Share this project

Done

Share this project

Done
CoBattery is a swappable battery case that eliminates the need to plug in your phone.
CoBattery is now shipping!
CoBattery is now shipping!
380 backers pledged $61,774 to help bring this project to life.

About

CoBattery: Never plug in your iPhone again. project video thumbnail
Replay with sound
Play with
sound

CoBattery: Never plug in your iPhone again.

$61,774

380

Are you frustrated with your iPhone's battery life? Has your phone ever died while you were traveling, or out with friends? Do you find yourself carrying around a charger or battery pack in your pocket or purse, because you're worried that your iPhone might die?

CoBattery is an iPhone battery case that eliminates the need to plug in your phone. CoBattery replaces conventional charging with battery swapping. The system comes with two batteries and a charging dock. One battery stays in the case, keeping your iPhone at 100%. The other battery stays in the charging dock. When you come home, swap the used battery with the one in the dock–giving you a full charge in seconds.

CoBattery supports iPhone 5, 5S, 6 and 6 Plus. We are selling a limited quantity of early bird units right now for $60.

With CoBattery you don't need to wait around while your phone charges. Let the battery charge while you go about your day, and swap whenever it's convenient for you. Don't spend your life tethered to a wall.

Each battery stores 3200 mAh (12.2 watt hours), which is more than 1.5x the size of the iPhone 6 internal battery. This mean with CoBattery installed, you have 2.5 times more battery than a regular iPhone. This gives you over two days of regular phone usage. What will you do when you never need to worry about battery life?

Additional batteries will be available for purchase, and they aren't expensive. Buy a few extra batteries to keep in your backpack or purse, and you'll be covered even on the longest of journeys or most unexpected of circumstances.

Ever notice how your phone battery gets worse and worse over time? Lithium-ion batteries, like the one in your iPhone, lose a little bit of capacity after each discharge/recharge cycle. In just a year of typical use, your iPhone's battery goes through 300 cycles.

The CoBattery case protects your internal iPhone battery from this damaging cycling pattern. When you put a charged battery on your CoBattery case it will first charge the internal iPhone battery to 100% and from then on the phone will run off the battery on the case. With normal usage, your internal iPhone battery will remain at 100% charge, and your phone runs off of the CoBattery.

In case of a bad fall, the battery is designed to eject, absorbing kinetic energy and protecting your phone. We use high strength, shock resistant plastic to ensure that CoBattery protects your iPhone even during very hard falls.

CoBattery fits snugly around your iPhone, maintaining its sleek profile. Have you ever noticed that almost all battery cases extend past the bottom of your phone by 1 cm or more? We have designed a custom lightning connector that fits flush along the bottom of your iPhone, so you can enjoy no longer worrying about your phone's battery without compromising its stunning design.

The CoBattery case weighs just 2.57 oz (73g), including the removable battery.

Life doesn’t have a regular schedule and neither do you. CoBattery allows you to seize the moment and take advantage of opportunities when they come up. With CoBattery you have full charge to pursue your passions.

Take CoBattery on a long hike, and you can be sure you'll have enough charge to navigate your way home. Love to travel? Throw a few charged batteries into your backpack to give you charge for a week!

Kanye West or Kenny Chesney. Coachella or Tomorrowland. No matter your style, CoBattery will keep you rocking. Make sure that when your band comes on you’re in the first row and not caught up at a charging station.

The more your family and friends use CoBattery, the better it works! Dropping by a friend's place while on a long trip, or before a big night out? Swap batteries at their charging dock for a full charge!

The final design of CoBattery is the result of countless prototypes and iterations. Throughout the process, beta testers in Boston and San Francisco provided us real-world feedback on the CoBattery system. 3D printing has enabled us to move quickly. After receiving a suggestion, we were often able to implement the change and have a new prototype ready  that same day.

Assorted CoBattery Prototypes
Assorted CoBattery Prototypes
3D printing a CoBattery prototype
3D printing a CoBattery prototype

Video credit goes to Jake Bushell and Jake Block of Bushell Film. 

We couldn't have done this without a lot of support from friends and early customers. Special thanks to: Connie Huang, Ryan Oliver, Max Kolysh, Katie Bodner, Matt Guthmiller, Delian Asparouhov, Ryan Lau, Ross Filippini, David Benhaim, Gordon Wintrob, David Ashpole, Jason Strauss, Alex Springer, Ife Bakare, David Sessoms, Mihika Prabhu, Jessica Anderson, and many more!

Risks and challenges

CoBattery is nearly complete. All cases shown on this page and in the videos were built using essentially the same technology that will be used in our production product. We have already sold beta prototypes in Boston and San Francisco, and customers love CoBattery.

We’re currently ramping up with our suppliers and manufacturers and are ready to meet the estimated delivery times.

Forecasting Risk

We’ve done our very best to forecast demand and create a solid production plan. Sometimes forecasts don’t always hit the mark. Should we miss projections, we’ll let you know why and make it right as quickly as possible.

Supply Chain Risk

We’ve built a very capable team. However, component delays and unexpected shortages can occur. If this happens, we’ll be sure to keep you informed and work to quickly solve any problems that come up.

Learn about accountability on Kickstarter

Questions about this project? Check out the FAQ

Support

  1. Select this reward

    Pledge $5 or more About $5

    Supporter

    Don't have an iPhone but would love CoBattery? Give us input on which phone we should support next.

    We will also send you some CoBattery stickers with our sleek logo.

    Less
    Estimated delivery
    Ships to Anywhere in the world
    22 backers
    $
    Kickstarter is not a store.

    It's a way to bring creative projects to life.

    Learn more about accountability.
  2. Reward no longer available

    Pledge $60 or more About $60

    CoBattery Early Bird (iPhone 5/5s/6/6+)

    Be one of the first to get a CoBattery case with 2 batteries and a charger included. Join the future and never plug in your phone again.

    Less
    Estimated delivery
    Ships to Anywhere in the world
    Reward no longer available 150 backers
    $
    Kickstarter is not a store.

    It's a way to bring creative projects to life.

    Learn more about accountability.
  3. Select this reward

    Pledge $75 or more About $75

    CoBattery iPhone Case (iPhone 5/5s/6/6+)

    Get a CoBattery case with 2 batteries and a charger included. Amaze your friends by going completely wireless.

    Less
    Estimated delivery
    Ships to Anywhere in the world
    177 backers
    $
    Kickstarter is not a store.

    It's a way to bring creative projects to life.

    Learn more about accountability.
  4. Select this reward

    Pledge $700 or more About $700

    CoBattery 10 Pack

    Get 10 CoBattery cases to resell or give out to friends and family. We will also give you support 24/7.

    Less
    Estimated delivery
    Ships to Anywhere in the world
    9 backers
    $
    Kickstarter is not a store.

    It's a way to bring creative projects to life.

    Learn more about accountability.
  5. Select this reward

    Pledge $5,000 or more About $5,000

    CoBattery TYCOON

    Take a tour of our office and see how we developed CoBattery. Get limited edition CoBattery cases for 10 of your closest friends.

    Interested in more details about buying in bulk or becoming a CoBattery distributor?

    Email us at team@cobattery.com

    Less
    Estimated delivery
    Ships to Anywhere in the world
    Limited 1 backer
    $
    Kickstarter is not a store.

    It's a way to bring creative projects to life.

    Learn more about accountability.

Funding period

- (30 days)