BigBlue 30W Fast Charging Solar Charger with USB-A, USB-C and DC Outputs

I've tested it several times and it works. Yesterday I hooked it up to a 50,000 mah power bank in the middle of the day. I just laid it flat on an outdoor table. I didn't tilt it to maximize its performance. The power bank started with a reading of 75% and climbed to 85% in one hour. I plugged all this information into Google AI and it says that the solar panel was producing between 18.5 and 21.5 watts. Considering that I didn’t angle it to optimize the power, I think that is really good. There is one little problem. The solar panel doesn't produce a high enough voltage to charge the power bank over 86%. I checked the reading on the power bank every hour for three more hours after the first hour with a reading of 85% and it never got over 86%. If I angled it perfectly it might have gone higher. I don't know. My experiment isn't super scientific, but it is still quite telling. I still give it 5 stars because 86% of that power bank is still 43,000 mah, minus some inherent power loss. That's enough to charge a couple phones and a few flashlights. That's enough for me. Hopefully it will be enough for you. Also, I have had the panel in the trunk of my car for over a year bouncing around and it still works. It easy to connect to and I think that it's worth the money.

This Solar Charger fully charged my mobile battery 20% in 2 hours of full Arizona Sun and it's also a foldable nice compact unit, my portable charger even fits in the pouch which is small enough for just a battery. The Material of the panel seems durable, the only thing I'll have to watch is the leather pieces that appear to be real leather, being in the sun all day it will dry out so leather oil would help its life.

Bought it for backpacking but doesn't pack or carry well. Compared to my older and smaller 14W Anker foldable panel, but did not notice any added benefits in charge capacity or speed.

I received my solar panel last night and i’m currently putting it to the test. @ exactly 9:49am, i hooked up my completely dead OnePlus 7 Pro (4,000mAh) (that i don’t use anymore) to the solar panel. As of 10:30am the phone battery is at 16% which btw is really, really good given the lack of direct sunlight due to the cloud covers skies. To give you a better idea of how cloudy it is, i can look directly(or indirectly?😅) at the sun without going blind; Well, kind of. Also, I think if i were to charge my iPhone, it would be at ~20% charge since it has a slightly smaller battery (~3687 mAh). I bought this solar panel for the purpose of using it at a camping festival i’m going to in 2 weeks. Needless to say, this will suffice! I’ll update this review as i test it over the next few weeks @ different times of day. Edit: Friday December 22, 2023 2311 I took this solar panel to Lost Lands (camping music festival) and it came in so clutch! I brought 3 power banks just in case (10k mah, 20k mah, and 30k mah), but with the solar panel, I only had to use the 10k mah powerbank. I would use the 10k mah throughout the day/night (7am-3am) and then I would set up my solar panel on my tent and hook the power bank up. That way, by the time the sun came up, it would be charging and be ready to be used by noon. The festival was from Tuesday-Sunday. The solar panel was charging very efficiently and very quickly (in my opinion). On nights when I didn’t set up my solar panel before going to sleep, I would wake up early in the morning to set my solar panel up and hook my powerbank to it, then I’d head down to the showers and by the time I got back it was fully charged. (Shower lines were long so I’d be gone for roughly 1hr-2hrs). Also, there would be times when it’d get a little cloudy but, the solar panel still charged pretty well. Though, not as fast. Overall, super useful solar panel. Totally worth it for the price.

A lot of people complain about the charge times or it not working. First it's a solar panel, it's not going to charge as fast as it would plugged into your car or wall. Second it works best when it is outside in direct sunlight, not behind glass, not in the shade, not in cloudy weather, IN DIRECT SUNLIGHT. It will charge if it's not in direct sunlight, but much slower. Also it's going to take longer to charge if you're using your phone while charging. The more you plug into it, the longer it will take to charge everything. It also doesn't help if you're using a 12ft long cable. So keep in mind when buying this, direct sunlight, turn off the device you're charging, charge 1 device at a time when possible, and use the shortest cable possible. It's very useful to have. Good for camping, hiking, hunting, survival, emergency preparedness, or just being environmentally conscious. If there's a reason why you can't charge your phone from an outlet, this is perfect. The size is about that of two tablets/iPads stacked on top of each other or a small laptop when folded up. And about 3 or 4 tablets/iPads side by side when opened up. It came with some carabiners so you can attach it to your backpack, tent, a chain link fence or just about anything that would help face it in direct sunlight. It also has a little indicator light where you plug your USB cable into that lets you know if you are getting power, the brighter the light, the more power you're getting. As long as you keep those few things in mind this solar panel is effective and super simple to use.

I purchased this BigBlue 28W solar panel for charging devices while camping. Unfortunately, I experienced disappointing performance, and I was able to reproduce the problem with two separate panels. I tested the panels outdoors in California in full direct sunlight, fully unfolded and aimed directly at the sun. I also tried different USB-C cables. I initially noticed the problem while charging my Anker 25,000mAh power bank. The panel would initially provide higher output, but as it sat in direct sunlight and heated up, the charging power dropped significantly. To verify what was happening, I used a Klein Tools ET920 USB digital meter. On the first BigBlue panel, I initially measured 5.02V at 1.36A, or about 6.8W. After the panel had been sitting in direct sunlight, output dropped to approximately 4.98V at 0.79A, or about 3.9W. I observed similar behavior with the second panel. I also experienced periods where the USB output appeared to shut off momentarily, causing the Klein meter to reset and restart. To make sure this wasn't an issue specific to my Anker power bank, I connected an iPad directly to the BigBlue with a different USB-C cable and experienced the same behavior. This was important because it showed that the low and declining output wasn't limited to one particular charging device. I understand that a solar panel won't normally produce its full rated wattage under real-world conditions and that solar-panel output can decrease as the cells get hotter. My concern is the amount of reduction I experienced. The panel needs strong direct sunlight to work, yet in my testing its usable USB output decreased substantially after sitting in that same sunlight. Since I was able to reproduce this behavior with two separate BigBlue panels and two different devices, I decided this panel wasn't reliable enough for my camping needs and returned it.

