Sweden bans latest batch of IB4200
 

Sweden has now banned the latest batch of IB cells due to exploding cells. The batch has the marking AZCWT. At the same time EP4200, EP4600 and the new orion cells are now allowed for racing in sweden.

so does Belgium.

Well, if the argument has moved on from...

"Exploding NIMH are going to kill us all"

...to...

"Specific batches of IB4200 are unsafe, everything else is approved for use"

...then this can only be a GOOD THING.

The batteries that blew up in Norway, are not from this batch, so I don't see the point.
Norwegian federation are having a meeting this weekend, with drivers and persons from the clubs, more info regarding this should be out Monday.

Well.... this means that we dont have to participate to Eskilstuna race...shame!

why not?
they only banned the latest batch off cells you can stil use the
old IB 4200

they should stop letting retarded chinese gyspsies making them in there smoggy factories, i saw in a documentary that 1 in 5 things from china dont work properly, coz some lazy guy in china cba doing this correct (probably coz of his salary) so i wouldnt be surprised, im more worried about the chinese made li-po's. they dont call em chinese specials for nothing!!:eh?:

Immediately followed by £100 per pack if not more :o

I think you will find chinese workers are very hard working despite their poor salary and often poor work condions.

The reason the market is flooded lower quality products from China is because of the low prices that "We" (the western consumer) demand.

GP cells pushed Sanyo out of the market because of price/performance, now IB have pushed GP out. But to get the price down and the cell capacity up corners will be cut and quality issues ignored.

RC is the same as all markets; clothes, electrical goods, etc... We demand lower and lower prices on the high street so companies make cheap rubbish in China to satisfy our wallets. Then we complain when they pollute the world with smoggy factorys. Very little of what the chinese make is for the domestic market, mostly for export to Europe and US. So all the smog, pollution, junk and other problems the chinese make our essentally the fault of the western consumer.

We should remember how relatively cheap these products are.... I believe you can get matched EP's for £35 a pack... 15 years ago £35 would only get you sport packs, anything matched would be £45+ or so.

If that's a flame post, OK, but if it's what you think...

Like Dan says, if we didn't buy cheap Chinese products, then they wouldn't have a market to sell into. Similarly, those 1 in 5 (if that's true) poor products are made for Western companies who specify what they want, and then fail to check the quality of what is delivered.

That is no different to the West - the British car, motorcycle, HiFi, and camera industries went bust because they made poor products. It isn't something exclusive to the Chinese.

There is no evidence that this is solely manufacturing fault. There is a lot of evidence that the industry (from matchers through to users) does things to these cells that are not what the manufacturer recommends, and/or may contribute to the problem. Problem is, we don't know what!

I'd like to know what it was that leads the Swedish Association to ban just this batch...

I'm sorry B4RS, but thats verging on racism.

Agreed, that's way over the top man.

When it comes to buying sheap stuff!
You get what you pay for!

B4RS

After you've had a few pints down the pub with your mates, some of your stuff might be found funny (like your jokes). Remember though, a public forum is open to everyone on the planet and sometimes somethings are just best not posted.

I don't think he's old enought to drink Vader, so was probably smacked off of his tits on crack or summat....... :eh?:

G

I'm getting nostalgic about my Sanyo cells. you could abuse the hell out of them and they never went "POP".

I would seriously step back and think before you post. If you can't do that, don't post! :mad:

No problem with the Chinese or Chinese made goods, Jordan races and is 14 years old, all of this toys and most of his clothing in this time have been made in China, and well made in China is what I always thought. Most of the goods have an "american" quality about them.

My feeling is that the Chinese work hard, are inteligent and are as honest as the next business man. Some of the factories have working conditions that may have existed over here 100 years ago, but these are improving, our batteries cannot stay as cheap if conditions change, and change they must. But expect more and more goods to come from this country.

rant over...........

Hmmm !
 

More than likely in the next ten years you will be working for a company in GB thats owned by a chinese company ! China has the fortune of having its economic boom start in a modern era when they can easily plan its infrastucture using modern technology etc etc !
Remember our economic boom in a world prespective happened in the 1800 's when we had Mills in Hudderfield worked in by numpties ! using canals and waterways etc etc etc.
China has airports ! Power stations brand new motorways and willing workforces to resource on.
Japans rise is an example. Perhaps if we had not reduced all there cites to rubble it might had been a different story. But in the last 50 years they have had time to rebuild ! Do things right ! proper infrastructer etc etc. Were here in England ?? Well most cities are old streets and highways and roads cannot cope ! We are slowly choking. UK,USA,France etc are all worried about China's growth "Enviromental reasons!!"" I think they can see the future and China's is looking like it might be better than ours !!!

Just one of my thoughts !!

nothing but the ill-informed, adolescent racist mind would type something like that. If that really is your opinion, you should be ashamed of yourself.

Take the criticism of your post on this forum for what it is:- constructive. Learn from your mistakes, learn about and understand the modern world and learn how to spell. Then come back and participate in this discussion with posts that are based on fact and not racism.

come on lets get back on topic, this may be out of turn, but the pc we have to put up with now is getting out of hand, we are alll entitled to opinions and we all have the freedom of speach, he has said what he felt, some may agree, some may not but lets just move on and not make a mountain of it.

lol northy funny as!

joking aside, im sorry but i dint intend it to come across as racist.

i just ment that the working conditions they are in arent good enough and i wouldnt be suprised if they didnt bother making cells properly coz i wouldnt either.

