The Australian Transportation Safety Bureau published its report in relation to a cargo hold smoke event involving a Boeing 737. http://www.atsb.gov.au/publications/investigation_reports/2014/aair/ao-2014-082.aspx
The smoke was detected by the airline Captain during the external inspection on the tarmac during preflights. The source of the smoke was later identified as being some LiPO batteries for a UAV. The passenger failed to declared the LiPOs when asked at check in. The ATSB revealed that the passenger was an Australian certified UAV operator.
Australian civil aviation safety regulations permit LiPO batteries to be transported as CARRY ON as long as they are <100WH and are packaged to prevent short circuits. http://www.casa.gov.au/wcmswr/_assets/main/dg/luggage/brochure.pdf
I frequently travel on aircraft with LiPO batteries, and before I travel all the terminals and balance leads are taped with electrical tape. They are stored in LiPO safe bags, and then transported in a pelican case as carry on.
It makes sense to take every precaution because I'd rather not be on a plane that crashes because of a LiPO fire.
Comments
A friend and I have decommissioned a few lipo's using various methods (axes, hammers, guns) and charge states. This was not scientific or even documented, but there did seem to be a relationship between the amount of charge and the amount of fire. I think some of the video's are over dramatized. In general the the fires are pretty slow and not very energetic. Although I guess an over-charged condition is more dangerous. So I would travel with a reduced charge, like a storage charge.
Badman said:
"At the least, if something were to go wrong I could stand up in front of a coroner and show the care we took to make sure we were operating at the best of our ability."
I don't think a coroner has ever seen anyone do that before.... are you sure?
The difference between cheap and expensive will be quality control.
With the cheap batteries, everything they make goes in a box out to the customer with minimal testing.
You take your chances that at some point you will get a dud, but if you get a good one it is likely to be exactly the same as an expensive battery.
With expensive batteries, there is far more testing and quality control to ensure that every battery goes out the door with the specs stated and is up to scratch. With expensive batteries, you are also paying for the ones they have to throw out.
You have two choices, you can buy cheap batteries knowing that at some point you will probably get a dud with a short life but in most cases it will probably be just as good as the expensive brand OR you can always buy expensive batteries knowing that every single one will be perfect.
It then becomes cost vs benefit. If you are a professional with $3k of kit in the air, it is probably a reasonably low risk to fly cheap batteries and keep your costs down. You can afford more cheap batteries so you have plenty spare for lots of flights.
If you are a professional with a cinema grade $30k camera strapped on $10k worth of quad, then expensive batteries only make up a small percentage of your total costs and you would have fewer expensive batteries knowing you will never burn all that money due to a faulty battery.
Using cheap batteries does not make you unprofessional.
OG, I would be interested to see whatever evidence you have. But a few poorly written lines with no supporting material on a blog, from an anonymous person, just don't cut it with me.
This incident, and Hai's comments strike a nerve with me, as I had a bad situation with airlines and LiPo's two years ago.
While on my way out to Colorado, for AVC 2013, I was bringing a significant amount of batteries for my helicopters. 4 4S 5000's, and some number of smaller batteries. I taped up the terminals securely, put then in fire-proof bags, and then a Pelican case.
When security looked at this, they went into full freak-out mode. I was passed along a succession of people, none of whom understood the regulations, or wanted to take responsibility for allowing me to board after demonstrating that I complied with the regulation. Basically, after informing them that I did meet regulations, they passed me on to another person who started questioning what I was doing over again from the beginning.
And by the way, the typical regulation is that you are allowed to carry an unlimited number of batteries, where each battery is less than 100 Wh. And then you are allowed 2 which are between 100-160 Wh, and none that are over 160 Wh.
Now, there's a bit of an issue with the definition of Wh. How is it defined? The Ah is easy for us. But what voltage do you use? I assume 4V/cell nominal, but I think industry assumes 3.7V (I don't know why, the battery is almost depleted by that point...) Anyway, at 3.7V/cell, my 4S5000 is only 74 Wh. So I should not have had a problem.
However, the final person I met with, asked me to prove how many Wh the batteries were. Unfortunately, this is not labelled on hobby batteries. I informed her that it can be determined by a simple calculation, where Wh = V x Ah.
She accused me of lying. As I was about to miss my flight, I left all the batteries behind. My trip was all but ruined.
This past year, I boarded a plane with the exact same number of batteries. I taped up the terminals, but I merely threw them in an innocuous looking lunch bag. No Pelican, no fireproof bag. I zipped right through security in both directions with nary a concern.
Actually, in Denver airport on the way back, there was this new TSA security check thing where, some passengers randomly get sent through this other line. I was selected for it. I was expecting a full body cavity search. Turns out, it was actually a "fast" line, where they don't require you to take off your shoes, or take your laptop out of the bag or anything. They Xrayed my lunch bag, and despite seeing a bunch of bricks of semi-soft material with wires sticking out, they didn't question me or even open the bag.
I was a little concerned by that frankly.
When a passenger boards a plane with something like this, I think they SHOULD be questioned, and the items inspected. At the least, they should be making sure the terminals are taped up. They should understand the regulations, how to determine battery capacity, and should not penalize passengers by taking extra precautions of putting them in a fire-proof bag and/or Pelican case.
Shawn, I've never seen any evidence, either impartially scientifically conducted or otherwise, that would indicate that expensive batteries are any different or better than cheap batteries. The only thing I've ever seen was probably placebo effect or confirmation bias from users trying to justify their purchase of the latest, shiniest battery.
In fact, when I see professional operators using low cost but quality hardware, I actually give them credit for being more thoughtful and actually understanding how these things work.
More knowledge, less chequebook.
The idiot was carrying 25+ LiPO batteries as check-in and made a false declaration during check-in, throw the book at the operator.
Either declare batteries as carry on (with terminals isolated, in burn bags, and work around the differing country/carrier LiPO limits) or deliver them to end destination via courier/supplier.
Hans H they are say the limit per person is 100Wh which is 50 cell phone batteries if you are using a 2000mAh average. I could see a pro-UAV operator having more than 10 10000mAh batteries. You can get them sent on aircraft that do not carry passengers ie. couriers, but they need to be properly labeled from what I have seen. Even HobbyKing is restricted this way.
Wonder how they cope with the 100Wh limit on a verification?
All mobile phone batteries are currently's LiPo and on 1200 - 2000mAh. Digital cameras and GPS:s and music players have the same amount. Tablet has 3-5 times more. Laptops doublet up against tablets. Passengers traveling far may have extra batteries or "power banks".
So each passenger can easily have between 4 - 50 Wh LiPo batteries in various electronic things.
Commercial aircraft must not have more than 2 to 10 passengers?
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