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New battery form factor — Parallax Forums

New battery form factor

Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
edited 2012-09-01 02:16 in General Discussion
Lithium battery in a flexible cable:

This is going to make incorporating batteries in many devices a whole lot easier. Just wad it up and stuff it in, wherever.

-Phil

Comments

  • skylightskylight Posts: 1,915
    edited 2012-08-30 14:23
    I'm thinking of an illuminated slinky :smile:
  • GadgetmanGadgetman Posts: 2,436
    edited 2012-08-30 14:45
    I'm curious as to energy density...

    I also have some doubts about the resilience of the aluminium.
  • lanternfishlanternfish Posts: 366
    edited 2012-08-30 16:06
    And if you accidently crush it does it eventually catch fire/explode?
  • User NameUser Name Posts: 1,451
    edited 2012-08-30 16:43
    lanternfish wrote: »
    And if you accidently crush it does it eventually catch fire/explode?
    Yeah, like if you're using it in bracelet form and the bracelet burns up, do you lose your hand for lack of blood delivery?
  • ercoerco Posts: 20,260
    edited 2012-08-30 16:51
    Now you can give someone enough battery to hang themselves.
  • Mark_TMark_T Posts: 1,981
    edited 2012-08-30 16:54
    With apologies to Mel Brookes:

    "Vait a minute. Are you sure this
    is slow fuse? It feels like qvick
    fuse."
  • TubularTubular Posts: 4,717
    edited 2012-08-30 19:34
    I can see the next gen of portable audio now - electronics integrated into the earpiece, with a foot long (white) cable dangling out.
  • SRLMSRLM Posts: 5,045
    edited 2012-08-30 20:35
    I'm surprised they say it's going to take until 2017 to mass produce these...
  • LoopyBytelooseLoopyByteloose Posts: 12,537
    edited 2012-08-30 23:51
    I don't think heat is a problem. Frequent flexing might rupture the case. The toxicity in LiFePO technology is the Flourine gas becoming an acid.

    These would not be very child-proof.

    Parallax's Lithium Battery Pack with charger/discharge is looking better than ever to me. I bought some 18650s and a charger locally, but without controlled discharge - the kids that are using my robot have managed to immediately destroy a couple of 18650s. They should not be shorted, even with internal protection.

    So having a proper board for managing discharge as well as charge is critical to long-life of these batteries. I look 3.7 volts as I can finally use just one cell to power a microcontroller.
  • whickerwhicker Posts: 749
    edited 2012-08-31 00:14
    one of the uses a comment quickly pointed out would be to wrap this around the bezel of a laptop screen. any place with a large linear dimension.

    granted I'm pretty sure this has a minimum bend radius a few multiples of the diameter, but at the same time, it is just one more tool to create an interesting product.
  • HollyMinkowskiHollyMinkowski Posts: 1,398
    edited 2012-08-31 16:54
    I'd worry about a fire.
    Seems like you hear about some new device's battery
    overheating every few days.

    I had the battery one of those cheap Chinese keyfob cameras
    overheat while I was wearing it tied to a string like a necklace.
    My friend almost ran off the road when I screamed...lol
    (too bad I don't have that on video it would be a hit on youtube)
  • lanternfishlanternfish Posts: 366
    edited 2012-09-01 02:16
    Regarding older battery tech: I once put a 9V PP3 into my pocket after changing it out for a fresh battery in a radio mic. A few minutes later I felt a lot of heat on my thigh. Reached in and pulled out very hot battery and my key ring. Doh!
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