About this project
When the project ends you can order Legion here:
What is Legion?
Legion is a portable energy source with a built-in Organic LED display coupled with a microprocessor. It can charge any USB powered electronic devices. Unlike a traditional portable battery where you're left in the dark about the state of charge of your battery, Legion learns how you use your electronic devices and displays precisely how much more time (day:hours:minutes) you have remaining until you run out of power. Legion uses premium grade Lithium Polymer batteries designed to maximize your energy density while packing it into the smallest area possible. Legion is proudly designed in Silicon Valley, California.
Available Sizes and Colors
- 5500 mAh (Single 1A Output) White and Black (2.45 x 4.32 x 0.45 inches)
- 11000 mAh (Dual 1A and 2A Outputs) White and Black (3.5 x 5.625 x 0.45 inches)
*First prototype shown above
Intelligent OLED Display
Charge Your Phone Faster
Not all USB power sources are the same. USB wall outlets, desktops, laptops, and solar panels all charge your phone at different rates. With Legion, you'll be able to identify which power plug is capable of delivering the most power by simply toggling to the Watts and Amps menus. The Watts and Amps menus will display your precise charge power and current in numeric form on the Organic LED display. This allows you to identify which USB power source is optimal for charging Legion or any of your electronic devices as quickly as possible.
Our First Stretch Goal is $100.000 - All Legion backers get a FREE Multifunctional Retractable 6 in 1 USB A to Micro/Mini 5pin/30pin/lightning 8pin/DC 2.5mm (Nokia round cable)/Samsung P1000 + Dual USB 2A Wall Charger or Dual USB 2A Car Charger
Our Second Stretch Goal is $150.000 - Third Color * Choose between Black, White and Red Legion + All Legion backers get a FREE T-shirt.
Mobility and Travel
Legion comes with a free water resistant carrying case and a retractable USB charging cable. It can be used to hold both your mobile phone and Legion simultaneously.
Power. Anytime. Anywhere
Concept to Production
We have competed the design and optimization of Legion. Now we're ready to go to full production.
Electronics Manufacturing and Assembly - Manufacturing the electronics requires a fiberglass base board with copper interconnects called a printed circuit board (PCB). Legion's complex electronics requires that the PCB be manufactured with the tightest of tolerances to ensure reliable electrical connections between the dozens on components to be place on it. Manufacturing the PCB is just half of the story. Assembling the electronics onto the PCB requires precise machines to place and solder the tiny components. Finally, x-rays are used to inspect the quality of the solder for any micro cracks, and/or any poor electrical connections. We've taken several years establishing strong partners in Asia to perform such a complicated process and we're very confident in our partner's ability to manufacture Legion's electronics with the highest quality standards. Here are some pictures of the machines used to manufacture Legion's electronics.
Aluminum Core - Manufacturing Legion's core requires a process called die casting. Die casting is a process which forces high pressure molten metal into a cavity. The cavity forms is an inverted shape of the center aluminum core. When the metal releases from the mold, the desired shape is formed. The aluminum will be sanded, and polished to create a smooth and shiny luster. Here are some pictures from our manufacturing partner in Asia who will be performing the die casting for Legion's center aluminum core.
Plastic Panels - Manufacturing the plastic top, bottom and button of Legion requires a process called injection molding. Injection molding is a process of injecting molten material into a cavity. The cavity forms the inverted shape of the actual part you're creating. High grade, impact resistant plastic will be used for all of Legion's plastic parts. Here are some pictures from our manufacturing partner in Asia who will be performing the injection molding for Legion's plastic components.
Paul Lowchareonkul - President and CEO of PLX Devices. Paul is also the chief designer of Legion. He has successfully taken over 30+ products to market in the last 10 years. He specializes in electrical and computer engineering.
Michael Morales - Responsible for sales, and providing excellent customer service.
Ivana Trananovska - Manages the logistics and oversees the marketing.
Joseph Tankeh - Ensures all electronics circuits are fully functional.
Shauna Roth - Responsible for the mechanical assembly.
Kevin Kwong - Responsible for testing the quality of the products.
- Apple: iPhone, iPad Mini, iPad
- Samsung: Samsung Galaxy S4 S3 S2 S Note 2 Nexus, Ace, Focus, Odyssey
- Google: Nexus 7, Nexus 10
- HTC: One X S V, Sensation XE XL, Inspire, Droid, ThunderBolt, EVO, Radar, Titan
- LG: Nexus 4, Optimus, Touch, Spectrum
- Motorola: Droid Razr Maxx Bionic, Triumph, Photon
- Sony: Sony Xperia Z J P
- Blackberry: Blackberry Z10, Curve
- Amazon: Kindle, Kindle Fire
- Nokia: Lumia
- Other: PLX Yaba, PLX Yaba X, GoPro, MP3, MP4, PS Vita, Pebble
*Standard iPad requires a 2A output.
