Shorting out a fully charged cheap lithium jump starter. (It didn't end well.)
ฝัง
- เผยแพร่เมื่อ 24 พ.ค. 2017
- I was given this defective lithium jump starter by a local chap called Andy for analysis. Then I decided to REALLY test it.
I also had an incident at my bench while the camera was off where the negative plates of an opened cell spontaneously erupted in flames and smoke. They may have been made more reactive by the high electron charge they had, or it was just a reaction with the air. There's very little actual lithium in these cells, just a coating of lithium metal oxide.
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By the way, in my experience: if it had become hot, plastic gloves are worse than nothing. They melt, hold large amounts of heat and stick to your hands.
I can confirm It used to happen all the time in labs
I'm guessing Clive didn't want electrolytes and oxide on his fingers.
It's to help with acid exhaust and spillage, not heat. Good point otherwise though - is there an acid/spill protection that does help with heat too?
@@dascandy Just put the chemical resistant gloves around the heat resistant gloves, not a lot of situations where you'd need protection from both at the same time anyway tho... This isn't a good idea with any type of glove...
That's why I quit a kitchen job.
Using plastic gloves for cooking, ridiculous.
Playing with lithium batteries: for when playing with fire just isn't exciting enough anymore...
step up to spitting kerosene into a flaming torch with the real nutters :P
@@mycosys Using starting fluid and a Bic lighter to kill flying insects indoors.
@@scootergeorge9576 hey, i killed a fly with a bic lighter before. Used way less flames than i wanted to though.
Boys will be boys, and men will be men.
Also, Scots with huge beards will short out lithium batteries on camera - because the world needs a hero.
I love working with lithium batteries. Ooh and like shorting them out!
13:01 "And I can smell that characteristic smell of sad lithium packs." XD
This is genius. The engineers that designed it made both the pack in the leads, and the battery to fail safely in case of an overload. All without adding additional expensive components. This is state of the art engineering at it's finest!
I'm not convinced that it was actually engineered that way, more like it just turned out slightly less dangerous in the end.
yes just a consequence of him having the cover off the unit.
@@ronblack7870 That cover would have split right open and removed itself post haste once the cells started expanding like that. Removing it had no effect on the overall outcome. Had the case been sealed properly and not popped open so easily with such minor force, then we could have a talk about how forcing it to fight against the container and thus increasing the voltage at the same time. Guessing the plastic cover was designed to pop open like that to prevent this occurrence. When the thing splits in your hand, the first thing most users would do is drop it. Thus helping to prevent injury.
You forgot the primary instruction"Don't try this at home". The insight to this shows the potential of Lithium in the fact that such a small batter can crank an ICE. Now the question is how can it be recycled.
"What could possibly go wrong?"
"What's the worst that could happen?"
"I probably shouldn't do this"
Big like for Big Clive :)
"I'm not sure why I do this"
Yes, he knows why he does this, because we like to watch him do stuff most of us have enough sense not to try on our own! (And he DOES know what he's doing).
Or in the one video where his bench went completely up in flames: "This isnt necessarily quite good"
Chuckiele do you remember which video? I'd love to see that 😂👌
wisico640 As would I!
I suppose you can see it here: th-cam.com/video/tBg4ximDrsk/w-d-xo.html
I think this is the one that Chuckiele is referring to.
It should make people be aware about opening up batteries. Those are NiMh. And the last one has gone bad into spontaneous combustion in contact with air.
Hmm... He was prepared as always, but surprised also ;-)
Those tiny bits of material that can't be seen, were making fire all over the place.
19:40 "A few amps is still actually quite a lot of amps"
This is why we love you Clive
amps are giants
Extremely educated. Taking calculated risk. Based on educated knowledge of electrical pathways and circuits. Not foolish or dangerous. Just glad a TV screen separates us. I know this is an old one. But it was great. Hadn’t seen it yet. Thank you. Keep up the great work.
“YoUlL Get CaNceR!”
My favorite line.
Thanks big Clive !
10:18 "and I've made a special test load, a test load that looks suspiciously like a bit of 15mm copper pipe" hahah
Shhhh. tester was in very good concition xD
"a few amps is still quite a lot of amps"
Is anyone collecting those lines of his yet?
