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The best portable solar battery charger
By Sarah Witman This post was done in partnership with Wirecutter. When readers choose to buy Wirecutter's independently chosen editorial picks, Wirecutter and Engadget may earn affiliate commission. Read the full guide to portable solar battery chargers. Unlike the finite energy stored in a battery pack, a USB solar charger offers a tiny power plant that can generate power for your phone and small electronics to keep them charged when the sun is out—you can even use one to recharge a power bank and save that energy for later. After spending more than 60 hours testing 12 models, we're confident that the BigBlue 28W USB Solar Charger is the best portable solar charger for people who need to charge their gadgets and stay connected in an emergency or when they're off the grid. The BigBlue 28W USB Solar Charger produces the most power of any portable solar charger we've tested, and it has unique features that make it more versatile and durable, including three output ports (versus two on most other chargers), a weatherproof port protector, and an expansive but lightweight array of panels to catch every last ray of sunlight. Although other models come close to matching it in terms of power, the BigBlue is also smaller and lighter than other options with similar output, so it can more easily fit into a camping backpack, hiking daypack, or emergency kit. If the BigBlue is unavailable, we also like the X-Dragon 20W SunPower Solar Charger. In testing, it was second only to our top pick in terms of how much power it produced throughout the day, and it even produced a little more when the sun was at its peak midday. While this model will charge up your devices just as fast as our top pick, the X-Dragon lacks the convenient extras—such as the additional charging port and the port protector—that make the BigBlue stand out.
ICYMI: Facebook VR selfies, laser-powered water and more
#fivemin-widget-blogsmith-image-35216{display:none;} .cke_show_borders #fivemin-widget-blogsmith-image-35216, #postcontentcontainer #fivemin-widget-blogsmith-image-35216{width:570px;display:block;} try{document.getElementById("fivemin-widget-blogsmith-image-35216").style.display="none";}catch(e){}Today on In Case You Missed It: Facebook is adding VR to the social network and one of the new tricks will let users take a selfie of their avatar selves inside of different tourist spots. Japanese researchers discovered that a water droplet coating allowed water to be controlled by a laser, capable of pulling 150 times its mass when harnessed like a mini oxen. Finally, a backpack on Kickstarter would charge your devices on the move and roughly nine other things. Guinness World Record fans will want to see this crazy long K'NEX contraption. As always, please share any great tech or science videos you find by using the #ICYMI hashtag on Twitter for @mskerryd.
Goal Zero brings the Yeti 150 solar generator back from the wilderness
It's not the first gadget to be named after the abominable snowman, but at least this one might save your neck in a tight spot. Goal Zero's Yeti 150 solar charger is designed for use in the great outdoors, packing a 15W photovoltaic panel hooked up to a 150 watt hour battery. It'll be available to buy this Spring, just in time for camping season, and will cost you a not-too-abominable $400. Follow all the latest CES 2013 news at our event hub.
Goal Zero's Solar Chargers light up the Outdoor Retailer show
The Outdoor Retailer show wrapped up on Sunday in Salt Lake City, Utah, and there were a surprising number of accessories and apps introduced at the annual trade show of interest to TUAW readers. Goal Zero, a company that specializes in portable solar chargers, introduced two new solar recharging kits that are designed to keep your Apple and other devices going when there's no power outlet nearby. The Sherpa 50 (at top) packs enough power to keep your iPad going for up to 15 hours, and can be charged by the sun in 5 to 10 hours with the Nomad 13 solar panel. The Sherpa 50 can also add up to 3 hours of life to your laptop. A much more portable solution to keep your iPhone or iPod touch powered up to 8 hours longer is the Switch 8 (below). Slightly smaller than a roll of quarters and weighing just 4 ounces, the Switch 8 can be fully charged up by the sun in 6 to 12 hours by the Nomad 3.5 solar panel. Pricing for the Goal Zero kits (including the solar chargers and accompanying solar panels) is US$399.99 for the Sherpa 50 and $199.99 for the Switch 8. The kits should prove to be a valuable tool for outdoors enthusiasts and emergency preparation. #next_pages_container { width: 5px; hight: 5px; position: absolute; top: -100px; left: -100px; z-index: 2147483647 !important; }
Insert Coin: Ray solar charger adheres to your window, basks in the sunlight
In Insert Coin, we look at an exciting new tech project that requires funding before it can hit production. If you'd like to pitch a project, please send us a tip with "Insert Coin" as the subject line. The most frustrating products are the ones that have such simple ideas, you're upset that it hasn't been done before -- or that you weren't the one that came up with it. No idea is so simple as the brilliant Ray solar charger. A mobile phone juicer that comes with a kickstand and built-in suction cup so that it's nearly always pointed right at the sun. If you think that sounds like simple madness or genius, click past the break to find out why it could be worth your investment.
