEN Solar Powered Backpack with High-Efficiency Solar Panel offer a maximum power output of 10 watts. Only the Voltaic Backpack and the ECEEN External Frame Hiking Backpack offer high outputs.
While its charging rate will not be as fast as those of the Voltaic Backpack and the ECEEN External Frame Hiking Backpack, the ECEEN Backpack with High-Efficiency Solar Panel still packs a punch. You should be able to fully charge your phone and smartwatch within 1.5-3 hours. Then you can fully charge your smartphone and tablet within 4 to 8 hours.
The ECEEN Backpack with a High-Efficiency Solar Panel offers a space measuring around 26L. While this size is slightly larger than what the Voltaic Backpack offers, it is way lower than the ECEEN External Frame Hiking Backpack space. Still, it is pretty okay.
Weighing just 1.65 pounds, the ECEEN Backpack with a High-Efficiency Solar Panel is the second lightest bag we reviewed. The only other product that is lighter than it is the ECEEN Solar Backpack Foldable Hiking Daypack With 5V Power Supply.
The ECEEN Backpack with a High-Efficiency Solar Panel does not come with a removable solar panel. So, getting a replacement panel might not be so easy. It features just one 5v USB port, which means you can only charge one device at any point in time.
You do not get a power bank with the ECEEN Backpack with a High-Efficiency Solar Panel. So, when the sun is not out or cloudy, you cannot charge your devices.
- Wattage is pretty high – only the Voltaic Backpack and the ECEEN External Frame Hiking offer more.
- The bag size is decent.
- Weighing 1.65 pounds, this bag will not feel like an extra load on your back.
- Crafted to reduce theft chances, you can feel more confident while walking around with this bag strapped to your back.
- It does not come with a power bank.
- It could be better with more USB ports.
ECEEN Solar Backpack 7 Watt Solar Panel
About the Product
The ECEEN Solar Backpack 7 Watt Solar Panel offers one of the largest bag sizes amongst our best solar backpacks. But beyond that, the power output of its solar panels is pretty remarkable.
With this backpack, you get 42L of space. Only the ECEEN External Frame Hiking and the XTPower Hiking have more space. Besides taking this bag hiking, you may also take it with you when biking, hunting, or running.
The ECEEN Solar Backpack 7 Watt Solar Panel also comes with a 2L water bladder, which comes with its own compartment. With this bladder, you may not have to take a water bottle along to stay hydrated on your trips. Even better is that the water bladder comes with a tube that you can drink from without getting the bag off your back.
As the name says, the solar panels of the ECEEN Solar Backpack 7W Solar Panel provide up to 7 watts of power. This is not as high as what you will get with the Voltaic Backpack, the ECEEN External Frame Hiking Backpack, and the ECEEN Backpack with High-Efficiency Solar Panel. Still, it gets the job done, albeit not as fast as the said products.
You may want to opt for one of the 3 products with higher wattage if you live in an area with shorter durations of direct sunlight.
Beyond producing 7w solar power, the ECEEN Solar Backpack 7 Watt Solar Panel is pretty efficient. The monocrystalline cells have an efficiency of up to 22%. And this is pretty high – at least higher than the typical average for such type of solar cells.
On durability, the ECEEN Solar Backpack 7 W Solar Panel is made with nylon & polyester fabric. While the nylon part offers tear resistance because of its stretchiness, the polyester part provides some water resistance.
Besides the nylon & polyester fabric, the ECEEN Solar Backpack 7W Solar Panel is covered with polyester lining to enhance the water resistance further. Of course, this does not mean you should let the bag get soaked in the rain. But you can rest assured minimal rain drizzle will not get past the lining.
The solar panels attached to the ECEEN 7W Solar are detachable. So, getting a replacement should be easy. You only get one 5v USB port, unlike the ECEEN External Frame Hiking Backpack.
Weighing 3.31 pounds, the ECEEN 7W Solar is one of the heaviest backpacks on our list. Only the Voltaic Backpack is heavier. So, you may look away if you want something lighter.
Like every other product we reviewed, the ECEEN 7W comes with no power bank. So, you cannot store solar power for use when the sun is not out.
- Substantial power output – only bettered by the Voltaic Backpack, the ECEEN External Frame Hiking, and the ECEEN Anti-Theft Bag.
- Large bag size – only the ECEEN External Frame Hiking and the XTPower Hiking offer larger sizes.
- It is pretty tear-resistant and waterproof.
- You can detach the solar panel if you want.
- No power bank is included with this product. So, in the absence of solar power, you cannot use it.
- It is relatively heavy.
HAWEEL External Frame Backpack
About the Product
The HAWEEL External Frame Backpack features next in our review of solar-powered backpacks. This product offers decent power output, is a large bag size, and is lightweight.