SandyStarchild your avatar sums up my reaction when he said it pretty accurately
SandyStarchild I read this comment as he said it kind of like subtitles
to kill you, it only takes 1/2 amps to stop your heart
George Sarcasm God it takes mutch less than that 38ma can do a lot of damege but it also depends on the voltage
I know this is an older video now, but something worth mentioning is that these packs in use will see a direct short momentarily when being used to jump start a vehicle. As with any brushed motor, when power is first applied and the motor is not yet spinning, the power is directly shorted to ground through the motor windings. Mind you, this only happens for a very brief moment, a fraction of a second, but during normal operation with a properly charged battery, it is normal to see a current spike of 800-1000A when the starter solenoid contacts close and power is applied to the starter motor. Its only very briefly, but its something that is hard for these jump starters to overcome, especially on modern cars. If the system voltage drops too much during that initial spike and the starter solenoid can't hold the contacts closed, the engine won't crank (that's where you get that characteristic dead battery rattle when you turn the key, its the solenoid rattling back and forth because there isn't enough energy to hold the solenoid contacts closed once it tries to pass current through the starter motor). On vehicles where the starter is controlled by a computer through a relay (which is just about everything now), if that initial current spike drops system voltage enough to interrupt the operation of the computer or the relay that control the starter solenoid, the engine won't crank either. You'll just get one click as the solenoid closes, sends power to the starter motor and then everything stops when the starter relay or the computer controlling it gets interrupted. In general, these little lithium jump starters are only good for assisting slightly discharged batteries on vehicles with smaller engines. They won't make up for a completely discharged battery or work well on something with a large engine, because they won't be able to overcome that huge initial current spike.
Used 3s 12v batteries on there own a good few times no bother
Clive: "which is probably a terrible idea... but that's what we do"
me: "and that's why I'm here"
Explosion containment pie dish is my favourite character
😂😂😂😂😂
It's a a great plot device. We all feel safer when it is present.
Haahahahahahahahahahah
When Clive writes "it didn't end well" into the video title you know this is going to be an awesome video
EpicLPer ikr
oh hey, it's the barnacules server guy
Hierophant yep
Yes thats right it's allways so ^^
PS: Höhö xD denn habe ich auf Twitter gesehen
That's when you know it's going to end well :D
I love that you open things up and let us all see how they work. You do things that we all want to do but never actually do.
Mainly because most of us actually have an intact instinct for self preservation.
@@ExEBoss Someone's gotta do it. Uq-Uq the caveman died so we can know what berries are poisonous. Big Clive deals with electronics (that are potentially flammable/explosive) so we know what we're dealing with.
my mom always said to not open batteries but one day at school we found some half broken so we peeled it open and nothing exploded. since then i have a burning desire to tear into every device i have that is obsolete and throw all the lithium cells on flammable material
I don’t get scared much by electronics but holy shit this guy is like a roller coaster. And that lithium batteries are introduced with high electricity amazingly awesome
I'm glad that our good friend the brown benchtop could be there with us and the explosive containment pan during another exciting episode of tearing apart lithium batteries! 😀
bdot02 pie dish. Not a pan ;)
correcting people over the internet.......... PRICELESS
So true...if the brown benchtop ever gets replaced it will be a sad day for all of us.
He should just auction the benchtop off after a while. Wouldn't that be cool on the wall of the lab!
bdot02 like ashens & his dirty brown sofa
I'm happy so many RC enthusiasts have chimed in about these jumper packs, because I was thinking, "wow, the manufacturer of these is thinking you're going to jump-start a car engine with that?" I hadn't even considered small-engine starters, so thank you all for that input. :)
That connector looks very similar to the spektrum ec5 connector lol
@@johncarlberg4481it does. I've only seen them orange, though
you can definitely jump start some cars with this. source: i've had this exact jumper pack and used it like one hunded times with my crappy 90s opel corsa :)
But you can start cars with a 12v lipo as I've started a good few...tho got funny looks wen I got a pack out. They was like no way that's gonna start a car, I'm like yeah this battery will pull 300 400 Watts an can put out 20 30 amps depending on c ratings it will have no problems starting a poxy engine.
I've used one to jump my car several times! You only really need a few seconds of power to start an engine.
This takes me back to the big "AT&T - Avestor Battery" debacle of 2006-2007. AT&T, has, tens of thousands of remote equipment locations needing a battery backup solution to prevent service disruptions during short term commercial power "disconnections" , or local rectifier system failure, until a tech ( like me) could be dispatched to troubleshoot & resolve the issue.
