00:02 Debunking myths around E-Bike battery causing lift accident 01:48 Explanation of why AC can't be stored 03:32 Analysis of E-Bike Battery Lift Accident 05:39 Explanation of the elevator floor and the type of battery used. 07:34 The main reason for the lift accident could be overcharging of the e-bike battery at home. 09:48 Overcharging led to lift accident 12:01 Fatal injury in lift due to overcharging 13:54 Never overcharge an e-bike battery
Useless talk , 15 min wasted it can easily explained in 2-3 minutes. . . No effect of Atmospheric pressure just one thing is right that battery is overcharged and got heat up slowly
@@steamcheap829 hi . do you mean you leave your scooter plugged in to the electrical outlet at home for long periods of time? If you have fully charged the battery and *DISCONNECTED the power supply . Providing the battery has no abnormal high temperature after charging it should be okay. However you should not leave a lithium ion type battery at a fully charged state for too long ! After around 3-4 days at a fully charged state it will start to do a little damage to the battery cells . What it does is actually cause the ions to become a little lazy even at full charge .this is due to centre core build up. -chemical aging basically. (Prone to e bike and e scooter battery types -18650 or 21700 battery cells most common. Remember as Your battery chemically AGES it will start to get warmer when charging as it approaches the full charge state . These used batteries should be more closely monitored while charging and definitely don’t leave it unattended or plugged in when fully charged. The only thing you will do if you leave plugged in for extended periods after charging is complete is -DRY UP THE battery cells due to trickle charging that most cheap chargers allow . Bro don’t leave it on the charger for long periods. Be safe and respect the power the video shows a mishandle or damaged battery can have.
I play a lot with lithium ion battery. The main reason that make it burst when fully charged is it could be one or some of the battery cell already degraded or damage. I oftenly found some lithium ion cells like 18650 getting so hot when they almost fully charged, especially when they already old. It will get hot at the voltage around 4.1v while it will fully charged at 4.2v. So, when I test batteries and found out the one get hot, I immediately pull it out of the charger to prevent any hazard. Maybe ppl says it because of overcharging, well, I am slightly agree, but it not because of overcharging above it's standard voltage of 4.2v. It is overcharging because the cell fully charged voltage itself already going down caused by the internal damage. So many people don't know what they're carrying especially the consumer who know nothing about batteries and electronic. So please check and observe your batteries while charging. Monitor the temperature. If it getting hot while not fully charged yet, I say, pull out the charger or plug immediately.
1. He walks into the lift and presses what looks like the ground floor while the door is still closing. 2. He stands holding the battery waiting for the doors to close. 3. The instant the doors snap close, there is a large puff of smoke which gains his attention. 4. Hence, from a Mechanical standpoint I conclude the reaction is nothing to do with a change in the external atmospheric pressure due to the lift descending because it starts while he is on the same level. So, no change in height of battery or potential energy P=ρgh to kick off any reaction. That said, I would appreciate if an Electrical and Electronic Engineer who specialises in Batteries, explains the reasons why this battery exploded. Equations, calculations, temperature limits please. No guess work. I am happy to help with the Thermal Dynamics questions and calculations. There is a good reason why the undergraduate entry to study Engineering at Top Universities exceeds that of Medicine. The least we can do for this unfortunate chap and his family is understand and explain why this reaction occurred which should be the catalyst for laws and safety standards which prevents this from occurring in the future.
Our society has now banned carrying EV batteries in Lift, now i dont have any option to charge my EB bike Battery, i live in High Rise Building. I dont live in RURAL area, i live in Mumbai and as on today (Aug-2024) there is not a single EV charging station from Colaba to Dadar And these companies are selling EV with and without Removable batteries in large numbers, i dont have any option now to through my EV bike in Arabian Sea Infrastructure is not ready and sales is very high. Even if i try to sell it i may get less than 50% and it is only 8 months old. Its the future (EV is the Future) but not PRESENT
the battery was too big to be carried in the lift, it should be limited to small only batteries. As you can see in the video he was walking very fast, jostling the internal chemicals in the battery. Once the battery cooked off, it was all over. In the unedited video you can see the victim was burned to a crisp. They had to have a closed gasket funeral so to not traumatized his freinds. If only he had not overcharged his battery he would still be alive. Its best to carry the battery on the stairs.
Carrying batteries from Stairs is somewhat safe, but not in High Rise building, my society has banned carrying batteries in Lift and we live in High Rise, we dont have any charging station around 10km from my location
These types of batteries should be prohibited in enclosed vehicles just as certain things are on airplanes. No matter how safe they hopefully become in the future. I am surprised they apparently weren’t made with an overcharge protection feature…
If you look at the video he actually put the battery on the ground in front of the lift . Maybe it has already showed signs while being charged of overheating -over temperature or possibly venting and he tried to get it down stairs before it Did go boom ? Ground floor is where they discovered the tragedy ?
From the original Video he's concerned about something in the way he was looking at the battery. You can clearly see a liquid dripping from the battery on to the elevator floor.
I like your video but can please let me know if this situation happened because of overcharged and pressure, why it was done happened on his home only?