I bought this solar panel array in late 2024, and didn't end up using it until June 2026. I set it up outside our tent for about 10 hours in the middle of the day, on 3 consecutive days, with daytime temps around 85-90 F. I laid it against a tree facing the sun, and changed it to laying flat around midday, and it was able to charge an iPhone 16 from 20% to 100% in less than 2 hours (didn't catch exactly when it stopped charging). Also used it separately to charge a Streamlight MicroStream flashlight and a portable battery to power extra devices at night. I recommend folding the panel with the output hub (where stuff plugs into) behind the solar panels to keep it cool, and put your device in the shade of the panel. I will be buying another so I have one for hiking and one for my survivalist pack.

I used this BigBlue 28W solar charger primarily during extended outdoor and field situations where traditional charging options were limited, and in that role it genuinely helped me several times when I needed to keep my phone alive. In strong sunlight with all panels fully opened and positioned correctly, it was capable of slowly charging my phone throughout the day while I left the charger outside and kept the phone itself shaded from direct heat. In situations where you have no access to outlets or reliable power, that can honestly make a huge difference. However, buyers should set realistic expectations about charging performance. Based on my experience, this charger realistically handled one device at a time effectively. Even though there are multiple USB ports available, trying to charge more than one device at once noticeably reduced charging performance to the point where the second device often barely charged at all. Charging speed was also much slower than standard wall charging or portable battery packs, so this is definitely more of a “survival / field utility” product than a fast everyday charger. I would not recommend this as your primary charging method if you have access to normal electricity or portable battery banks. However, in situations where solar power is your only realistic option, it can still be genuinely useful for slowly maintaining or recovering phone battery life during the day. Overall, it is not powerful enough to fully replace traditional charging solutions, but as an emergency or field backup it still served an important purpose for me.

La uso (raramente, quando serve) per ricaricare la powerbank. Credo sia l'unica funzione sensata per questo taglio di potenza, e comunque lo fa benissimo. Sono solo 14 W ma che rendono davvero. Un ottimo inizio per pensare più in grande, ma occhio ai prezzi! Non è da prendere per pensare di risparmiare corrente, è soltanto un salvagente in caso di necessità o emergenza.

Werkt uitstekend. Op een wisselend bewolkte dag heb ik 0,3A tot vol in de zon ongeveer 2,7A met soms uitschieters van 3,0A in Nederland. Powerbank van 20.000mA ging van 67% naar 100% in 3 uur tijd vol in de zon (buiten temperatuur 26 graden Celsius).

Quality product. Easy to use. I get 2A current a sunny winter day in the middle of Sweden. Light cloudy and I am down to 1.5A. A medium cloudy day about 1A. That means that I should get 3A in the summer and promised 4A further south. Not bad. Everyone should have one of these at home. Highly recommended.

Good charger however very slow. Good for backup.

Compré este cargador solar para situaciones de emergencia en las que no dispongamos de suministro eléctrico, decir que la sensaciones son buenas, ya que los materiales se ven duraderos, aunque en algún comentario y es cierto matizan que la unión entre los paneles solares tendrás que cuidarla, ya que quizá es la zona más frágil a la hora de manipularlo o colgarlo, dicho esto me imagino que en condiciones de uso normal y cuidadoso debería durar bastante. Por otra parte, y como comentan también en otros comentarios, la potencia real no son 28 W sino 20 a la hora de cargar, pero este tipo de dato es igual en todos los paneles solares nunca vas a tener la potencia que publicitan en la mayoría de los casos. Independientemente de este pequeño dato respecto a la potencia la carga, es muy buena cuando sitúas el panel solar correctamente en el ángulo adecuado, ya que eso marca una diferencia muy grande en cuanto a la potencia de carga, en mi caso yo lo compré con el amperímetro para poder visualizar la potencia de carga, según lo colocara, lo cual me parece muy útil. Para los que no lo sepan la carga a través de un cristal o en el interior de una casa, reduce considerablemente la potencia de carga de cualquier panel solar, por lo que no será igual que si lo cargas en exteriores, evidentemente si tienes una terraza un jardín, no te supondrá ningún problema y si no, simplemente tendrás que esperar más tiempo si lo cargas en el interior de tu domicilio o a través de un cristal, evidentemente te sacará de un apuro igualmente ya que puedes cargar directamente el móvil a través de dos conectores en tiempo real que es la función de este cargador solar. No te recomiendo meter los dispositivos que cargues en el interior del bolsillo, ya que se pueden llegar a calentar mucho dado el color del cargador solar y que estaría directamente expuesto al sol, por lo que te recomiendo que una vez conectes el cable de carga, el dispositivo intentes dejarlo a la sombra o en una zona donde se recaliente lo menos posible.