They turned to a Canadian company named "Avestor" , which, created a stand alone 48V - 80AH "jar" ,which was very compact compared to prior technologies, and capable of being paralleled to increase the local AH capacity and run time at a site ( most sites were designed & maintained for at least 8 Hours of reserve battery capacity) Well, not soon after AT&T put a lot of eggs into Avestor's basket, Avestor decided to fold up, and declare bankruptcy. Then, not long after that, AT&T was having issues with some outdoor equipment cabinets suffering spontaneous combustion events , the first 2 noteable ones were in Texas, for brand new equipment installs. The company, in its infinite wisdom, tried to pin the blame on the local tech's that installed them (was a coincidence that both sites fell under one crews area) Then..... other sites across the country started to join in on the fun, 2 more newsworthy ones were in Wisconsin in the cold of winter. eepower.com/news/att-begins-battery-replacement-program-after-reports-of-fires/# A large campaign then ensued, to replace the combusting Avestor products with "proven" Lead-Acid technology, BUT, recouping any financial losses from Avesteor was not in the cards. I always try to store these types of batteries in a cool, dry, area, and keep my fingers crossed.
i have had a bunch of lipo's for rc aircrafts in my bedroom for over 10 years charged at 3.8v per cell. still no fire
It would be interesting to see what would happen when a sealed unit is shorted out. I wonder if the plastic case would hold the cells together long enough for a fire! Time for another test in the name of science!
I was wondering the same thing
All of us RC car guys are shaking our heads at people buying these. The most worrying thing about these is that people will leave these fully charged in their cars for emergency situations. Yeah let's leave a fully charged 3s lipo locked in our cars throughout the summer
Yep, there is a good reason RC enthusiasts keep their lipos in ammo boxes and other non-flammable containers...
I like to think that the more expensive, branded versions of these have higher quality cells and better protection than this particular unit...
+Andrew Gillard it doesn't matter much - it is still a high capacity, high discharge lipo cell battery you got there. I've seen a $200 lipo pack burst in flames in the back seat of a car. No way would I leave this unattended.
Indeed
This is why dash cams shouldnt use LiPo's either, and modding them to use capacitors is the most common mod. The chance that they will explode in a reasonable amount of time (few years) is low, but if it does, it can destroy your entire car. Im honestly surprised these car chargers arent sold with some thick insulation that will neutralize the battery if things go wrong.
So if you'd clamped the battery in a vice (to keep the plates from separating) for the short circuit test it might have been a lot more exciting?
alhazan vice shrapnel lol.
Following the TH-cam tradition - the more carnage / flames / destruction, the more "likes" ! Big Clive dot com - entertainment for all the Family!
That is something he has to try now :P
AvE has just reviewed an IoT Juicer. Perhaps a LiPO in a juice extractor will lead to greater things?
Damn now I want to do that but I dont want to stink up my garage
11:45 I love that comment he makes as he connects the pipe up. "Uuuuu..." is right.
Reminds me of another British TH-camr, SovietWomble. He makes exactly the same "Uhuhuhu"-sound.
I've learned so much from you, and I've learn not to mess with some things because of you. Thank you for that, you may have saved me from stupid rookie mistakes over the years.
what i love about this is knowing that youd be doing the exact same thing even if the camera wasnt there.
"I've got the tin handy in case this goes thermonuclear on me", and "What's the worst that can happen? Flames" - Priceless!!
Towards the end of the video, I was half expecting the exposed plates to start burning like a previous video but they weren't. I am glad that there was only minimal damage off camera.
You are the reason I have an explosion containment pie dish. It's a good use of the old metal dishes when my wife replaces them.
You also are a big part of the reason I got more curious in electronics and have learned a lot that I have.
Started watching a long time ago and still do.
This video was in my feed again, haven't seen it in a long time but always up for some lithium battery fun.
Nothing in the world is more relaxing than watching Clive rip apart some lithium cells. 😍😍
19:00
"Why do I do this? It's so foolish but I just keep doing it anyway."
Words of a generation.
Which generation? Little boys have been doing stuff like this since before Jesus played fullback for Nazareth.
This is actually safer than I thought... when I shorted one of those drone battery on accident the connecting wire just brow up like a fuse (that is like at least 8 AWG wire melting in less than a second, which is like 2.5kA peak at least 😨) and the battery actually seems fine
Yeah I've seen a post on a 12s pack vapourizing a guy's wedding band wen it shorted it out...nuts
Loved the video,. Giving warnings at every possible moment yet continues to proceed with deconstruction. Loved it
The "defusing a bomb" part was the best part. I would buy a audiobook voice by you!
22:36 - Uhm, Clive, that plate you put down is changing colour, I think this stuff is reacting with the air. These are probably pyrophoric as-
23:00
Yes... yes they are.
