About this project
Green greetings (in different languages) from sky.
YOLK is attending in Outdoor retailer show and nominated as 5 MUST SEE booths of the entire show. YEAH~!
Charging iPad air2 at 1.58A load current with 4 panels of Solar Paper & 1.97A load current with 5 panels of Solar Paper.
( 1.58A is the load current that an apple 10W wall charger generate.)
Two usb ports upgrade is coming soon.
Match height with a controller?
Five panels are little lower than a controller and 6 panels are little higher than a controller. One solar panel is placed at the back of the solar panel with a controller. (It is a prototype. We will let the metal connector to encapsulated magnet. Then it will have a lot neat look.)
•Thin, Light, Fast: With Solar Paper we’re making the thinnest and lightest solar charger that can reliably charge your smartphone in about 2.5 hours on a sunny day. That’s about the same as a wall charger.
•Goes Anywhere: Solar Paper is so lightweight that outdoorsy types can clip it to a backpack and charge while hiking. Urban adventurers can easily slip it into a jacket pocket or notebook.
•Reliable and Easy to Use: Most solar chargers shut down and need to be manually reset after a cloud passes overhead and the voltage drops. Solar Paper automatically resets itself so you can keep charging, hassle free.
•Expands with Magnets: The basic 5 watt Solar Paper can charge your smartphone on a sunny day. If you need more power to charge a tablet, or to charge on a cloudy day, you can click new magnetic panels into place.
•From the same team that brought you SOLARADE, backed by 1,025 people in 2014.
•For the first batch, which we plan to ship in September 2015, we’ve already ordered all the components except for the solar panels.
Charge Anywhere Under the Sun
For Solar Paper, we’re manufacturing the latest and most efficient solar panel. Because of this, Solar Paper is the world’s smallest solar charger for the amount of potential wattage it can generate.
As part of this campaign, we’re offering 5 watt, 7.5 watt and 10 watt chargers, with 2, 3 or 4 panels, respectively. In bright sunlight, the 5 watt charger can fully charge an iPhone 6 in about 2.5 hours, which is similar to a wall charger. For more powerful devices like tablets or cameras, or for faster charging, you’ll want to opt for one of the higher-wattage versions. (There’s a handy guide further down this page to help you pick the right one.)
*We extended the Max power from 10W(4 panels in total) to 15W.(6panels in total)
Solar paper can charge almost any device that recharges via USB, including, smartphones, tablets, walkie talkies, flashlights, portable game consoles, cameras, video cameras, and rechargeable batteries. (Refer to the handy guide further down the page to help you pick the right wattage for your devices.)
Thin, Lightweight and Durable
Solar Paper measures just 9 x 19 x 1.1 cm when folded, and each panel weighs only 65~75 (2.5 oz). Watt-for-watt, it is 70 percent smaller and lighter than our closest competitor. Most importantly, Solar Paper is just 1.1 cm deep, at its thickest point, compared to 3.8 cm for our competitor, easy to carry it!
Easily Expandible Using Magnets
We wanted to make Solar Paper as compact as possible and also allow you to expand it in the future if you need to charge larger devices. Our design solution was to create a set of folding solar panels held together using strong magnets with silicon connectors. Only need two panels and want to save some weight? No problem. Just bought a tablet and need more wattage to charge it? Also not a problem.
There are a couple of other advantages of using magnets in Solar Paper, too. First, there’s no wear and tear on seams when you fold or unfold the panels, greatly extending Solar Paper’s life. The magnets are also quite strong, so you can use them to mount Solar Paper to metal objects, as shown in the picture.
Set it and Forget It
Unlike other simple devices with a battery, smart devices like smart-phones and tablets would not accept low current caused by insufficient sunlight. In this case, devices have to be manually reset. That means that users have to unplug and replug the cable every time a cloud passes overhead or you walk through a shadow. This is very inconvenient.
We wanted to make Solar Paper as easy as possible for anyone to use, so we have integrated ‘auto-comparison technology’ into the charger, to make it automatically resume powering your devices, after the sun starts soaking it again.
Geek Out with Real Time Readings
Backers from our first solar project, Solarade, suggested that we find a way to show how much solar energy the panel is generating in real time. We thought this was a great idea, because, in addition to being very cool, it would let you see how the panel performs under different weather conditions.
For Solar Paper, we’ve included an LCD amp meter that shows exactly how much current is flowing from the charger to your device at any time. We wouldn’t include this LCD if we were not absolutely confident about our technology and our product. No false advertising. No false promises.
Please help us hit our fourth $1,000,000 stretch goal, so we can throw in 4carabiners, a pouch and a micro USB cable and something more.
Picking the Right Wattage
We’re offering Solar Paper in three versions:
5 Watt (2 panels)
7.5 Watt (3 panels)
10 Watt (4 panels)
You’ll want to pick the right one so you’ll have ample power to charge your devices. We’ve put together a quick guide to help you decide.
Question 1: What’s the biggest thing I want to charge?
Smartphones need less power than tablets and most video cameras in order to charge. You can find out how much power your device needs to charge by checking your existing wall charger.
5V * 1A = 5 Watts
The charger that comes with popular smartphones like the iPhone and Galaxy S, are 5 volts, 1 amp. Just multiply these numbers to get the watts you need:
5V * 1.5A = 7.5Watts
Some larger phones like the iPhone 6+ and Galaxy Note come with a higher powered wall chargers. 10Watt will charge devices quickly and stable, but 7.5Watts will be more cost effective if you live in a place with strong sun light.
