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Sony Portables Power

Fire Risk From Panasonic Batteries In Sony Vaio Laptops 36

Posted by Soulskill
from the reclassified-as-variable-BTU-heating-units dept.
jones_supa writes: "Sony is warning about a potential fire risk in some of its Vaio Fit 11A portable notebooks (the final model under the Vaio brand, which was sold off in February). The company is asking customers to stop using this laptop model as soon as possible. Sony said it had received three reports of overheating batteries causing partial burns to Vaio computers. The company stopped selling the product at the beginning of this month, with nearly 26,000 units in the wild. The manufacturer and company responsible for the faulty batteries is Panasonic. 'A Panasonic spokeswoman confirmed the company had provided the batteries to Sony under an outsourcing contract. She declined to say which other computer makers had received Panasonic batteries, as such information is confidential. However, she said the batteries are customized according to clients' requirements and differ depending on client.'"
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Fire Risk From Panasonic Batteries In Sony Vaio Laptops

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  • by rmdingler (1955220) on Friday April 11, 2014 @08:53AM (#46724107)
    Shit! I left the Vaio in my Tesla.
  • by jeffb (2.718) (1189693) on Friday April 11, 2014 @08:58AM (#46724135)

    ...and how does it differ from a "total burn"?

  • Screw you those cheap third party knockoffs.
    I am going for a Sorney and a Genuine Penaphonics!

  • I wonder how many people were using laptops on their laps with a blanket or pillow or something that helps obstruct the vents on the bottom. It's fun to blame Sony but some times it really does come down to user error. Those vents on the bottom aren't there just for show...
    • Re:User error? (Score:4, Insightful)

      by DoofusOfDeath (636671) on Friday April 11, 2014 @09:26AM (#46724329)

      I wonder how many people were using laptops on their laps with a blanket or pillow or something that helps obstruct the vents on the bottom. It's fun to blame Sony but some times it really does come down to user error. Those vents on the bottom aren't there just for show...

      I think it's reasonable to expect these laptops to contain thermometers and to automatically shutdown with there's a risk of fire. They're designed to be used in domestic environments with little to no training of the user.

      • Its an issue with the inherent chemistry of Li-ion batteries. The overall heat management of the machine isn't significant. Once the batteries fail from the power supply drawing or charging more than a designed current they start a thermal runaway reaction. The batteries will eventually vent a hot fiery gas. There are battery designs that are considered extremely tolerant to thermal runaway, but they have significantly lower energy density.
        • by thegarbz (1787294)

          They need to be bloody hot before they get to that point. Most problems which are capable of destroying the battery are detectable by monitoring current, voltage, and temperature. The rest are the result of physical battery damage which can not be fixed by isolating the supply.

          Try it yourself. Short the terminals of a fully charged Li Ion or LiPo battery briefly. It won't burst into flames. Hooked the terminals together for about 20 seconds on the other hand and you have a problem.

      • The battery packs do have thermometers. While I haven't seen this specific design, it is industry standard practice to incorporate negative temperature coefficient thermistors (NTC's), which allow the charger to detect battery temperature. The battery charging circuitry would definitely be designed to stop charging the battery when it is hot.

        The problem is most likely caused by faulty battery components (separator), or manufacturing impurities (particles in electrolyte) or poor process (damaging separator d

    • by namgge (777284)
      A foreseeable user error, of the type you describe should not result in equipment catching fire.
    • All hardware today will either underclock or shut down when the temperatures get toasty. It's a far cry from being able to ignite a fire.
  • by Markvs (17298) on Friday April 11, 2014 @09:18AM (#46724267) Journal
    The laptop manufacturer with an decade long ongoing power supply issue in almost every model now has battery issues? Say it isn't so! Oh, wait, this isn't 2009. We've already done this.
    http://hothardware.com/News/So... [hothardware.com]
  • I was just pushed to Slashdot Beta. Truthfully, this is the first time I've taken a hard look at it. After some time giving it a real chance, I've decided the comment section is the most troublesome (still?) with the lack of truncated comments and abysmal contrast between the background and the separation delineations.

    I thought they backed the fuck off of beta? Why is it back?
  • where they on MH370 and will need to be ban them on other flights as well?

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