Samsung Ships Flameproof Boxes For Note 7 Returns (arstechnica.com)

An anonymous reader quotes a report from Ars Technica: Samsung has been forced to cease production of its disastrous Galaxy Note 7 Smartphones because they keep catching fire, but it still has to address the problem of cleaning up its mess. The phone has been recalled twice, and owners now have to send their incendiary handsets back to the South Korean firm. And that poses a bit of a problem: if you need to issue a recall for a phone that is prone to spontaneously combust, you don't want those phones catching fire in transit. Samsung's solution is a fancy "Note 7 Return Kit," and it has sent one to XDA Developers. The kit contains a special "Recovery Box" that's lined with ceramic fiber paper to provide some protection against incineration. Samsung warns that some people will have a bad reaction to this lining, so the recovery kit also includes some gloves to protect your hands. They don't appear to be flame retardant, so if your Note 7 is currently ablaze, we'd suggest minimizing contact with it. Samsung also includes a shipping label to send the phone back. The box reinforces that flying ban, noting that the devices are only to be shipped by ground, safely within reach of the quenching hoses of the fire department.

Comments

Re:Evidence please.

[HornWumpus]

Battery packs often contain current limiters.

If you're installing cells permanently, you will be tempted to do cute things with the charge circuit.

Individual cell charging is common in the RC world. (Chargers are complicated, the market is mostly junk.) It is also common to charge batteries in fire-proof bags.

Lithium batteries in consumer products need to be handled with caution. They aren't $300+ jumbo airplane batteries. If one dying cell kills the pack, that's a fair tradeoff for simplicity plus another level of current limiter.

This is completely normal for battery recalls

[Xylantiel]

I had a battery recall on a NVIDIA tablet and the return kit was a fireproof box that required ground shipping. And they weren't exploding, just failing early. This is standard procedure for any defective li-ion battery.

Re:You first.

[hey!]

Let's practice a little logic here, shall we?

Having a problem in the battery cells or pack does not preclude having a problem in the "controller chip" or any other system component. But are we multiplying entities here unnecessarily? Gratuitously attributing failure to the battery when the fires could be attributed to other system components?

No. Because li-ion battery design is supposed to prevent fires in the case of other system components/software being faulty. This is because that battery chemistry is inherently fire-prone: you have a flammable organic electrolyte bathing electrodes that release oxygen, with the entire system subject to thermal runaway. Therefore Li-ion battery packs have to be designed, like a Norman castle, according to the principle of defense-in-depth. It follows directly that any battery fires when the pack is installed in the system require failures in depth.