AUKEY 21W Solar Charger with SunPower Solar Panels, Stand, 2 USB Ports for Smartphones

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Product Specifications

SunPower Solar Panels with solar conversion efficiency of up to 23.5%
Dual USB ports - Up to 2A output each or total 4A max output under direct sunlight - Automatically detect & adapt to your USB powered devices to provide the fastest charging speed
Water & Weather Resistent - PET laminated solar panels with high-wear PVC fabric
Foldable design for easy transport - great for camping, hiking, picnics, and other outdoor activities
Package Contents: AUKEY 21W Solar Panel, User Manual, 24 Month Warranty Card

Product Description

Natural Energy Make full use of the clean and unlimited solar power around us. Simply unfold the AUKEY solar charging panel under the sun, connect your devices and watch the battery level start raising.

More Efficient From the moment it is placed under sunlight, the Sunpower solar panels convert more photons into energy than other similar products,which makes AUKEY 21W Solar Charger only need 3 panels while others may need 4 or 5 panels. Up to 23.5% of solar energy gets transfer into electric current to charge your devices.

Dual-USB Charging Charging two devices simultaneously with dual USB port,the AUKEY 21W Solar Charger has maximum current output of 2A per USB port or total of 4A. Your devices will be back to full battery in no time.

Stand Up There are two stands at the back of the charger to help the solar panel stays perpendicular to the sunlight, and hence increase charging efficiency.

Rugged Quality Although not to be used in raining days due to lack of sun, the solar charger is waterproof (not including the USB output ports) and rugged enough to withstand most weather and environment conditions in the wild. They can be easily fold up and carried to your next destination.

Get the AUKEY Edge -24 month warranty -100% customer satisfaction -Premium quality, cutting edge technology at affordable prices

Product Reviews

Works as expected

All USB solar chargers on the market output about 40% of the rated power of their solar panels. This isn’t a ripoff it’s just how they work.The panels output more than twice as much voltage as the 5V seen at the USB output. This “extra” voltage is necessary for several reasons. First, the panels produce different amounts of voltage in different amounts of light. The large margin of “extra” voltage allows the panels to still work in the winter when the sun is low in the sky or on partly cloudy days. Second, solar panels have a fairly high internal impedance. The “extra” voltage is necessary to deliver enough current to the voltage regulator in the USB port. Unfortunately, due to cost, size, and weight constraints, the circuit powering the USB ports just trims off the extra voltage instead of converting it to amps like a transformer in a switching power supply. Since Watts = Volts * Amps, trimming off more than half of the volts also trims off more than half of the watts as well.I’ve used Goal Zero and Anker solar panels extensively in harsh environments during multiple deployments to the Middle East and SW Asia so I’ve got some idea of what works and what doesn’t.I’ll begin with the common deficiency of all these panels including the new Aukey: lack of sufficient storage space for cables and a big USB power bank. The panels need sunlight but anything being charged needs shade to keep cool. This means longish cables so you’re not spending all your time chasing sunlight or shade as the sun moves. It would be so easy to make the pouch bigger and move it to the other side of the flap securing the panels in the folded position, but then the pocket would need its own flap and apparently two flaps worth of fabric and Velcro is just too much to justify cost wise for the manufacturers. Not withstanding the too small pocket, the Aukey solar charger does have several features that set it apart from the crowd. First, the panels are padded. This is important because any high spot under the fabric intensifies wear on the fabric covering it. The fabric over wires between panel sections and the USB port / voltage regulator junction box shows considerable wear and fraying on my older USB solar chargers. Second, the grommets are stainless steel as opposed to the other’s flimsy aluminum grommets. This has been a major failing of my Anker solar charger, less so for the goal zero because both the grommets and the panel are smaller on that one. Third, the Aukey has fold out legs to help angle the panel towards the sun. Unfortunately, they only have a single very steep built in setting. I’ve made three loops of 550 cord outter braid with double slip knots for friction that I put around both panel and leg to adjust the angle. They don’t block much light.Edit: This pairs well with the easyacc brand USB power banks. They have a feature many lack: they can charge something else while being charged themselves. The larger ones also have two inputs for faster charging. I managed to squeeze the 26,000 mAH battery into the pocket. It won’t stay closed but the flap it’s sewn onto still Velcros shut to the rest of the panel to hold it in. I bundle up my cords and clip them to the panel using the included carabiners. I use cheap USB LED lightbulbs with a power bank for all my camp lighting needsREAD MORE

Glad i bought this!!

