Prepare for the next level

Discussion in 'Pyra News' started by EvilDragon, Mar 10, 2014.

  1. Majin Wamu

    Majin Wamu Powered by Pixels

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    I am quite curious too. I was wondering but I was kind of afraid to ask...cuz I don't think I truly understand the harm.
     
  2. pmprog

    pmprog Advanced Member

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    Maybe because a phone's life span is about 2 weeks before the next upgrade? :)
    Just kidding. I too would like to know, and it's not just phones, but tablets, netbooks, laptops, etc.

    Could the battery case not just be made a little bigger than necessary to hold the battery's insides, giving room to expand within the confines of the physical case?
     
  3. azmodan79

    azmodan79 Still Fresh

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    Sorry if it's already been asked/discussed before:

    What about the audio section? Will it have a dedicated headphone amp? Will it have a dac?
     
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  4. TrashyMG

    TrashyMG Sarcasm Dispenser Staff Member

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    Well you should see the bulging battery in my old flip phone, Smartphones mostly use lithium ION which doesn't swell. Also every phone I've owned had soft lids. 
     
  5. EvilDragon

    EvilDragon Administrator Staff Member

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    I've got four different phones with huge batteries now (which I should get rid of, btw).

    From various manufacturers.

    And I haven't seen a smartphone where you slide in your battery...
     
  6. thatgui

    thatgui Advanced Member

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    Ah ok, I guess I lack the personal experience, did not own many cellphones over the years, and the only "old" phones I see are usually already "converted" into toys, so they already are months or even years away from a charger.
    I wasn't adressing the "slide in" idea in particular - I just always wondered why the Pandoras battery has no hard shell.
     
  7. WizardStan

    WizardStan Mega GP Mania

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    I have two phone batteries which prove that it most certainly is a problem with them.
     
  8. God Ginrai

    God Ginrai Godmaster

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    From what I understand, using the soft shell makes them more durable and less likely to explode.

    -God Ginrai
     
  9. Pritchy

    Pritchy Member

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    I'd also guess that the much larger size of the Pandora/Pyra battery makes this a more prominent problem than a small phone battery? I had a couple of Blackberry phone batteries that swelled, one was the official battery included with the phone. It certainly happens.
     
  10. hitbyambulance

    hitbyambulance Active Member

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    Yup, had a swollen Blackberry battery also.
     
  11. hailrazer

    hailrazer Moderator Staff Member

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    They do make Lithium polymer in a hard case.   But it makes it thicker obviously. 
     
  12. mcobit

    mcobit Advanced Member

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    The battery of my HTC HD2 was so thick that I couldn't fit the cover anymore. I guess I was lucky that it is not in a hardcase.
     
  13. Schugy

    Schugy Still Fresh

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    Which antenna will be used? 2J, Taoglas? I hope Pyra supports simultanous BT/WIFI.
     
  14. comradekingu

    comradekingu Glowing ember

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    Schugy: http://hackaday.com/2014/02/28/pcb-antenna-reference-designs/ I suppose anything that isnt a 3d antenna design is up for consideration.

    It could be if the whole ordeals unscrews from the top. Should the battery get stuck you can then unscrew the PCB and lift it up from underneath.
     
    Last edited by a moderator: Mar 13, 2014
  15. bzar

    bzar A Commando

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    ^ Assuming you notice it in time. If you don't, the bulging battery may bend and break stuff inside your pyra. How much pressure can the battery take in the crammed space before bursting violently? I have to admit I have no idea of the magnitude of anything regarding this :)
     
  16. doragasu

    doragasu Member

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    I own a Nokia 5800 with a greatly bulged battery (it almost doesn't fit now inside the case) and also a much older SonyEriccson T610 that also had this problem. I own also a Nokia N80 that didn't suffer this problem, dunno why sometimes batteries get fat and other times they don't.
     
  17. comradekingu

    comradekingu Glowing ember

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    B-zar, it would damage the screwthreads if anything, since it bulges evenly (?). Then again, a system which snaps in place would solve this. Much like the current battery hatch does. Ball rivets locking into round sockets instead of screws would probably be better than something which looks like it should be opened.

    And in im favour of that since its tool-less and hacker friendly.

    Certainly it would be usable more times than self-riveting screws in plastic is.

    To flex a PCB to where it breaks means more than 30 degrees at an angle, and a high amount of force.

    Edit: Would be interesting to know the limits of the plastic production, because in my head i see the desire for a design that has an additional boundary component where the battery slides in from the side.
     
    Last edited by a moderator: Mar 13, 2014
  18. Klumpen

    Klumpen Run away! Run away!

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    Please tell me, that you do not press these time bombs against your head.
     
  19. xiongxioi

    xiongxioi Member

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    I think I heard it from somewhere that Lithium battery usually swell up due to large current. I guess it can be prevented to some degree by putting a current limiting charging circuit in there.

    But, this might not be the only reason batteries go bulged.
     
  20. Granitehead

    Granitehead Advanced Member

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    I think it would probably first start to burn and stink before it explodes so you would have time to throw it away - wouldn't it? :)
     

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