It looks great in the video, but I didn't actually see it happening so vividly at the time. Well, right up until they went whoomf!
for reference - lithium metal (the stuff in charged batteries) plus air = whoomp
Dead flat it is oxidised = no whoomp
bigclivedotcom ... lithium + oxygen, i remember our science teacher... same with white phosphorus = exciting!
i was looking for a review for these after looking on Ebay, and i thought to myself this is something bigclivedotcom would or should do and searching on youtube and WHAM! fancy seeing you here! what a pleasant surprise, thank you clive.
Jus found your channel, and it's quite the refreshing watch.
That was very interesting to watch. Now we know how those high current cells work :)
I read Snorting out a fully charged cheap lithium jump starter. (It didn't end well.)
"(It didn't end well.)" Well that's expected with snorting out, there's quite a bit of moisture that could cause a short circuit.
21:55 “this still is fully charged... oh that’s a bit scary”
battery: _fails safe by separating its plates_
clive: i'mma just pile both halves of this fire on top of each other on a wooden bench
The zigzag might be normal for this size package since a flattened roll would excessively thick on the edges but would also hinder the apparently self regulating safety mechanism of expanding under thermal runaway.
If I remember right, the explosive Samsung Note model fault was found to be caused by a lack of expansion room for the battery.
Samsung found two flaws in its suppliers' batteries. In the first batch, the cause was the negative electrode being attached to the wrong location inside the cell, which made the area prone to pinching. In the other batch of bad cells, a piece of insulation tape was missing where the cell tabs were welded to the foil, causing the welds to poke through the separator layer between electrodes.
While having more space for the cell to expand could have reduced the likelihood of those issues manifesting themselves, the second batch would have remained just as potentially dangerous.
Teardown Dan I don't understand why Samsung didn't manufacture their own batteries, what with them being one of the 5 main manufacturers of Lithium batteries and all that
The second manufacturer for the Samsung Note 7 batteries WAS Samsung. More specifically their battery division.
This seems to be the way all flat LiPo cells are constructed. All the ones I've looked at are exactly the same construction. But then I've only looked at high current cells...
High current ones use alternating plates for the parallel connections. High capacity ones use a core form to give the cells their mostly rectangular shape and the electrodes are wound around it with the external tabs crimped or welded to the electrode foils at some point.
this is why i love this channel. clive does things others just dont, i get to learn a lot and also enjoy watching him destroy a whole lot of things :D
I really like your show. I don't know much about Electronics but you're helping me to understand it, on my own projects.
"A test load that looks suspiciously like a bit of 15mm copper pipe."
Wow, it had more safety features built in than we were expecting!
Hi Clive, I estimated that spacing of the voltage leads at L =0.2m (20cm). The diameter of UK 1/2" copper pipe is given as 15mm (ext) 13.4 (int) giving a wall cross-section area of 31.2 mm².
The resistivity is RA/L then 110 uV/A x 31.2 x 10^-12 / 0.2 = 1.71 x 10^-8. Published value for hard-drawn copper is 1.77 x 10^-8 ohm-metres. A pretty neat experiment you did there1
Fascinating, thank you for testing that was epic. I'm glad to see it did not explode.
I think you should make available official Big Clive authorised spudgers, maybe pink ones ?
I would get one, definitely.
Hell yeah!
mike fear At this point I think iSesame is pretty well already the official Clive spudger. I dare say many of us already own one, or several.
No, Tartan!!
i want a pink one
How many times did I hear "I should have ___, but not to worry" - this is my new motto :D
Thank you so much. I have one I'm actually using in a motorcycle and I couldn't find any information in regards to the circuitry on these things. This is exactly what I needed. Thanks
Hi, this was super interesting! i work as what you could call a battery engineer, i have done what you are did here with lead acid batteries of different varieties. I have wondered about our lithium ion packs, now i dont have to take one apart!
Thanks for the video Big Clive!
ENGAGE SAFETY SQUINTS!
I have my mom on speed dial, just to be sure
INSTRUCTIONS UNCLEAR, DICK STUCK IN THE VICE!
HAH
Dark. Duke then you got it right. Well done!
When in doubt poke it with stick or twig lmfao
I love the "puffing up causing high impedance" inherent protection. It's much safer than I would assume.
Would be interesting to see a repeat with the case still in place, which could've minimized the swelling.
@@DoubleMonoLR The case would not contain the battery and crack open.
having morning coffee with bigclived what a way to start the day vice vid. THANKS
I had one of these booster packs. It was great as a power bank for charging phones etc. and my daughter found it very useful when she was doing DofE expeditions especially the torch. It finally expired when I tried to start a 2 litre Diesel, it overheated and became swollen and busted out of the plastic case, it didn't start the engine.
