Ebike battery fire

Cadence

Esteemed Pedelecer
Feb 23, 2023
273
204
Agree with all of the above. I have a 2008 BMW 3 series - nice car and well made. However, like a lot of cars it is festooned with sensors that give a warning of impending doom on the dashboard. The BMW "stealer" wants to charge an arm and a leg to diagnose, while the dim receptionist offers a coffee and croussant.
Fortunately I can use an excellent independent who has all the necessary kit and will plug it in FOC. He even lets me buy my own parts for him to fit. OEM parts bought from the dealer are usually packaged with "Made in China" on, or some Eastern European country - infact anywhere except Germany! This is the brave New World of globalisation and we are all being hoodwinked.
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
20,917
8,533
61
West Sx RH
With these fires we have little or no idea what has occurred.
Diy incompetent builds cutting corners with batteries , wrong chargers or to much current, over charging etc,etc.
 

Az.

Esteemed Pedelecer
Apr 27, 2022
2,044
903
Plymouth
IMHO that's long enough to fling the charging battery out of an open window, if the battery was situated on a skateboard and in a box, on a long plank hinged near the window pane. Wheeled and boxed, in case it gets melty; prevents battery case plastic sticking to the ramp en route to the water butt outside.
Funny thing is one never knows if Guerney is joking or serious...
 
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WheezyRider

Esteemed Pedelecer
Apr 20, 2020
1,690
938
The one doing the rounds on the BBC now is interesting. Looks like a bag battery on the bike, but that is not the one that burns, that is hidden behind a box and is out of shot. Plus you can clearly see the rider has a massive hub motor, probably 1000W. So maybe the owner was flouting the rules on charging too? In the beginning you can see a big blue insulated box type rucksack - so probably food delivery riders.

I wonder if what has happened is that there are two bikes, one running 48V 1000W+ and one relatively standard 36V bike... Then someone has tried to charge the standard bike with the charger from the souped up bike?

 
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Nealh

Esteemed Pedelecer
Aug 7, 2014
20,917
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West Sx RH
These food delivery guys are just chancers with no knowledge , one just has to see the chances they take on the highways (inc the pavements) . They don't have clue or care as long as they get there delivery done and earn the money.
One suspects most of their diy jobs are done by word of mouth or thru facetube or something where they have an online club of how to go electric.
It wouldn't surprise me that they are using higher current fast chargers which the batteries aren't capable of handling.

Problem is they will give a bad rep for all EAPC riders wth safe bikes and procedures, media reporting as we know is terrible and they just sensationalise stories for just that a knee jerk story and reaction to scare people.

One thing we never here off is the full and real facts of how and why these incicdents/fires occurr in the hands of dimwits who have a habit of causing them.
No knowledge amongst these dimwits is very dangerous .
 

guerney

Esteemed Pedelecer
Sep 7, 2021
11,382
3,234
With these fires we have little or no idea what has occurred.
Diy incompetent builds cutting corners with batteries , wrong chargers or to much current, over charging etc,etc.
One thing we never here off is the full and real facts of how and why these incicdents/fires occurr in the hands of dimwits who have a habit of causing them.
Videos are more shocking and "Newsworthy" than detailed analysis, compiled days or weeks later. We'd never see those, if they exist.
 

guerney

Esteemed Pedelecer
Sep 7, 2021
11,382
3,234
Clearly, ebike batteries bursting into flames and ruining the mood is highly undesirable for many... therefore I propose this simple solution: A not quite vertical plank holds the charging battery in a open topped box on the windowsill, next to an open window. The plank is hinged at point B. The battery is prevented from falling out of the the window by a chain (navy blue) secured by a bolt at point A. When the temperature of the charging battery's exterior reaches 40 degrees centigrade, a siren is activated, a solenoid releases the chain, the plank tips over and the battery falls out of the open window. Simples. You should all make one immediately.


52862



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AndyBike

Esteemed Pedelecer
Nov 8, 2020
1,390
591
So you've been totally taken in by the German engineering myth? I'm not saying German engineering is terrible
Well, yes you are, its in the first part of this sentence.

Silly you.

Actually I buy all my stuff online, I dont visit bike shops with only 2 exceptions, A. bike mechanic(not a shop,only a repair place) who lets me borrow his tools cos he knows I'm able to do 99% of these things for myself. and B. a wheelbuilder, whom ive known for decades and is one of the best in my country.

As to myth....
My chop saw.
105629_xl.jpg

Your chop saw
43bfa0896b.jpg
 

AndyBike

Esteemed Pedelecer
Nov 8, 2020
1,390
591
Funny you should say that Stuart, but I do use what is a woodworking tool to cut hydraulic hose squarely.
Due to the nature of them they need cut pretty accurately, and trying to snip one off with cable cutters always leaves a ragged or not true 90 degree cut.

So I drill a 5mm hole(for 5mm hose) into a piece of timber then use a manual mitre trimmer to slice a fraction off the timber,which also cuts the hose leaving a super clean and absolute accurate 90deg cut end.
 

WheezyRider

Esteemed Pedelecer
Apr 20, 2020
1,690
938
Well, yes you are, its in the first part of this sentence.

Silly you.

Actually I buy all my stuff online, I dont visit bike shops with only 2 exceptions, A. bike mechanic(not a shop,only a repair place) who lets me borrow his tools cos he knows I'm able to do 99% of these things for myself. and B. a wheelbuilder, whom ive known for decades and is one of the best in my country.

As to myth....
My chop saw.
View attachment 52863

Your chop saw
View attachment 52864

Oh dear, I wish you could understand nuance. I am NOT saying German engineering is terrible, my point is that you can't say it is the be all and end all and it is certainly not as good as it was decades ago, when it really was something. Yet, there is still this myth that the gullible are all too ready to believe that just because something has "German engineering" written on the side that it will be the best of the best.

As for Fesstool, wouldn't buy them, just look at the reviews:

 

AndyBike

Esteemed Pedelecer
Nov 8, 2020
1,390
591
WOW, you'll say anything.
 

AndyBike

Esteemed Pedelecer
Nov 8, 2020
1,390
591
They say arguing with an idiot makes two of them so, I’ll just leave you alone on this one.

;)
 

AndyBike

Esteemed Pedelecer
Nov 8, 2020
1,390
591
Fine, I'm happy to leave it to others here to make their mind up about who is the idiot :D
Good idea. It is often said that idiots live in blissful ignorance ....
;)
 

WheezyRider

Esteemed Pedelecer
Apr 20, 2020
1,690
938
Good idea. It is often said that idiots live in blissful ignorance ....
;)
Fine, I'll leave you to your bliss. When you have grown up a bit and can come back with a coherent point and not just resort to lame insults, let me know.