Large capacity lipo packs no longer?

[Steven Vaccaro]

I would like to start off this new section of the OSE forum by saying that I just purchased some Hyperion 35c 6500mah packs. When I ordered them Pat(rclipos) said there are new shipping regulations, which make the cost of importing high capacity cells extremely high. Which may cause the disappearance of this type of cell

[tth]

Thats a bummer......thanks for opening a battery topic area Steven!

[Steven Vaccaro]

Thats a bummer......thanks for opening a battery topic area Steven!

Hopefully someone will figure out a way around it.

No problem on opening this area. Its long over due.

[johnnyoverkill]

Steven,

I have read that there are ways about it when ordering in bulk from overseas. I'll dig around for the article and post it when it's found.

What I do remember about it was this; it was stated that oftentimes the mail-sized packages are shipped aboard regular passenger airlines in the cargo hold. The risk of fire was the potential issue. If combined with an aggressor, it becomes a bomb. Under 29 and 49 CFR hazmat for transportation, the airlines have pushed to remove it. Under controlled cargo conditions, the problem is lessened. Therefore, bulk only shipments.

Again, I'll dig around and post the article. It may be of some help each of us.

John

[johnnyoverkill]

Here's a better definition to the transportation issues:

http://www.nexergy.com/media/pdfs/TRANS_IATA_Guidance.pdf

John

[JimClark]

what is the cutoff on size?

[ozzie-crawl]

hmm wonder if airlines will start only half filling there fuel tanks to minimize the size of a fire in crashes,obviously some bureaucrats pushing paper to keep his job

[ozzie-crawl]

this is from a thread on RRR, not sure how accurate it is
20Wh per cell AND 100Wh per battery =
1S to 5S = 5400mAh
6S = 4500mAh
8S = 3370mAh
10S = 2700mAh
12S = 2250mAh

[BHChieftain]

There's always the cargo boats...

-Chief

[Diesel6401]

hmm wonder if airlines will start only half filling there fuel tanks to minimize the size of a fire in crashes,obviously some bureaucrats pushing paper to keep his job

They already do, not because of fire though. It's more cost effective (weight issue) to fly with only the necessary amount instead of full tank everytime. Sorry off topic, but I work for the airlines.

[ozzie-crawl]

i can understand there concern over lithium batteries in commercial air craft.
but i will give you one guess as to the batteries used in a Boeing 787 to power the on board computers etc

[ozzie-crawl]

They already do, not because of fire though. It's more cost effective (weight issue) to fly with only the necessary amount instead of full tank everytime. Sorry off topic, but I work for the airlines.

thats true every thing is worked out on weight but there has to be enough fuel to divert etc, was just pointing out the plane it self carries huge quantities of fuel

[Xzessperated]

thats true every thing is worked out on weight but there has to be enough fuel to divert etc, was just pointing out the plane it self carries huge quantities of fuel

I knew what you meant ozzie.
It is sure going to make me feel a whole lot better when my plane is screaming at a 1,000 kph in a vertical dive towards the mountain below to know that there is not a single large lipo on the plane.
To be serious, I for one, will probably leave the hobby if this law goes too far (don't start getting excited yet as I have a good supply of lipos). I have fun for an hour on a single 3s 1,300 mAh battery in my r/c electric glider. I enjoy my FE boats more at the moment, simply because of the speed. The prospects of doing 80 mph on a 3s, 1,300 mAh battery look slim to me.
Maybe smaller batteries will just be a new challenge for the younger guys on this and other forums.

[Diesel6401]

thats true every thing is worked out on weight but there has to be enough fuel to divert etc, was just pointing out the plane it self carries huge quantities of fuel

Yea they usually carry about 25ms or a little more of extra fuel. Theirs alot of other factors as well like weather, wind speed, baggage.. ect...

i can understand there concern over lithium batteries in commercial air craft.
but i will give you one guess as to the batteries used in a Boeing 787 to power the on board computers etc

This is actually a big deal. I've been an aircraft mechanic going on 8 years and this is the only plane I know of in commerical aviation to use lithium batteries as their main supply. Ni-Cad has been the industry standard and now a jump to Li-ion very interesting. This plane (787) is really breaking down/opening new doors into commerical aviation. Commerical is usually 5-10 years behind military aircraft due to FAA regs, so this is another advancement which is a long time overdue. Theirs also special conditions added to only this plane for this reason http://rgl.faa.gov/Regulatory_and_Gu...pandSection=-4.

Li-ion is really taking or has taken over as standard in mostly everything these days from cell phones to cameras to drills ect, but yet their sooooooo dangerous and we need to stop using them..... LAME!!!!

[ozzie-crawl]

this is just a u.s.a issue at the moment is it not ?
have not heard Australia following the same laws ?
its been awhile since i looked at them so not sure how there discharge rates compare to li-po but i am fairly sure lithium magnesium is not as volatile as li-po and wont self ignite