On endless sphere search for duct tape battery ignites,there are a couple of burnt offerings on there,could have been the way they had been mounted or something though.Hi,
Where is the proof that lifep04 catches fire? I thought these things have a safe chemistry?
Thanks
Which battery to go for?
- Thread starter Andy_82
- Start date
Powabyke
Looks as if there may be two separate companies.
This one in London:
https://www.ukdata.com/numbers/03784059.html which is in administration.
And this one, our friends in Bath:
https://www.ukdata.com/numbers/05915451.html which we hope is not.
Looks as if there may be two separate companies.
This one in London:
https://www.ukdata.com/numbers/03784059.html which is in administration.
And this one, our friends in Bath:
https://www.ukdata.com/numbers/05915451.html which we hope is not.
I'd say that is more to do with something shorting out and the pack doesn't have any fuseable links used in it's construction to prevent the connections going up in smoke. You get a great big lump of a battery with the BMS on the end of a cable and the whole lot is left bouncing around in an old tool box, not ideal
There's a lot of energy in a battery pack and it should be treated with a bit of respect and caution. I don't believe it's the actual cell material that is combusting.
I'm certain it's not. As I posted above, only the first form of lithium battery, that with cobalt cathodes, suffered from an intrinsic risk of internal cell fires, and then only when manufacturing standards fell below acceptability.
They haven't been used on e-bikes for a long time now, and today's manganese, compound and iron based cathode cells will not cause an internal fire, whether polymerised or not. Their chemistry is different from that on the cobalt type which made fire possible though chemical generation of sharp pointed metallic particles which pierced internal insulation, causing short circuits.
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People have said a fair bit about maximum number of charge cycles on here but not mentioned time decay. If a Polymer battery is expected to last a couple of years if it isn't used much then what is the shelf life of a LiFePO4 battery? If it's two years the difference in the number of charges is irrelevant for most people.
yes then it should last for the life of the bike, maybe something like a 10 years, who knows???
Lithium ion phosphate (LiFePO4) does not a have a shelf life problem, they should last ten years if lightly used.
It's believed that today's compound cathode lithium polymer batteries will be able to last much longer than the old liquid electrolyte types (commonly called li-ion), three or four years shelf life if occasionally charged and the number of charges unknown as yet but thought to be possibly 500 to 800 in average user conditions.
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It's believed that today's compound cathode lithium polymer batteries will be able to last much longer than the old liquid electrolyte types (commonly called li-ion), three or four years shelf life if occasionally charged and the number of charges unknown as yet but thought to be possibly 500 to 800 in average user conditions.
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LiFePO4 still going strong
My Yesa LiFePO4 is still going strong after 18 months and 400 cycles. Capacity has not dropped at all. I have been pulling 20A from it (2C) most of the time without issue.
I did have an issue with the charger fan, but it was fixed under warranty by Yesa, and yes, they are in China and still around to talk to via MSN.
My Yesa LiFePO4 is still going strong after 18 months and 400 cycles. Capacity has not dropped at all. I have been pulling 20A from it (2C) most of the time without issue.
I did have an issue with the charger fan, but it was fixed under warranty by Yesa, and yes, they are in China and still around to talk to via MSN.
I thought that LifePo4 was a safer chemistry ?
With regards to buying from China, Li Ping is a reliable seller and builds quality products (good battery packing, small efficient BMS). The parcel packaging is very good too.
Cheers, Dan
I have seen burnt overvolted controllers and faulty BMS, but no cell fires...
Li Ping's v2.5 BMS seems to be very reliable.
if you go through the history of both they appear to be linked, however the main one in SW England does seem to be still trading.
I would find it very surprising if Powabyke does not find a buyer, given that they are a well established brand with substantial awareness and popularity particularly amongst the older generation.
That said I do wonder if they have suffered from the "milk float" effect? about 23 years ago in high school I first became interested in environmental matters, and learned that many British milk float manufacturers went out of business because the vehicles were so reliable, and the only main replacement component was lead-acid batteries which were standardised and available from a variety of competing sources.
Even today I still see milk floats around which are as old as me, whilst it is rare to see petrol motor cars of such age unless they are preserved classics..
This is also why I suspect e-bike manufacturers do not want to standardise batteries, as planned replacement costs must be viewed by their investors as a substantial amount of future revenue!
They appear to be one and the same company though, since Bath were celebrating their first ten years recently and only the London location has accounts going back to 1999, Bath's listed accounts from 2006 only.
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does it really matter which one is which one and if there is a lnk between them. probably there is a link but who cares, I don't. I know there could be a different reasons for changing the name i.e liabilities and so on but as long as they offer a service to the customer we should not really care.
the problem is there has been absolutely no public comment from the directors or the administrators to the trade media about exactly what has happened, other than the bare minimum London Gazette announcement
Its only this forum where the news broke first. Consumers and investors demand much more transparency from businesses these days, understandable for items costing many hundreds of pounds.
that way damaging rumours start which can potentially affect the whole industry. With no official comment, the obvious worries are that if a company such as Powabyke can get into this state, what hope do newer entrants have?
It is sad but not unexpected powabyke have traded on old technology for many years,obviously they spent a lot of money trying to bring a competitive new product in the x byke,but it was not well recieved for some reason perhaps it had too short a range and no other battery options apart from another battery added,i noticed a few people were trying to sell used bikes that did not meet their needs at reasonable prices on this site without success, compare this to kalkhoff bikes which often sell with very little depreciation now that the new prices have risen.
It matters to many Powabyke owners if the company that's failed is the one they rely on for continuing service and spares.
Those owners care and I do on their behalf.
However, I can appreciate your annoyance at this matter being "off subject" in your thread, that seems to have occurred following a bracketed remark in one response.
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flecc you seem to be one of the main people on here, maybe you could get a quote from the administrator or a powayke representative and post it in a new thread
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