Ford teams with SunPower, offers EV owners $10,000 solar charging system
We might not know how much Ford's expecting for the Focus Electric, but it's already put a hefty $10,000 price tag on one of its accessories. The company announced today that it has teamed with SunPower to offer purchasers of the upcoming Focus Electric and C-MAX Energi a 2.5-kilowatt rooftop solar system. That setup will apparently provide "enough renewable energy production to offset the energy used for charging" cars that log 1,000 miles per month (about 30 miles per day) or less. If $10,000 is just a little too rich for your blood, there's always Best Buy's $1,500 budget-friendly charging station. Full PR after the break.
Voltaic Spark Tablet Case powers your pad with the Sun's rays
Voltaic makes tons of solar-charging gear, from laptop bags to backpacks, but what are those living in a post-PC world to do? Well, the company just unveiled its Spark Tablet Case -- a thin, padded tote designed for your iPad or other slate that can generate 8-watts of power in sunlight. In addition to directly charging your iPad in about 10 hours, it can also bank the Sun's rays in a universal battery pack, for use when those fluffy things in the sky don't cooperate with your outdoor computing schedule. Optionally, the included V39 USB Battery can be charged (as you may have guessed) via USB, for extra insurance. The Spark is available now for $299 and extra battery packs can be had for $99. Check out the gallery below and the PR after the break. %Gallery-127020%
Strawberry Tree brings free, solar-powered charging to Belgrade's BlackBerrys, more (video)
Dead battery in Belgrade? Head to the city's Obrenovac district, where a group of students has developed the world's first public charging station powered entirely by solar energy. Known as the Strawberry Tree, the structure's 16 ports support a variety of handhelds, allowing pedestrians to juice up their cell phones in just ten to 15 minutes, at no charge. Its built-in batteries can also store up to a month's worth of back-up energy, enabling the station to hum along at night, or even during Serbia's less sunny seasons. In the first 40 days following its November launch, the Strawberry Tree logged some 10,000 charging sessions -- or about ten charges per hour. Creator Miloš Milisavljevic was just 17 years old when he came up with the idea, and now, at the ripe old age of 22, is looking to plant new stations across other Serbian cities, through his Strawberry Energy NGO. He says these installations won't generate much revenue from consumers, but that's not really the idea: "Energy from the sun is free, and it would be unethical to charge people to use the Strawberry Tree...We are trying to inspire young people to think about the source of the energy they use, and behave and act responsibly." You can check out the Strawberry Tree in the video below, or find out more about Milisavljevic's ideal-driven endeavors in the full PR.
Samsung Replenish review
There's something about a green phone that really tugs at the heartstrings, but over the years Sprint has been determined to yank as hard on those cords as possible. Recyclable handsets like the Samsung Restore, Samsung Reclaim, and LG Remarq took store shelves by storm, and the latest environmentally-friendly kid on the block is here to encourage reducing, reusing, and renewing -- your contract, that is. The Samsung Replenish puts its own twist on the eco-phone trend by adding in Android. This is by no means the first time such a smartphone has come to market, but it's the first one to knock on Sprint's door. So, how did the Replenish do for making a genuine first impression? Head south after the break to find out.
