Charging efficiency and dependability are just two important metrics we've focused on when crafting our metrics. As we began testing our new fleet, the BigBlue 28 stood out as a contender for our Editors' Choice Award. This 28 watt model excelled in charging efficiency and dependability; complete with an auto-restart function and integrated ammeter, these features allow the panel to continue to deliver a charge in less than ideal conditions. After testing, we compared the BigBlue to the others in our fleet and were surprised to see that it's also one of the more affordable options of its size. Simply put, we love this panel for its effective charging, durable and straightforward design, and the fact that it is reliable even when the sun is not!
BigBlue 28W Review
Cons: Bulky, heaviest weight
Compare to Similar Products
|Price||$59.99 at Amazon||$39.99 at Amazon||$35 List||$39.99 at Amazon||$114.99 at Amazon|
|Pros||Inexpensive, efficient, user-friendly, excels in partly cloudy conditions||Inexpensive, lightweight, portable, charges quickly||Relatively lightweight for panel type, inexpensive, charges devices efficiently||Large storage pocket, comes in multiple colors, durable||Powerful, works well in partial sun, cheaper than other laptop compatible options|
|Cons||Bulky, heaviest weight||Low output power, cannot charge multiple devices at once||Ineffective if relying only on solar for power, less durable than other battery packs||Heavy, bulky||Bulky, heavy, hard to set up, complicated adapters for laptop charge|
|Bottom Line||We were impressed by its ability to charge our gadgets quickly and reliably; its reasonable price is the cherry on top.||This panel impressed us with its fast charging speeds and its lightweight, portable design.||An efficient, compact battery pack with a 2W solar charger on it; a top performer.||Well designed, comes in multiple colors, and is durable - but also bulky.||The X-Dragon 40W is the largest panel we tested and works relatively well for charging a laptop, though it is cumbersome and heavy.|
|Rating Categories||BigBlue 28W||ECEEN 13W||Renogy 15,000mAh||PowerGreen 21W||X-Dragon 40W|
|Charging Speed (30%)|
|Charge Interruption Recovery (20%)|
|Multiple Device Charging Speed (20%)|
|Weight & Portability (20%)|
|Specs||BigBlue 28W||ECEEN 13W||Renogy 15,000mAh||PowerGreen 21W||X-Dragon 40W|
|Panel Size (watts)||28W||13W||2W||21W||40W|
|Weight (measured)||23.5 oz||12 oz||9.5 oz||20.3 oz||37 oz|
|# of USB outlets||2||2||2||2||1|
|Max USB Output Current (amps per port)||2 amp||2 amp||2 amps||2 amp||2.8 amps|
|Size folded||11.1" x 6.3" x 1.3"||11.4" x 6.1" x 0.6"||6.3" x 3.1" x 0.7"||11.4" x 6.8" x 1.3"||10.43" x 6.3" x 2.76"|
|Panel Type||PET Polymer||Mono-crystalline||Mono-crystalline||Mono-crystalline||PET-Polymer|
|Size opened||33.1" x 11.1" x 0.2"||11.4" x 14.3 x .15"||6.3" x 3.1" 0.7"||27.6" x 11.4" x 0.2"||35.2" x 18.1" x 0.04"|
|Battery input (Volts / Amps)||n/a||n/a||5V 2A||n/a||n/a|
|Charge capacity (mAh)||n/a||n/a||15,000mAh||n/a||n/a|
|Direct USB Plug?||Yes||Yes||Yes||Yes||Yes|
|Warranty||2 years||30 day return||1 year||1 year||2 year|
Our Analysis and Test Results
We were impressed by this panel, which came from a relatively unknown company. BigBlue has created an inexpensive, highly efficient panel that charged our electronic devices with ease. Though it is a bit large and bulky, the extra size didn't matter because we knew this panel would get the job done.