Once again im sorry:(

p.s burgi, keep your comments to your self, theres no need in you to start avin a go aswell i realise i was in the wrong when i posted and my comment was sort of taken the wrong way but can fully understand how. i can spell but have u eva heard of TXT speach??? and i type pretty fast so sometimes i miss characters, which many people do.... im expected an A in english language so i doubt i cant spell tbh.

Anyway, sounds like a pretty bad thing if batteries are going to explode and u guys in sweden and belgium cant use em'

the old people on this forum dont take kindley to txt speak

I use predictive text, it knows full words. :p

you know mate, prejudice is just as bad as racism.

I think what b4rs said was a very harsh thing to write, but
Im 15, so im 'adolescent', and would never, EVER! be racist. to be honest, what you said actually offends me.

so dude, you shud 'practise what you preach' as they say. In other words, don't be so hipocritical.

rant over....

im not a racist though?

Or the ones getting old before their time (puts hand in the air).

I wonder what the circumstances behind these exploding cells is. I mean, if someone is running two classes and re-peaking at too high a rate with no thermal cut off then it is understandable that something will go pop. If they are just charging them 'properly' and they go then all the panic is a little more understandable.
It would be nice to know a little more about the whole story and the situations behind each incident.

Just catching up on some posts...

In the Industrial Revolution in this country we did exactly the same things. We took people off the land, put them in slums of back to back houses, paid them low wages, made them buy from company shops and work long, long hours. From this came the Tort Laws and the Trade Unions. If the Chinese have the advantage of modern technology, and learning from history, where do you think they got the history and the technology from?

China is the longest lasting Empire on Earth, going back thousands of years. In that time, the Greeks, Romans, Vikings, Persians, Russians and every other dynasty has complained to China about its human rights record. Our human rights record in India (Ghandi) and Mesopotamia is just as appaling. They've gone, the Chinese are still here...

Before slinging mud at the Chinese, think about our record, and wonder who developed this behaviour first...

No one has any right to sling unsupported accusations at anyone about their race, colour or creed, whatever they think - it's against the Law. It isn't a point of view, it's a prejudice.

But, back in the thread, has anyone any more information about the choice of this batch of cells? And, at the risk of appearing daft, where does one find a batch number on an IB cell? (Don't tell me, it's on the button I just (shouldn't have) soldered the bar onto!! :D)

some one on rcracehat (i think it was) had a pack go in thier car two laps into the race, sure debris hit someone but no injury

right, txt speech, it does not potray your exact intent on what you mean, and really, it maybe one or two key strokes to spell the whole word, so spell it. Coming from an engineering background, really gripes me seeing people abusing the english language.

Chinese cell factory, I would of thought that these places are just as good/bad as any other cell factory in the world, although a pic I have seen of an EP4200 blown it's cap off does appear to be a manufacturing fault, but in making that many cells, one or two will slip through, just like we get dud memory for the pc and faulty cars.

I think banning a certain batch of batteries, is a very short sighted view of what is going on, and how people are treeting these batteries, there are a lot of people thinking and doing charging at 10A in the short belief it will give them an extra nth a second a lap. either drivers got to start to take responsibility of their charging regime, or maybe clubs should take a pro-active role in controling these drivers.

Although I do think the governing bodies need to go to the manufacturers of the cells and maybe negotiate a better cell and more robust.

I wonder if controlled destruction testing is the way forward for homologation of cells?

I.e. deliberately blow up the cells to find out...

A. how easy or difficult it is to blow them up
B. how much energy is released when they blow

If these things become homologation critera maybe cell makers will have to work on inproved vent designs etc to make the cells safer.

there are so many cells made, doing selective destructive testing would be pointless, the change has got to come from the manufacturer....

Another one went at our club tonight.

Admittedly the guy was repeaking at 7A!

oh dear! its happening more and more often then. Hope no-one was hurt.

Do you know how old the cells were? Is there any chance they were from this batch that is being banned over in Scandinavia?

I'll be charging my cells at 1C from now on for sure.

I think you have to negate the problem by charging at the lowest rate you can get away with, I know you got to turn the cells around in a certain time, but if the time is to short, charge the day before and then just repeak on the race day.

but re-peaking is a definite no-no with these cells? Or does that only apply if you re-peak freshly charged cells?

Is there anything on the market that you can charge the packs inside, just as a safety measure? I know this would give me more peace of mind, even at home. If they do away with ib's, what would be the next best/safer thing?

none of the good cells are totally safe. I am sure just placing them in a tin or even a tupperware box would hinder an explosion.

Repeaking a just charged warm pack I think is asking for trouble, but one that has rested a day, no problems, I do that most times I race, just don't get the time in the day to charge, but the cell is always cold going on and only luke warm after.

you looking for something like this??
http://www.b-p-p.com/proddetail.php?prod=1_BB&cat=15