If you get the HAWEEL External Frame, you can expect up to 7 watts of solar power from the solar panels. This is about the same as what the ECEEN 7W Solar offers. However, it falls short of the ECEEN Anti-Theft, the Voltaic Backpack, and the ECEEN External Frame Hiking offer.
Still, it offers enough power to charge a single device within a reasonable timeframe. Plus, since the solar cells have a transfer efficiency of up to 22%, they should work pretty well with enough direct sunlight.
The HAWEEL External Frame offers 30L of space alongside multiple compartments – more space than the Voltaic Backpack. But less space than what the ECEEN 7W Solar and the ECEEN External Frame Hiking offer.
Still, the multiple pockets and compartments offer enough overall space for your mobile devices, laptops, camera, shoes, clothes, radio, and much more. Then again, instead of charging your radio with the solar panel, you may just get a solar radio instead. This will free up space for other devices.
The HAWEEL External Frame bag weighs just about 1.8 pounds – one of the lightest products reviewed. Only the ECEEN Anti-Theft and the ECEEN Foldable weigh less.
One feature you may like about the HAWEEL External Frame is the stability that comes with wearing it. The shoulder straps alongside the padded back area ensure you feel easy while you carry the backpack.
On durability, the HAWEEL External Frame Backpack is made with high-density PVC fabric. So, it offers a good degree of water resistance and tears resistance. And overall, it should do just fine in the conditions of the outdoors.
The HAWEEL External Frame offers only one USB port. So, you can only power one device at a time. But on the upside, it also features a headphone port. So, you can power your device and listen to music at the same time.
Overall, you get a great deal with the HAWEEL External Frame. But, since the manufacturer does not include power banks with the backpacks, they are pretty much nonfunctional without solar energy.
- The power output of 7 watts – not as much as that of the Voltaic Backpack, but still enough to do the job.
- You can remove the solar panel whenever you want.
- The bag offers multiple pockets and compartments and an overall space of 30L. Only the ECEEN External Frame Hiking and the ECEEN 7W Solar provide more overall space.
- While it comes with just one USB port, it features a headphone port.
- The bag is pretty lightweight.
- It does not come with a battery bank, so it only functions when there is direct sunlight.
ECEEN Solar Backpack Foldable Hiking Daypack With 5V Power Supply
About the Product
The ECEEN Foldable offers one of the lowest prices, and it is the lightest of all the backpacks we reviewed. Apart from the great price, you get a great deal of space in the bag and decent power output.
The solar panels of the ECEEN Foldable offer a maximum power output of 6.5 watts. Only the XT Power Hiking has a wattage as low as this. Every other bag in this review, including the Voltaic Backpack, offers more power.
While the relatively low power rating of the ECEEN Foldable means that it may not charge your smartphone and devices very fast, it still works. But you may want to consider the Voltaic Backpack or the ECEEN External Frame Hiking if you stay in an area that does not get so much sunlight.
The overall space in the ECEEN Foldable is 30L – the same as the HAWEEL External Frame. Then you get multiple compartments, including a zipped pocket in front, two side compartments, and one zipped main compartment. However, you should know that ECEEN External Frame Hiking and the ECEEN 7W have large capacities.
Weighing just 1.19 pounds, the ECEEN Foldable is the lightest bag we reviewed. Beyond being lightweight, the ECEEN Foldable is made from nylon & polyester fabric – a water-resistant and tear-resistant combination of materials. Then the bottom of the bag is laced with a double-layer bottom piece. These features altogether contribute to the overall durability of the ECEEN Foldable.
For your comfort, the ECEEN Foldable comes with chest clips and shoulder straps. So, you can adjust the bag until you get the most soothing fit for you.
The ECEEN Foldable is perhaps the most portable bag we reviewed. You can detach the solar panels whenever you want, and you can fold the bag with ease.
When buying the ECEEN Foldable, you get 3 color options: grey, blue, and red. But it does not have a battery bank. So, it can only work when there is a source of solar energy.
- Uses removable solar panels. So, you can readily replace a faulty panel.
- It is very light and portable – the lightest of any of the backpacks we reviewed.
- The bag size of 30 L is pretty impressive, considering the weight. Only the ECEEEN External Frame Hiking, the XTPower Hiking, and the ECEEEN 7W have larger space.
- Decent water resistance, tear resistance, and overall durability.
- Multiple color options.
- Power output could be higher.
- No battery bank included.
XTPower Hiking Solar Backpack with Removable 7 Wall Solar Panel
About the Product
The XTPower Hiking offers decent power output. It is lightweight, efficient, flexible, and pretty durable.
With solar panels that produce up to 6.5 watts of power, the XTPower Hiking offers the joint-lowest wattage of any of the reviewed solar backpacks alongside the ECEEN Foldable. Then unlike the other solar power backpack, the XTPower Hiking offers a 6v USB port instead of a 5v port.