UM students make cheap and portable solar charger / light source for developing nations
Solar power is the most egalitarian of all energy sources, yet residents in many parts of the world still lack access to electricity. Three University of Michigan engineering students have created an affordable solution to this problem -- to the delight of camping geeks everywhere -- with the Emerald, a portable solar panel that does double duty as both a cellphone charger and personal light source. We've seen the personal solar panel idea before, but the price of entry made it an untenable solution for developing nations. Solar-powered light bulbs have been around for a while too, but the Emerald's light lasts for eight hours on a charge (as opposed to the bulbs' two to six hours), and it's able to fully charge a phone in the same time it takes an outlet to do the job. They aim to sell the device for the low, low, price of under twenty bucks for customers in the developing world, which is 90 percent cheaper than other solutions and 100 percent more awesome.
Eton Raptor emergency radio trades the crank for solar power, rakish good looks
If "danger" is your middle name and yet "caution" a favorite word, you've probably already got an ugly old emergency radio buried somewhere in your car. Today, Eton's unveiling a model that you might actually feel comfortable using in public without disaster having to strike first. The solar-powered Eton Raptor boasts a slender, 11-ounce carabiner-like design that seems positively packed with tools, including the typical (AM / FM / WB radio, compass, LED flashlight), the adventurous (altimeter, barometer) and the plain ol' useful (audio line-in, bottle opener). It's also got a USB port for charging gadgets from the internal 1800mAh battery and takes splash-proof cues from the Eton Soulra. No word on price, but we know a few road warriors who might be interested when it hits shelves in the first quarter of next year. PR after the break, images immediately below. %Gallery-111814%
Toshiba's Charge Grid puts your solar panels to work, smartly charges your EV
Got a bunch of photovoltaic cells and a vehicle that requires electricity? Toshiba's thought up a process dubbed "Charge Grid" by which you can juice the latter efficiently. When the sun's out and the electrons are flowing, it doesn't pay to put them into the grid, so this system stores them in a rechargeable battery ready to rapidly charge your EV. For nighttime when the electricity rates are low, a bidirectional inverter lets you hop right back on the neighborhood grid, so your solar cells are put to good use and your car is always well fed. The company tells Tech-On commercialization of the system is still a few years away, so you've plenty of time to raze that roof antenna in favor of some photosynthesized electricity.
Sony patent application points to dual-screen, dual-use tablet
We never put too much faith in patent applications leading to actual products, but we can't help but get a little bit excited about the possibilities presented by a recent Sony application for a dual-screen tablet. Described specifically as an "electronic book with enhanced features," the device would sport two screens that could take on a different functionality depending on how the device is oriented -- functioning as an e-reader when in portrait mode, and displaying a keyboard on the lower screen when placed on a table, for instance. Now, this obviously has a few similarities to the Courier, and even more to Microsoft's earlier Codex project (with its "Battleship posture"), but Sony does seem to have put a slightly unique spin on things, and has even thrown in a few more ideas of its own -- even mentioning solar charging in its claims for the application.
Kiwi Choice launches U-Powered USB portable solar charger
Oh sure, we've seen quite a few solar chargers in our day, but rarely do we get the chance to actually use one for the weekend. A new outfit by the name of Kiwi Choice gave us such an opportunity recently, and today it's officially launching the U-Powered USB portable solar charger. Put simply, this here device folds out into a tri-pointed thingamajig with a trio of solar panels ready and willing to catch sunlight and store it within. The impatient among us can also juice it up via USB or AC adapter, with a full charge taking at least four hours. The device boasts a power capacity of 2,000mAh, and there's also a magnet for storing it underneath your vehicle's seat or dashboard. Oh, and there's even a LED flashlight on the front in case of emergency. The company ships the device with 11 different tips, one of which plays nice with Apple's dock connector. We tested it out on a few obvious candidates, and while it had no issue juicing up our iPhone 3G, the in-house iPad saw the dreaded "Not Charging" logo appear moments after it was connected. The bundle also includes an AC plug and an in-car cigarette adapter for times when the solar charger is pooped, but unfortunately, neither of those options would charge the iPad, either. We will say, however, that it managed to charge every other handheld we had just fine, and while the build quality wasn't exactly world class, it's suitable for tossing in the car and having around when energy is needed. It's available today for $49.99 if you're interested. %Gallery-93042%
Novothink rolls out Solar Surge iPhone / iPod touch charging case
It's not November '09 as originally promised, but Novothink has now announced that its Solar Surge charging cases for the iPhone and iPod touch are finally available. Those will run $79.95 for the iPhone 3G/3GS version and $69.95 for the iPod touch version (second gen only, it seems), which are each available only in black or white at the moment (additional colors are "coming soon), and should add between four and eight hours of talk time, or up to 20 hours of additional audio playback. That's, of course, when the charger is fully charged, but Novothink says you can still expect to get between 30 and 60 minutes of talk time after two hours of exposure to direct sunlight.