Great panel. Charges from inside windows. Glad it came with eyelets and hardware to attach anywhere. Tested the output immediately and functions as advertised. Truly a great panel and a great price point. Yes the charge pocket is small and should be facing the opposite way but I think it’s intended to store cables not a device you would be charging. You wouldn’t want your device hanging out inside a hot pocket all day anyway. Get a long cable and store your battery or device in the shade while this charger restores your battery life with green energy.

The velcro-closure pouch is too small for my Nexus 6P smart device. I can’t imagine using both the 2A …

It does the job, and does indeed output 2A in direct sunlight, less in cloudy or indirect sunlight.My only real complaint’s are with the built in stand and the phone holder pouch.The stand holds the panel at too far of an angle to work effectively.The velcro-closure pouch is too small for my Nexus 6P smart device.I can’t imagine using both the 2A output ports on the panel to recharge two things in the pouch “It can’t be done.”

Works great for keeping phones

Works great for keeping phones, battery packs, and my many 18650 batteries charged for flashlights and fans. I have used this on a couple camping trips so far and very happy with the results.

Five Stars

Nice quality solar charger at a reasonable price.

Puts out the power. Appears to be quite weather proof.

This thing does a great job of pumping out the power to electronics. I tested in my window sill and it put out a steady 1.4A to my cell phone, and was not even entirely in direct sunlight. This will be part of my adventure bike touring setup. Works great in tandem with Solar Charger, Solar Battery Charger, Solar Power Bank ToullGo® 10000mAh Portable Dual USB Output Waterproof Shock-Resistant Solar Powered Phone Charger for iPhone/iPod/iPad/Samsung/ HTC (Orange) to store power for use once the sun goes down.

Excellent product. Works as advertised. Far lighter than carrying extra batteries.

Excellent product. Works as advertised. Far lighter than carrying extra batteries.To properly judge this solar panels’ ability to charge your device, you need to understand a few things. Just one test is not enough. You need to repeatedly compare Aukey’s ability to charge your device with your device’s USB charger (the one that plugs into your household power). The batteries must be at the same discharge levels. A 100% empty battery starts charging very slowly. As charging continues, the batteries charging rate increases (accelerates). Each device has hardware that controls charging rates – you cannot compare the rate at which device X charges on this panel with the rate at which device Y charges using household powered USB charger, even if both devices have identical batteries. The environments must match – the same temperature (and to a lesser extent, the same humidity). Because household power is a constant, and a solar panel’s power is not, you must ensure the panel’s charging ability is tested under full sun. To keep it fair, all three panels (for the one I purchased) must be at right angles to the sun. You also must know your devices battery capacity. My iPhone 6s Plus has a 2915 mAh battery. The newer iPads have a 11,666 mAh battery. You need to measure and compare the amps your device is allowing, when the battery is at various stages of discharge. To measure USB amps, consider http://www.amazon.com/DROK-Multimeter-Voltmeter-Capacitance-Charging/dp/B00J3JSEG6/ref=pd_sim_86_4?ie=UTF8&dpID=41vTgPN2ToL&dpSrc=sims&preST=_AC_UL160_SR160%2C160_&refRID=197B5AZ7AB89RS4NT312. But remember, your device should limit the charge (the amps), depending upon discharge level of your device’s battery.For example, you will be disappointed if you fully discharge you iPad and you use the Aukey Solar panel in full sun for an hour, only to discover your iPad’s battery allowed no more than a 10% charge. The same slow charging should happen when your fully discharged iPad is using a USB charger (under the same temperature conditions). That said, I also have battery packs that will stay near my car (charged by this panel, when possible), unless the weather report says it will be cloudy while I am hiking.Further geeky reading: “USB battery charging: it’s harder than it looks” ([…])READ MORE

Awesome charger. Not nearly as fast as a wall …

Awesome charger. Not nearly as fast as a wall charger but when power isn’t available this is hard to beat.

Works

Works well in direct sunlight.

Excellent Solar Charger.

This is a reliable product. A very good idea to get this solar charger.

Saved our butt on the boat when cell battery went dead

Very imp to have

That thing is tough! It has been out in …

That thing is tough! It has been out in the sun for the last year, the black voer is bleached but the cells are still up and running! Great

Five Stars

Awesome Product

Awesome buy

Compact and clean. Lay it or hang it. Great product. Requires your to buy a chargeable battery which is a good feature so you have the option to buy the battery pack size/ amp…