- Legion Ultimate Power main battery unit
- Legion retail box
- USB Male A to Micro USB retractable cable
- Legion water resistant travel case
- User manual
- 1 year manufacturers warranty
- M-F 8am-5pm PST phone customer service
Legion is patent pending.
Legion employs several advances in electronics. The use of an Organic LED display offers several advantages over that of a traditional back lit LCD display. OLED's are thinner, have a 180 degree viewing angle, 10,000:1 contrast ratio, and OLEDs only consume power when an actual pixel is lit. Legion uses the same display technologies as our other PLX Devices award winning automotive gauges.
Legion's microprocessor (CPU) is used to control the OLED display, implement the smart battery metering detection/algorithms, and interface with on-board sensors. It utilizes the world's lowest sleep and standby power which draw just nanoamps. This allows for Legion to consume almost no power when it is not in use and delivers crystal clear animations at high refresh rates. The CPU acts as the gate keeper between any flow of current in and out of the battery. It samples the flow of electrons at roughly 100 times/second. This makes Legion's battery metering calculations extremely accurate.
The USB 5V output uses a DC/DC (Boost) circuit. It is used to convert the lithium polymer battery's voltage from 3.0V-4.2V to a stable 5.0V output. In low cost products, this voltage conversion is done very poorly where the efficiency of conversion is measured to be roughly 80%. Legion uses high grade components delivering up to 97% efficiency. This means that you'll be able to utilize more of your battery's stored energy than other batteries on the market today. A 17% difference in energy conversion efficiency means that for a 11,000mAh battery, 1870mAh is simply going to waste in the form of heat.
Risks and challenges
PLX Devices has been designing and successfully bringing products to market for over 10 years. On this project, our biggest challenge is to ensure that all the batteries are screened and tested so that Legion delivers unsurpassed power and performance. Legion is the first product that we've designed which utilizes a lithium batteries. We will also be working very closely with our suppliers to ensure that they deliver us the highest quality aluminum, plastics and electronics.
We already have our manufacturing all setup in some of the world's best factories which adhere to internationally recognized quality standards and procedures such as ISO9001, ISO/TS 16949, ISO 14000, TQM, SPC.
The prototypes are finished and we're ready to go into production. We need your help and we hope you'll join us.
Thank you!Learn about accountability on Kickstarter
4.4oz for the 5,500mAh and 9oz for the 11,000mAh.
If your Raspberry Pi uses a 5V USB input to power then yes, Legion will be able to power it.
Yes Legion 11,000mAh will be able to power the Samsung note tablet just fine. Be sure to use the 2A output.
Charging is done with the provided micro USB retractable cable. Just plug the micro USB cable into legion and the other end to any USB power source.
A 2 amp power source is preferred for the 11,000 mAh. This will allow it to charge in about 5-6 hours. Otherwise with a 1A wall adapter it will charge Legion 5500 in 5-6 hours and Legion 11000 in about 11-12 hours.
Yes the battery can be charge at the same time that it is being used.
The Legion 11,000mAh with 2A output should be able to charge it without any problems.
The short answer is around 6 months. Any battery technology, especially lithium polymer batteries don't like to be stored in heat. Cars in the summer can reach upward temperatures of 110 deg F+. If that is the case for your car, the standby time will shorten depending on the amount of time your cells are exposed to high temperatures. If you live in a very cold (near freeing) environment, you can see 6 months + of standby time.
The iPhone 5 has a 1400mAh battery. With Legion 5500mAh you can charge the iPhone 5 3.92 times. With Legion 11,000mAh you can charge 7.85 times.
To fully charge Legion from 0% charge to 100% charge takes roughly 6-7 hours. To charge Legion from 0% to 80% charge takes roughly 4 hours.
Legion does not have an LED light.
The difference between the 1Amp and 2Amp output is the maximum rate at which current can be supplied. For example, in your home, your wall output is typically rated at 10 amps or 20 amps. If you connect a 60 watt light bulb you will only draw 0.54 Amps. The point here is that the device that is being connected to the energy source dictates how much current is needed. As long as the device uses less than what the energy source is capable of supplying you're golden. The problem with some tablets (iPad, etc) is that it requires more than 1 amp. By connecting an iPad to a 1 Amp USB outlet, the USB outlet simply can't supply enough current that the iPad requires. In such a case the software in the iPad will simply show unable to charge or it will slow down the charge rate. By using a 2 Amp USB output solves this current deficiency, allowing you to charge devices which require more current. It is always better off using a higher current USB output for all of your electronic devices, because your device will simply draw what it needs.
Yes, you can charge Legion with a solar panel. If the solar panel is design to charge mobile devices with a USB input.
Support this project
- (35 days)