AmbienTec's SolarFold and SolarFan charge your gadgets, available without prescription (video)
You might expect a product from a company called AmbienTech to make you a bit drowsy, but we're thinking this pair of solar chargers are actually rather interesting. For one thing, they aren't just concepts: they're available for purchase right now -- or at least they are in Japan. They're called SolarFold and SolarFan, two designs that both deliver four panels of spherical-based solar cells, comprised of 1,900 globes each, making them slightly flexible and rather more durable than your average photovoltaic. They're reasonably efficient, too, delivering 2W over USB and, in 10 minutes, are able to charge an iPhone enough to make a 3 minute call. (We'll leave it as a reader exercise to figure out how many days would be required for a full charge.) Both models are available now for ¥22,050 (about $250), but only the fan comes with a cool little tripod, making the decision of which to buy a little easier.
Photovoltaic circuit makes solar-powered touchscreens possible, not yet plausible
What's cooler than the latest in technology? How about the latest in self-powering technology? University of Pennsylvania researchers have put together what seems like the world's first photovoltaic circuit, which is to say that the electronic parts of your devices will no longer have to just consume energy, they'll be able to harvest it directly from the sun. The most obvious application for this would be in smartphone touchscreens, which could recharge themselves while you sip your latte at the local sun-drenched coffee shop. Of course, such practical uses are still a fair distance away, as the team can generate only minuscule amounts of power at present, but the theory is in place and so is our attention. Don't let us down, Penn!
Scosche solBAT II collects solar power, distributes it to USB devices
Solar-charged batteries aren't exactly wow factors these days, unless they're dirt cheap like this Scosche solBAT II. With 1,500mAh of juice, this dongle can carry slightly more power than your average smartphone, and can also take any device with a USB cable. However, before you fork out $29.99 to Scosche, you should know that the solBAT takes between four to five days (!) to charge up fully under sunlight -- not ideal for most power-hungry smartphones nowadays. There's always the $93.23 Energizer SP2000 (2,000mAh) for your consideration -- it's bulkier, but with three solar panels it only needs six hours of solar-charge time. Guess we'll just take the faster one, thanks.
Power HotSpot for 12 volt 'noncritical' electronics and the survivalists who love them
Companies have been trying to get the ball rollin' for a few years now, but we haven't really seen a solar charger hit the sweet spot between convenience and performance that makes us want to shell out our hard earned dough (or ill-gotten booty). Regen's ReNu doesn't look bad, for example, but it's not exactly something you can take camping. If you are a Grizzly Adams-type, however, Power HotSpot might be something worth looking into. The latest from Solis Energy, a company heretofore known for its commercial solar products, this is a portable unit that can power 12 volt "noncritical" devices via a standard car power adaptor, anywhere that gets a decent amount of sunlight. Retails for $375. PR after the break.
TDK unveils fashionable, colorful solar chargers (video)
Solar power is something we've seen touted in every big tech trade show for as long as we can remember, but it's taken until recently to make it a bit easier on the eyes. Enter TDK's design-, color-, and sun-enhanced chargers, found hanging out under a hard light in the back of the company's CEATEC booth casually powering a fan. It's definitely a step up from dark paneling, so how long until we see this applied to some stylish mobile phones, eh world? Video after the break. %Gallery-74891%
