*slaps forehead* :/
Explosive technology flaws - 'Smart' phones
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It's not just smartphones either. I had a near miss tonight... 
Whilst cooking some hot dogs for my daughter & I no less than 3 exploded in the saucepan. This could have been ugly if I stuck my face in it when they let go. :lol:
Whilst cooking some hot dogs for my daughter & I no less than 3 exploded in the saucepan. This could have been ugly if I stuck my face in it when they let go. :lol:
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People have been serverly burnt by laptops. I reckon the first vid sooo fake, whats with the police sirens, screaming cars, and dog sound effects lol
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mbasko said:It's not just smartphones either. I had a near miss tonight...
Whilst cooking some hot dogs for my daughter & I no less than 3 exploded in the saucepan. This could have been ugly if I stuck my face in it when they let go. :lol:
As a teen, we threw a can of baked beans into the fire. Still remember laughing at my mates landcruiser, with beans stuck to it
ozziii
Paul
I have 1/8 scale RC nitro buggies, many people have electric versions that use LiPo batteries, both 1/10 & 1/8 scale, I've seen many pics & read a fair few stories about these batteries catching fire if not handled with a high degree of care. Seen pics of rc cars & real 1:1 cars being burnt out, houses, sheds etc burnt down that were caused by LiPo battery fires. Over charging, over dis-charging, to much heat etc can all cause LiPo packs to burst into flames. I won't use them in my rc cars, I use the LiFe battery packs, while still a lithium type battery they can take alot more "abuse" in the way of charging & discharging & can handle heat better.
I use 2s packs (2 cell) for the radio control hand piece & in the buggy for receiver & servo's & use a 4s LiFe pack for the starter box to start the nitro engines, the 4s pack has had a fair bit of abuse, had a very high rate of discharge & been pretty hot, its puffed up a small amount but still works, although power output has dropped, if it was a LiPo it would have caught fire by now.
I use 2s packs (2 cell) for the radio control hand piece & in the buggy for receiver & servo's & use a 4s LiFe pack for the starter box to start the nitro engines, the 4s pack has had a fair bit of abuse, had a very high rate of discharge & been pretty hot, its puffed up a small amount but still works, although power output has dropped, if it was a LiPo it would have caught fire by now.
mbasko said:It's not just smartphones either. I had a near miss tonight...
Whilst cooking some hot dogs for my daughter & I no less than 3 exploded in the saucepan. This could have been ugly if I stuck my face in it when they let go. :lol:
Chinese hotdogs mate, lol?
Thanks for your input. I purposely mentioned RC so one of you blokes who actually know the batteries can have your say. Don't know if my mate knows about LiFe and I hadn't heard of the iron based one till now either so cheers for that
I know he uses LiPi and at a guess..numbers I've seen on his batts are like 7000 & 40cc ..mabey 7volts? Quick little zippy stunt planes last about 5 - 10 mins
I know he uses LiPi and at a guess..numbers I've seen on his batts are like 7000 & 40cc ..mabey 7volts? Quick little zippy stunt planes last about 5 - 10 mins
Yeah the fire that these batteries can create if shorted or if water got into them, is scary and burns like magnesium, my dirt bike has
A lithium iron battery under the seat and I sometimes freak myself out wondering what I would do if it fire balled up on me lol
It's a chance we take I suppose, so if the sucker gets hot in your hand or pocket put it down far away from you I guess.
A lithium iron battery under the seat and I sometimes freak myself out wondering what I would do if it fire balled up on me lol
It's a chance we take I suppose, so if the sucker gets hot in your hand or pocket put it down far away from you I guess.
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Might be one or two non believers on this thread AR,.... but that's OK, we are all entitled to our five minutes(ha),... most of the people who get burn't don't know or think it can happen to them either,.... soo much to drink and it's only 7pm on a Monday night (hee hee). And I'm not meaning you either AR
And I'm not meaning you either AR
I saw the effect of a car battery exploding at a petrol station I was working at one day. Was smashing out the driveway with a 90lb jack hammer and I heard a big boom, I thought it was the compressor.... Was a lead acid battery in a Saab going boom, the bonnet didn't open but it was expaned and lifted in the centre by quite a few inches, bonnet looked quite rounded and stretched after the boom, with Sulphuric Acid vapour everywhere, was pretty nasty. Would have seriously hurt someone looking over it..