8:46 you are wrong...magnetic fields are indeed passing by very often these late day's from solar flare on the sun creating mini carrington events like the ...but yea it could be from overcharging
that has little(no) real effect when things are done correctly. When a straw breaks the camels back, it isn´t the straw that does it. it is the hundreds of kgs loaded before, when the camel is only good for a short trip with 150kg less.
@@boriskaragiannisWell, you are not wrong that with any big enough discharge, just about anything can be destroyed, but that kind of an outburst would have wrecked HAVOC outside before the man came in with the battery. We would have known from the news already, or perhaps we would be in the apocalypse already. We have been having these events all this time. Like, you are not wrong, you are not wrong, but overcharging a shielded battery with EM is a tall order. AS far as the video, the issues is that the battery was overheating, so it was definitely overburdened compared to the specifications, cooked from the Sun due to the heat and discharge when riding, or it even was faulty from the factory. Batteries are not made to be truly hot. A car can get hotter than what is needed to cook on it, and a battery is absolutely not meant to take such temperatures. Do not store your E bikes out in the Sun, guys. They can get over 60 degrees Centigrade. Batteries shut down around or something over 40 C, but electronics refusing to discharge, means nothing in the face of catastrophic "cook out" that is overheating them beyond the levels of safe to touch.
Sir, Apologies.. You are exceptionally boring..😮 You may be knowing the subject.. Perhaps... But don't know how to communicate. Please take communication lessons..
00:02 Debunking myths around E-Bike battery causing lift accident
01:48 Explanation of why AC can't be stored
03:32 Analysis of E-Bike Battery Lift Accident
05:39 Explanation of the elevator floor and the type of battery used.
07:34 The main reason for the lift accident could be overcharging of the e-bike battery at home.
09:48 Overcharging led to lift accident
12:01 Fatal injury in lift due to overcharging
13:54 Never overcharge an e-bike battery
Useless talk , 15 min wasted it can easily explained in 2-3 minutes. . . No effect of Atmospheric pressure just one thing is right that battery is overcharged and got heat up slowly
You can skip to the important part according to the details he gave.
Thermal runaway. I bet you he tried getting it down stairs before it really did go bang
How can you prevent this? I leave my escooter charged for long periods.
@@steamcheap829 hi . do you mean you leave your scooter plugged in to the electrical outlet at home for long periods of time?
If you have fully charged the battery and *DISCONNECTED the power supply .
Providing the battery has no abnormal high temperature after charging it should be okay.
However you should not leave a lithium ion type battery at a fully charged state for too long !
After around 3-4 days at a fully charged state it will start to do a little damage to the battery cells . What it does is actually cause the ions to become a little lazy even at full charge .this is due to centre core build up. -chemical aging basically. (Prone to e bike and e scooter battery types -18650 or 21700 battery cells most common.
Remember as Your battery chemically AGES it will start to get warmer when charging as it approaches the full charge state . These used batteries should be more closely monitored while charging and definitely don’t leave it unattended or plugged in when fully charged.
The only thing you will do if you leave plugged in for extended periods after charging is complete is -DRY UP THE battery cells due to trickle charging that most cheap chargers allow .
Bro don’t leave it on the charger for long periods. Be safe and respect the power the video shows a mishandle or damaged battery can have.
fk that green energy SCAM
I play a lot with lithium ion battery. The main reason that make it burst when fully charged is it could be one or some of the battery cell already degraded or damage. I oftenly found some lithium ion cells like 18650 getting so hot when they almost fully charged, especially when they already old. It will get hot at the voltage around 4.1v while it will fully charged at 4.2v. So, when I test batteries and found out the one get hot, I immediately pull it out of the charger to prevent any hazard. Maybe ppl says it because of overcharging, well, I am slightly agree, but it not because of overcharging above it's standard voltage of 4.2v. It is overcharging because the cell fully charged voltage itself already going down caused by the internal damage.
So many people don't know what they're carrying especially the consumer who know nothing about batteries and electronic.
So please check and observe your batteries while charging. Monitor the temperature. If it getting hot while not fully charged yet, I say, pull out the charger or plug immediately.
1. He walks into the lift and presses what looks like the ground floor while the door is still closing.
2. He stands holding the battery waiting for the doors to close.
3. The instant the doors snap close, there is a large puff of smoke which gains his attention.
4. Hence, from a Mechanical standpoint I conclude the reaction is nothing to do with a change in the external atmospheric pressure due to the lift descending because it starts while he is on the same level. So, no change in height of battery or potential energy P=ρgh to kick off any reaction.
That said, I would appreciate if an Electrical and Electronic Engineer who specialises in Batteries, explains the reasons why this battery exploded. Equations, calculations, temperature limits please. No guess work. I am happy to help with the Thermal Dynamics questions and calculations.
There is a good reason why the undergraduate entry to study Engineering at Top Universities exceeds that of Medicine. The least we can do for this unfortunate chap and his family is understand and explain why this reaction occurred which should be the catalyst for laws and safety standards which prevents this from occurring in the future.