For car camping or a backcountry basecamp where weight is not a huge concern, the 28W from BigBlue is a great choice. The positive features of this panel outweigh the negatives, as this panel will charge your devices quickly and effectively. It comes with a nifty auto-restart feature that comes in handy when the sun is intermittent, which occurred more often than we liked.
During testing, we had multiple devices that required a charge; this panel acted as a basecamp charging station for our satellite phone, external battery, and two phones, keeping them charged for two weeks. The updated version of this panel even has a USB-C port, which was extremely useful in charging our laptop and Pixel 3 straight off the panel.
It performed consistently well in a range of conditions. Even if you are not a gadget-obsessed adventurer, this panel is an excellent option if you want a quick charge for a single device (and again, it's hard to beat the price).
Charge Interruption Recovery
One of the coolest features that our Editors' Choice has is the ability to recover from an interruption. Whether you are charging on a partly cloudy day, or the sun angle changes to cast a shadow over the panel while you are charging, the BigBlue has an auto-restart function that makes reconnecting to your device a smooth affair. Though the charge was slow with interruptions, this panel has less of a chance of not charging your device at all (after an interruption). Other large-capacity panels, like the X-Dragon 20 have better success recovering from an interruption than smaller panels like the Goal Zero Nomad 7.
As this is one of the larger capacity panels we tested, it comes as no surprise that the BigBlue 28W received some of our highest scores in charging speed. Our new test batteries are 20,000mAh batteries, meaning they have a much larger capacity than the batteries used in our previous tests; this also means that it took these new panels longer overall to charge these batteries. That aside, the BigBlue was one of the fastest-charging panels in our update. In 30 minutes, the panel charged our 20,000mAh test battery 4%. This panel is outstanding when it comes to speed and efficiency, and this played a significant part in it taking home the Editors' Choice Award.
Multiple Device Charging Speed
Though the BigBlue panel comes with two USB ports, we recommend only charging one device at a time, which will help achieve maximum efficiency. This multi-device function seems to be more of a marketing scheme than an effective way to charge electronics. That said, the BigBlue is the best-suited panel for this job because of its large capacity.
The BigBlue received high scores in our durability metric and is comparable to our other award-winning panels from previous test cycles. We had no issues with this panel performing in semi-wet conditions, and there were no signs of wear after a few months of use. Because it has a few more features than other panels (the ammeter and the auto-restart function), the BigBlue has a higher risk of breaking down in some fashion, though we had nothing but success when using this panel. The canvas material that covers the outside is durable and resistant to abrasions and wear, and the PET Polymer panels showed little sign of wear, even after months of exposure to the sun.
Weight & Portability
Efficiency and ease of use are a trade-off for portability and weight. The larger the panel, the faster it will charge your devices, and the more difficult it might be to fit into your backpack; the BigBlue is no exception. As our largest-capacity panel in this review, it should be no surprise that this product is also one of the bulkier options out there. If you're after a larger, heavier panel, it makes sense to go with the BigBlue since it will deliver the most charge to your devices in the least amount of time (and comes at an affordable price).
The other incredible aspect of this panel is the cost. The BigBlue is one of the least-expensive panels of its size in this review. It delivers almost 30W of power and comes at an excellent price. Many panels we've reviewed are more expensive but also have a lower capacity; you do the math! This panel was one of our favorites because it is humbly charged our gadgets quickly, with no extra frills or features. The simplicity of the panel makes it less expensive to produce, and in turn, keeps its price tag relatively low.
We love the BigBlue. It provides a consistent charge to our electronics in numerous situations, no matter if it's a partly cloudy day or there's a tree branch interrupting the continuous delivery of sunlight. Time and time again, it kept chugging along, charging our devices effectively. Though the panel has three USB ports, it performed at its best when a single port was in use. We decided to go all in and give this panel our Editors' Choice award, simply because it is the most efficient and fastest-charging panel in our fleet. Its incredible qualities trump weight and portability, as it is one of the larger panels we reviewed, and the price is just right.
— Jane Jackson