Of course, even with this low power output, the XTPower Hiking still does its job effectively when there is enough solar energy. Plus, the efficiency is pretty high; the monocrystalline cells offer a power transfer of up to 22% – above average. Nonetheless, you may want to consider other options if your region does not get sufficient sunlight.
The XTPower Hiking weighs only 1.8 pounds – one of the lightest solar backpacks in our review. Only the ECEEN Anti-Theft and the ECEEN Foldable weigh less. Beyond the lightness, you get 46L of bag space. Only the ECEEN External Frame Hiking has more space.
With the space in the XTPower Hiking, you can pack various devices and items simultaneously. Then you even get a laptop compartment that can hold laptops with sizes up to 17 inches.
The XTPower Hiking is padded in various spots for comfort. Then it features shoulder straps and a hip belt that improve comfort and help keep the bag stable while you move.
Made from Nylon, the XTPower Hiking offers some real resistance to rip and tears. But beyond that, the nylon fabric is decently water-resistant.
The XTPower Hiking comes with a removable solar panel. This makes for portability, and you can easily replace it when you have to.
Overall, the XTPower Hiking is a top product. But it would have been even better if it came with a battery bank.
- The bag size is one of the highest we reviewed – only the ECEEN External Frame Hiking trumps its size.
- You get to remove the PV panel readily.
- Not as heavy as the Voltaic Backpack or the ECEEN 7W.
- It does not come with a battery bank.
- The power output could be higher.
Buying Guide For The Best Solar Backpacks
Features To Consider Before Buying a Solar Backpack
Solar Panel Power Output (Wattage)
When buying a solar power backpack, your top priority should be to get a product that offers enough power output for your devices. Check for the wattage of the choices before you and prioritize those with higher wattages. The higher the wattage of the solar panels of the solar backpacks, the faster they can charge.
In many cases, the solar panels of solar backpacks have wattages ranging from 5 to 10 watts. Never go for any product with less than 5 watts of power; they will not do the job you want.
Battery/Power Bank Capacity
Since the sun will not always be out, some manufacturers include a battery bank in their products. So, the solar panel charges the battery bank, and when there is no sun, the battery bank will charge your device.
The battery banks come with different capacities, and the higher the capacity, the more charge it holds. Generally, prioritize getting a battery bank with a capacity of at least 10,000 mAh. Anything less will not make much difference. It might also be worth looking at backpacks with replaceable batteries for solar charging.
In case you do not find a product that comes with a power bank, you may just get one separately, or you could try other means of charging with a solar panel without the sun. One such means involves powering the panel with LED light. But while this alternative will work, it will never be as effective as the sun.
Removable Solar Panel
Some products are designed in such a way that you can remove the panel readily. Then others come with non-detachable panels.
The upside to getting a bag with a removable panel is that you can readily replace the panel if it ever goes bad. You can also adjust the panel for improved reception of solar rays, so it performs better.
Size of the Bag
This goes without saying, but the size of the bag you opt for defines how much you can carry with it. In some cases, the size of the bag is subjective. But generally, people opt for larger-sized bags since they can take more load at once. Then again, others want something portable – something small to carry around.
Besides the size, check the bags for their compartments. The more compartments in the bag, the easier it is to arrange your belongings in it.
The durability of the solar power bag you choose is not negotiable. You will be using the bag outdoors, where it will be exposed to the sun and many other conditions that may damage it. So, you must opt for a waterproof, tear-resistant, and durable product in the sun.
What Solar Backpack Size Do You Need?
The size of the solar backpack you need depends on the purpose you need it for. If you just need a bag for your normal day-to-day activities, one in the 12L to 25L size range will do. You can carry a laptop, your books/documents, your mobile devices, and a few other items with such backpacks.
Athletes and cyclists can make do with smaller backpacks. Something within 8 to 10 L would do fine for them.
If you need a bag for hiking, larger sizes like 30L to 100L are more appropriate. With such backpacks, you should carry various camping supplies, including clothes, mobile devices, flashlights, amongst others. If you are looking to get a solar backpack for your camping trip, you should consider getting a solar flashlight too. Getting one means you have one less device to charge with the bag and less competition for the 1-2 USB ports.
After thorough consideration, if you decide that the solar backpack will not suffice for your camping needs, you may opt for a solar panel for camping. With one, you should be able to charge multiple devices at the same time.
The feature that defines the primary function of a solar backpack is its wattage. Once you have selected products with the highest wattages, check the size of the bag. You should only get a product with enough space for all your belongings. Once that is settled, look out for the inclusion of a battery bank. The battery bank extends the functionality of your backpack beyond the periods the sun shines. Lastly, do not forget durability – your choice should stay strong and last many uses.
We are sorry that this post was not useful for you!
Let us improve this post!
Tell us how we can improve this post?