If want want to know the answer at the end of this video, he blames Chinesium
Simple explanation...thermal runaway in battery.
😂 the trigger was the elevator button 😂 the elevator didn't even have chance to move 😂 bike batteries are good for you don't avoid them 😂
Our society has now banned carrying EV batteries in Lift, now i dont have any option to charge my EB bike Battery, i live in High Rise Building.
I dont live in RURAL area, i live in Mumbai and as on today (Aug-2024) there is not a single EV charging station from Colaba to Dadar
And these companies are selling EV with and without Removable batteries in large numbers, i dont have any option now to through my EV bike in Arabian Sea
Infrastructure is not ready and sales is very high.
Even if i try to sell it i may get less than 50% and it is only 8 months old.
Its the future (EV is the Future) but not PRESENT
Scary Chinese TEMU batteries
Must have? This is very serious and happens repeatedly in China because of their substandard products.
Oh get out of here. America has the same substandard products. They just have twice as many people. So incidences are bound to happen.
An expert on all things electrical, you are. Masterful explanation.
the battery was too big to be carried in the lift, it should be limited to small only batteries. As you can see in the video he was walking very fast, jostling the internal chemicals in the battery. Once the battery cooked off, it was all over.
In the unedited video you can see the victim was burned to a crisp. They had to have a closed gasket funeral so to not traumatized his freinds. If only he had not overcharged his battery he would still be alive. Its best to carry the battery on the stairs.
Carrying batteries from Stairs is somewhat safe, but not in High Rise building, my society has banned carrying batteries in Lift and we live in High Rise, we dont have any charging station around 10km from my location
These types of batteries should be prohibited in enclosed vehicles just as certain things are on airplanes. No matter how safe they hopefully become in the future.
I am surprised they apparently weren’t made with an overcharge protection feature…
Great points!
If you look at the video he actually put the battery on the ground in front of the lift .
Maybe it has already showed signs while being charged of overheating -over temperature or possibly venting and he tried to get it down stairs before it Did go boom ?
Ground floor is where they discovered the tragedy ?
They pushing batteries too far. He just took that off the charger too most likely going to use it. Best guess.
From the original Video he's concerned about something in the way he was looking at the battery. You can clearly see a liquid dripping from the battery on to the elevator floor.
Excellent content with fully covered aspects.
Many thanks and be happy.
07:57 “客梯” in chinese means elevators for humans, while "货梯" is elevator for payloads. There are often two or three "客梯" and one "货梯" in a building.
I like your video but can please let me know if this situation happened because of overcharged and pressure, why it was done happened on his home only?
My first thought was magnetic fields. Don't ever go into a hospital with a e battery!
Why smoke does not for this case?
A lib would say this is still worth it to save muh earth. Now he’s net zero
8:46 you are wrong...magnetic fields are indeed passing by very often these late day's from solar flare on the sun creating mini carrington events like the ...but yea it could be from overcharging
that has little(no) real effect when things are done correctly. When a straw breaks the camels back, it isn´t the straw that does it. it is the hundreds of kgs loaded before, when the camel is only good for a short trip with 150kg less.
@@japanesecar1501 NOT EVERY TIME...MAYBE IT'S TIME FOR YOU TO SEE WTF HAPPEN AT THE carrington EVENT...CAUSE ITS ABOUT TO HAPPEN AGAIN
@@boriskaragiannisWell, you are not wrong that with any big enough discharge, just about anything can be destroyed, but that kind of an outburst would have wrecked HAVOC outside before the man came in with the battery. We would have known from the news already, or perhaps we would be in the apocalypse already.
We have been having these events all this time.
Like, you are not wrong, you are not wrong, but overcharging a shielded battery with EM is a tall order.
AS far as the video, the issues is that the battery was overheating, so it was definitely overburdened compared to the specifications, cooked from the Sun due to the heat and discharge when riding, or it even was faulty from the factory.
Batteries are not made to be truly hot. A car can get hotter than what is needed to cook on it, and a battery is absolutely not meant to take such temperatures. Do not store your E bikes out in the Sun, guys. They can get over 60 degrees Centigrade. Batteries shut down around or something over 40 C, but electronics refusing to discharge, means nothing in the face of catastrophic "cook out" that is overheating them beyond the levels of safe to touch.
@@japanesecar1501 BUT I DID SAY I ALSO BELIEVE IT WAS FROM OVERCHARGE FFS...DID YOU NOT READ IT?
@@japanesecar1501 "..but yea it could be from overcharging"
Huh🤨
TL;DW: chinese tofu battery.
lift me bhi to power backup inbuilt hota hai, wo kyun nahi fat jata
That's a perfect question, even your home also has one (˘inverter, battery set), but they are all are Lead-Acid batteries not Li-ion.
G force is reason for accident
In this wideo? haha
9.0
mobile aur laptop kyun nahi fat jate, bewakoof mat banao
Hahhahaha Bewakoof, all the best. 😂
Sir, Apologies.. You are exceptionally boring..😮 You may be knowing the subject.. Perhaps... But don't know how to communicate. Please take communication lessons..
your attention span issues.
FARAN AKHTAR