Wow..havnt heard of lead acid going off yet..scarey again if your the one in the situation :/
I had a scare the other day with the old 'servo spark at the gas feed' when my body hadn't discharged on metal after I slid off my seat in polyester shorts!! Right on the bowser tap as I was screwing it on 8) I told the servo attendant. He said: "Well if ya do catch on fire..don't come running in here!"
..I thought that would never happen to me.
I had a scare the other day with the old 'servo spark at the gas feed' when my body hadn't discharged on metal after I slid off my seat in polyester shorts!! Right on the bowser tap as I was screwing it on 8) I told the servo attendant. He said: "Well if ya do catch on fire..don't come running in here!"
..I thought that would never happen to me.
Yep they are blowing up. Heaps of articles on it online in the media. The lappy batteries were energetically combusting, rather than exploding. Looked a bit like when mythbusters used thermite. They were HP lappys. Bad batch of batteries.Parks said:
AtomRat said:Wow..havnt heard of lead acid going off yet..scarey again if your the one in the situation :/
I had a scare the other day with the old 'servo spark at the gas feed' when my body hadn't discharged on metal after I slid off my seat in polyester shorts!! Right on the bowser tap as I was screwing it on 8) I told the servo attendant. He said: "Well if ya do catch on fire..don't come running in here!"
..I thought that would never happen to me.
Yeah when I used work on servo's (pump, pipe and tank work mainly) we were not allowed to wear synthetic clothes on site. There has been fuel accidents where adults or a kid gets it on their polyester jumper and then pulls it off bursting into flames, bloody terrible thing to happen. So yep always a good idea to earth yourself before playing with fuel. Always use earth cables when transferring large amounts also with a pump.
You're meant to earth out onto the bowser pump trigger nozzle, the rubber hoses half thin cables running though them to make it possible from memory.
Chewy said:
Yeah I remember that too Chewy, the bad batch of batteries.
ozziii
Paul
AtomRat said:Thanks for your input. I purposely mentioned RC so one of you blokes who actually know the batteries can have your say. Don't know if my mate knows about LiFe and I hadn't heard of the iron based one till now either so cheers for that
I know he uses LiPi and at a guess..numbers I've seen on his batts are like 7000 & 40cc ..mabey 7volts? Quick little zippy stunt planes last about 5 - 10 mins
7000 would be the mAh rating, 40C would be the max discharge rate. I'm not sure how it all works but that 7ah, 40C pack would be a pretty high output battery.
Each Lipo cell is 3.7v, so a 4s pack for 1/8 buggy racing is 14.8v & give about 10-15 minutes of run time before reaching the minimum voltage, discharge any further & you risk cell damage or worse. 1/8 scale offroad electric races are 10 minutes long.
The LiFe packs don't put out as much power, only 3.3v per cell so they don't get used for rc racing.
Anyone charging a LiPo battery at RC car clubs & races have to use a fire safe LiPo charging bag for safety.
That sounds bout right with the numbers you've said yep.
I mainly started the topic thinking.."how many devices actually use these batteries now?".. obviously phones and then rc.. then I started thinking gps devices..ipads..etc and thinking well.. high enough temperature even in a car could possibly cause any of these batteries to expand to a shorting out position risking fire or explosion depending on the rate it burns, so figured..why not share it and discuss it for just adding another safety precaution to the list.
I mainly started the topic thinking.."how many devices actually use these batteries now?".. obviously phones and then rc.. then I started thinking gps devices..ipads..etc and thinking well.. high enough temperature even in a car could possibly cause any of these batteries to expand to a shorting out position risking fire or explosion depending on the rate it burns, so figured..why not share it and discuss it for just adding another safety precaution to the list.
ozziii
Paul
I've seen a couple of phone batteries that had swelled up a little, think one may have been my daughters, the battery had stuffed up some how, she replaced it but the old one was puffed out slightly, was a few years back, didn't know much about batteries then.
Mr. Volta would not be happy.
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