5V * 2A = 10 Watts
Charging Tablet like iPad, Galaxy Tab. In this case, you can go with the 10 watt version of Solar Paper.
If you’re charging a device that isn’t “smart”, like a flashlight or Bluetooth speaker, you can use any version of Solar Paper. Higher watts means faster charging.
Question 2: How’s the weather?
Solar Paper, like all solar panels works best in direct sunlight. If you live somewhere cloudy, (indoor artificial light will generate power, but it isn’t enough to charge devices like smartphones at all), you’ll want a higher wattage version to charge stably and quickly.
Many “smart” devices like smartphones and tablets won’t accept low power(250mA for 5W smartphones, 750mA for 10W tablets). This could happen if you’re charging on cloudy days or close to sunset, and your device will display an error message like: “This accessory is not supported.” If you’ll regularly charge in less than full sunlight, consider buying the 7.5 watt or 10 watt Solar Paper, rather than the 5 watt.
Question 3: Am I in a hurry?
Higher watts generally means faster charging, and this is especially true when you don’t have direct sunlight. The 10 watt Solar Paper has twice the potential power output of the 5 watt version.
Mission of YOLK:
After the following success of the Solarade, I established a solar company and named it YOLK. It reflects our desire to supply solar energy to electronic devices as yolk does to the fetuses. Our mission isto bring this wonderful green technology to more people. I wish YOLK can be a bridge between solar energy and people, including not only campers and hikers or early adopters but many others who face battery problems in their everyday lives. I believe that solar technology can relieve the battery problem we face and contribute to making the world greener.
YOLK is a solar company specialized in high quality solar modules and panels. While we produce our own products like Solarade(2014) and Solar Paper(2015). We also supplied customized solar modules on client’s demands. Solar modules are mainly used for iot & ict devices.
After graduating from the School of the Art Institute of Chicago with BFA emphasis in design object, I have created nolla design studio to continue doing what I love and do best: making things. After the first solar charger project, Solarade, I was attracted by the synergy of technology and design. So I founded a solar charger company, YOLK. YOLK is a small company for now, but this team has the world's top solar techonology and a vision to spread this wonderful green technology to everyone's daily life. You will find the most innovative and advanced solar products at YOLK.
Sam Lim has been working in power industry for over 18 years and solar industry for 7 years. He has numerous patents and a wide arrange of experiences with developing power products.
Previous KickStarter Solar project was done by my personal KickStarter account in 2014. We made YOLK’s new KickStarter ID since we plan to keep launch the innovative solar charger at here KickStarter.
Risks and challenges
"Solar Paper" is a our second kickstarter solar charger project. We did our best to successfully deliver what we promised to our Solarade backers and we will do the same for backers of Solar Paper. However, component delays and unexpected shortage can happen. In that case, we will inform you and do our best to solve the problem.Learn about accountability on Kickstarter
The solar panel of Solar Paper are is water resistant. ( IPcode 64) However, an USB part is susceptible to corrosion so make sure to dry it well after exposure to water. If the panels have been exposed to seawater or water with salinity, rinsed the panels with clean water and dry.
Water resistant level IP64. Here is a link about IPcode wikipedia.
"First digit, 6, means: Dust tight No ingress of dust; complete protection against contact (dust tight). Second degin, 4, means: Splashing of water Water splashing against the enclosure from any direction shall have no harmful effect.“
Immersion in water will also be okay(not strongly recommended ) but make sure to dry it thoroughly.
Since Solar Paper's PCB is upgraded from 5V, 2A to 5V, 3A, increasing the number of usb port is neccessary in terms of efficient usage. Therefore, Solar Paper will have one usb port for Android devices and one usb port for Apple devices.
<Magnets and metal parts>
We want the embeded magnets to be stronger for better contact between solar panels.
Magnets will be 15% longer than as shown in the video, and the length of metal parts surrounding the magnets will increase accordingly. It will give more robust feel as well.
We originally design Solar Paper to connect up to 4 solar panels. (2.5W x 4 = 10W Max).
But there were requests from backers to connect solar panels more than 4.because intensity of sun light is not always ideal. We are currently reviewing possibility about adding 1 or 2 more solar panels from 10W, so it can be 15W Max. We will inform you as soon as possible when we determine about it.
We are considering to us UPS or Fedex. We will send to all the backers a tracking number/url to check the shipping status. We know how hard it can be to wait blindly for the order :D
We are planing to apply FCC and CE.
Solar Paper is a DC/DC product that does not generate large amount of electric power that can be hazardous. Therefore there is no need to obtain the mandatory certification other than above. Upon Buyer’s demand, companies could obtain other the certifications, but it will be optional.
We are trying to give you feedbacks within 24hours :D
YOLK will be exhibiting Solar Paper at the 2015 Outdoor Retailer Summer Market. Open air demo, outdoor exhibition, is on August 4th, at Cemetery Point Marina - Pineview Reservoir in Huntsville, Utah and Booth number of YOLK is D 126. And main show will be on August 5th ~ 8th at the Salt Palace Convention Center and Booth number is PV3043. Outdoor Retailer Summer Market is the largest outdoor sports show of its kind, and by participating in the show, Yolk is looking forward to demonstrating efficiency of Solar Paper and interacting with real consumers to receive feedbacks and praises!
Yolk wants interactions with global consumers as sun shines everywhere on Earth and we are bringing Solar Paper to “Tokyo Gift fair” in Japan from Sep. 2nd to 4th and “IFA“ in German from Sep 4th to 9th. Feel free to stop by at least one of these locations or all of these locations.
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- (43 days)