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  • Apple Working on Method to Extend Battery Life


    With Apple coming out with devices that are both thinner in profile and more powerful, battery life is going to become even more of a concern than it is today. Apple's industrial design pretty much prohibits the idea of going with a larger battery, so the only option is to pack more power in a smaller space. This appears to be exactly the tack the company is taking, as a patent was revealed today showing a new charging method that would increase the capacity of a lithium battery.

    The patent, called "Increasing Energy Density in Rechargeable Lithium Battery Cells," details how a battery's gravimetric and volumetric energy density would be improved using a multi-step constant-current constant-voltage (CC-CV) charging technique. CC-CV in general involves charging at a higher initial constant current until the battery is almost charged, then the charging at a constant voltage until the charge current drops and the battery is fully charged. This patent involves breaking that down into steps: first charging to 50% with constant current and following up with a period of constant voltage, repeating in smaller and smaller steps until the battery is charged. Using this technique, Apple claims they can produce batteries with larger charging elements - thereby increasing battery life - while keeping charge time the same.

    CC-CV charging is not a new discovery, and one of the significant drawbacks with the technique is that it significant decreases battery life at lower temperature, with significant degradation at just 10 C or below. Also, leaving the battery attached to a traditional CC-CV charger can reduce the number of charge cycles through overvoltage. Apple's multi-step technique purports to avoid these obstacles by adjusting for either temperature or voltage using smart sensors.

    Though the mere existence of a patent doesn't mean Apple is going to implement the technology any time soon, it's worth noting that this patent was applied for in August 2009. So it's entirely possible that work on this project has continued, with improvements to come in the near future with a new generation of devices.

    Source: Electronista
    This article was originally published in forum thread: Apple Working on Method to Extend Battery Life started by Paul Daniel Ash View original post
    Comments 51 Comments
    1. joeythelantern's Avatar
      joeythelantern -
      hopefully they can figure this out.
    1. awesomeSlayer's Avatar
      awesomeSlayer -
      The battery in my iPod touch 4 is around 2-3 days when inactive.
    1. Zokunei's Avatar
      Zokunei -
      Quote Originally Posted by awesomeSlayer View Post
      The battery in my iPod touch 4 is around 2-3 days when inactive.
      It's supposed to be 300 hrs on a 2g

      Apple lies I guess
    1. GellBrake'rrrr's Avatar
      GellBrake'rrrr -
      Who can complain about a longer lasting battery? Huh???.... Well, besides battery companies who make their loot from short term products. I don't need to name them, but the list goes on, and on, and.... You get the point.

      Thank GOD this is one road that apple takes that keeps us from spending more, and more money on extra batteries.

      Don't get me wrong here.... There are times that I wish I could buy another battery and have a backup for when I'm done with the first one. But then again, as long as you charge your battery enough, or as often as possible, this /shouldn't/ be an issue.
    1. badass1469's Avatar
      badass1469 -
      Quote Originally Posted by garstie View Post
      Fantastic longer fun
      Thats what she said. lol
    1. Zokunei's Avatar
      Zokunei -
      Quote Originally Posted by badass1469 View Post
      Thats what she said. lol
      I'm pretty sure that's why he said it.
    1. dd721's Avatar
      dd721 -
      I love the battery life of my iPhone 4.


      Sent from my iPhone using ModMyi
    1. fklentz's Avatar
      fklentz -
      Why don't they just make it easy to swap batteries? The i4 battery is easy to change BUT Not designed to be swapped by the user. Having a few extra batteries and being able to easily change them would end all the battery life issues end.
    1. Major Herbie's Avatar
      Major Herbie -
      They didn't release the White iPhone 4 because of such a silly thing as light bleeding but they didn't fix something as important as the battery life. My iPhone4 lasts a day.
    1. Zokunei's Avatar
      Zokunei -
      Quote Originally Posted by Major Herbie View Post
      They didn't release the White iPhone 4 because of such a silly thing as light bleeding but they didn't fix something as important as the battery life. My iPhone4 lasts a day.
      Don't forget how they didn't fix something as important as signal :/
    1. Major Herbie's Avatar
      Major Herbie -
      Quote Originally Posted by Zokunei View Post
      Don't forget how they didn't fix something as important as signal :/
      I have a case on mine but for people who don't then that another problem, hell the "Fixed" iPhone made for Verizon is still sh!t. The antenna is slightly higher and still has the death grip.
    1. Zokunei's Avatar
      Zokunei -
      Quote Originally Posted by Major Herbie View Post
      I have a case on mine but for people who don't then that another problem, hell the "Fixed" iPhone made for Verizon is still sh!t. The antenna is slightly higher and still has the death grip.
      Yeah I thought iPhones were always notorious for having poor signal without being gripped too.
    1. Major Herbie's Avatar
      Major Herbie -
      Quote Originally Posted by Zokunei View Post
      Yeah I thought iPhones were always notorious for having poor signal without being gripped too.
      Yeah, i got full bars for the first time yesterday. I was right under the tower so i think that's why.
    1. Zokunei's Avatar
      Zokunei -
      LOL
    1. Major Herbie's Avatar
      Major Herbie -
      I'm thinking of changing my iPhone to white, I'm sick of Black.
    1. steve-z17's Avatar
      steve-z17 -
      Quote Originally Posted by Major Herbie View Post
      Yeah, i got full bars for the first time yesterday. I was right under the tower so i think that's why.
      Let me guess, you were connected directly into it right?....
    1. Major Herbie's Avatar
      Major Herbie -
      Quote Originally Posted by steve-z17 View Post
      Let me guess, you were connected directly into it right?....
      Lol
      I really wish they'd recall all the iPhone4's and replace them with iPhone5's a week before they come out just to compensate us for all the bullsh!t. They don't release the White iPhone4 for sh!t reasons but they release not one but two Black versions that don't work properly. It really p!sses me off sometimes
    1. steve-z17's Avatar
      steve-z17 -
      Quote Originally Posted by Major Herbie View Post
      Lol
      I really wish they'd recall all the iPhone4's and replace them with iPhone5's a week before they come out just to compensate us for all the bullsh!t. They don't release the White iPhone4 for sh!t reasons but they release not one but two Black versions that don't work properly. It really p!sses me off sometimes
      That's the world I one day want to live in haha

      I love the iPhone 4, it's the greatest..just not the antenna issues. Oh well, iPhone 5 here we come!
    1. Major Herbie's Avatar
      Major Herbie -
      Quote Originally Posted by steve-z17 View Post
      That's the world I one day want to live in haha

      I love the iPhone 4, it's the greatest..just not the antenna issues. Oh well, iPhone 5 here we come!
      Yeah, i love the screen and how it rapes the old iPhones but the Antenna sucks and the glass breaks to easy. Also White iPhones look pretty sexy.
    1. AnthonyGiola's Avatar
      AnthonyGiola -
      Quote Originally Posted by Major Herbie View Post
      I have a case on mine but for people who don't then that another problem, hell the "Fixed" iPhone made for Verizon is still sh!t. The antenna is slightly higher and still has the death grip.
      It wasn't "fixed" nobody ever said it was. AT&T would prolly sue somehow if Verizon got a fixed version but they didnt lol. Either way though honestly if you are walking around hugging your phone in your hands then you probably shouldnt be using a phone at all.