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If I understood this correctly, this is based on a higher (but unknown to consumers?) chance that the Galaxy Note 7 's battery could explode during flight and c
by bwang29 10y ago
If I understood this correctly, this is based on a higher (but unknown to consumers?) chance that the Galaxy Note 7 's battery could explode during flight and catch fire. Then, what would be considered a chance high enough that a laptop battery's explosion would not be a concern? Would it be safer to lock these phones into an explosion-proof box before they onboard the flight?
- gilgoomesh 10y agoThe batteries don't "explode" – they self-combust. Better to have the phone out in the open (so you can see it catching fire) and throw it in a bucket of cold water – the water will absorb most of the heat and prevent the fire getting out of control (it won't extinguish the fire, which will continue in the water).
- wfunction 10y agoI'm confused. I thought trying to put out lithium fires with water was an awful idea?
- blkhawk 10y agoRechargable Lithium batteries contain surprisingly limited amounts of it. And its not in there in its elemental form anyway. Lithium batteries burn because of the potential energy they have after charging. You can drive nails through discharged Lithium Ion batteries without much happening.
- deleted 10y ago[deleted]
- tyho 10y agoPlease don't do this, when rechargable lithium batteries are "discharged", they are not discharged fully, doing so would damage the battery. Charging circuits have a "cutoff" voltage where they report the battery to be empty, but there is still plenty of stored energy in the cells.
- userbinator 10y agoThere is very little energy left past the "knee" where the cutoff is.
- herpaDurp 10y agoOh, probably just the GLOBAL RECALL of that model in particular, due to actual BATTERY FIRES, or whatever. [0] [0] http://www.wsj.com/articles/samsung-to-recall-galaxy-note-7-smartphone-1472805076 http://www.wsj.com/articles/samsung-to-recall-galaxy-note-7-... But yeah, other than that, who knows?
- ghshephard 10y agoEvery story I've read has either had an incident while the Phone charging. Any reports of incidents while the device was simply being used? Or even more unlikely, powered down? Note that the the FAA is just encouraging you to (1) Not check them in luggage (where nobody can put a fire out easily), (2) Not charge them, (3) Use them inflight. I haven't seen any problems with the phone in a powered down state - anybody else?
- exodust 10y agoThe risk is only while the Samsung device is charging (as I recall?). As for other devices, I suppose they could issue the warning "please do not hit your device with a hammer during flight". Fun fact I read recently: more than a million people are in the air at any one time, globally. If laptop batteries exploded even rarely, we'd hear about it.
- colechristensen 10y agoIt depends on the mode of failure, but these problems happen when a battery is stressed. Charging or discharging at a high rate especially with high temperatures and during/after physical stress can cause runaways. Protection circuitry is supposed to prevent runaways, something is obviously failing. It could be an overheating component or faulty high voltage protection circuits or simply just bad thermal design.
- FabHK 10y agoThe Aviation Herald lists a few incidents involving batteries: http://avherald.com/h?search_term=batter&opt=0&dosearch=1&search.x=0&search.y=0 http://avherald.com/h?search_term=batter&opt=0&dosearch=1&se...
- exodust 10y agoNice find. No doubt batteries are a hazard particularly when exposed/not installed in devices as many of these examples describe... batteries found squashed between the seat and so on. If we remove cases of smoking loose batteries, or crushed devices in luggage, the failure rate is extremely low.
- leetrout 10y agoThis is actually my #1 fear in flying in 2016. Some rough baggage packing under the plane that damages a laptop battery in the gate checked bag. Every time I fly I watch people gate check bags with laptops and more even after the announcement to "remove all lithium batteries & electronics". I wish more people understood how dangerous this could be and would take 3 minutes to take electronics out and carry them on board with them.
- ubernostrum 10y agoEven for gate-checked bags, the gate agent is supposed to announce that lithium batteries cannot be in the bag, and should probably confirm that with the passenger when tagging the bag.
- nradov 10y agoSome people have no idea what battery chemistry is in their laptops. Especially for models where the battery isn't even removable. I don't mean this as a criticism, it's just not necessarily something that everyone notices.
- leetrout 10y agoYea, I think this is really the crux of it. The GA nor the pax know whether or not a battery or device is Li-ion. Edit: or I guess if it was just a battery they could read on it but I bet that never ever happens.
- wfunction 10y agoAre you saying there are laptops with batteries that don't fall in this dangerous category, or are you saying people don't know that all laptop batteries fall in this category?
- antocv 10y agoThere are people who think their laptops do not have a battery at all and run on their own power like a human does.