“Lets not go thermal nuclear”
*LITERALLY DOES EVERYTHING TO TRY TO GO THERMAL NUCLEAR*
If he really wanted them to go thermonuclear, he could've stabbed them through. Do not recommend trying that.
i had one once decided to solder a wire to the positive the cell started bulging then got bigger and blew up in my face bits cell and lithium all over the place, same as a 600v capacitor blew up up dad thought i had a 12 BORE gun. and bits of silver and insulate all over the work shop DONT PLAY WITH THEM.
Tremendous video! Best li- power bank dissection I've seen, unlucky you did not get those spontaneous plate flames on the record, how fast did it start after you left it? You instantly won my sub with your humour
I have three of these exact packs. Two of them have toasted circuitry, and the remaining one has suffered a wacky thermal runaway event... but still maniacally works.
Entertaining educational and exciting all in one vijeo. And since now I don’t have to do it myself it keeps me safe and healthy. So a big Thank You from me and my family!
BUMMER! 😭
⚡🔥⚡WE MISSED THE GOOD PART!!!⚡🔥⚡⚡🔥
Watching you open those cells made me think of an rc car battery I dropped and it hit a sharp shard of metal. I felt like Wil E Coyote standing in explosion of an acme 💣
hi bigclive, been subbed for a while now and i really like your videos. i never thought much of those jumper packs, never seen one work. i don't think it would start an old american v-8 at 10 below zero. keep up the entertaining videos, happy holidays to you and yours
Your drive for more knowledge, inquisitive x mischievous, I love it. Ye always start heavy electronics and I try to keep up, rarely can - then ye go 'Let's destroy it' and I go 'I'm back in!'
One of these LiPos caught on fire in my RC plane I wish I caught it on video it was a spectacular flaming nose dive I wasnt even mad it so impressive.
I tried to "troubleshoot"my lithium jump battery after it failed. I no sooner popped the plastic case open, and while probing the innards, I set off the lithium battery sack with a stray poke which resulted in a 1 foot burst of flame. Fortunately, the accident occurred on top of a stove. These things are real flame throwers.
It's almost as if these batteries go "YOU'LL NEVER OPEN ME ALIVE!" and just explode
I had a 3s lipo short in my rc car, it blow torched a hole straight through the esc into rx trashing both, all my own fault because I didn't secure the balance lead which wrapped around the drive shaft and shorted, it was funny as hell, the car shot off like a rocket SMOKING like hell.
Thank you you have one of the best TH-cam channels thanks for going thermo-nuclear on the battery big Clive I learn so much from you keep up the great work can you please do different types of car batteries and how they are refurbished and resold like refurbishing a maintenance free battery and maybe doing some form of using capacitors for starting cars like I see on TH-cam
I get excited about these videos before they even start..Good show!!
You had me on the edge of my seat once you began to disassemble the cell. I feel a little cheated not getting a glimpse of the conflagration.
Clive, if it is OK to ask, how has your mother been doing lately as I have not heard you mention much lately? I hope she is doing alright all things considered, dementia is such a terrible thing to have to watch in those we love. She is very fortunate to have you and your brother to care for her. Take care!
+Ethan Poole I'm actually feeding her right now. She's comfortable, but gradually fading.
bigclivedotcom Thank you very much for the reply and news. I'm grateful to hear she is doing well for the time being but I know all too well how hard a journey it is for everyone and how hard it is to watch our loved ones go through such as it is such a cruel disease. Your family is very much in my thoughts and I wish you and your brother, and especially your mother, all the best. Enjoy the time you and your mother have together and if she is a good story teller (and can still tell stories) consider recording them as that is one thing I would do different today if I knew then what I now know today (especially given how inexpensive it is to capture good quality video and audio these days) -- so very many questions about an earlier time in our history that I wish I had asked! Take care!
Awwww....this was heart warming
I'm saying this in a nice way, but you know you have good subscribers when there asking about your personal life in a positive way:).
nods his kitty head..
Oh Clive!! Sooooooooooo good to go back and see the “Original Clive” at work……..memories memories!!
Bob
England
Love your videos. As some one who likes to tear stuff down and tinker as well ive been toying with the idea of adding car jumping capabilities to my own home made power pack but after watching the tear down of these units i realize im using the wrong kind of batteries. So ill be switching from li-ion to li-po. I felt this would be the case when i came up with the idea due to the characteristics of the two. But your videos and some other info i dug up confirmed it for me. Thank you for this info and keep up the good work. 👍
I remember a few yrs ago I had a dead'ish cell phone battery and instead of just tossing it I wanted to know what exactly was inside it so I went in my basement to my workbench to try and find out. I couldn't find any non-destructive way into the battery so I chose the only destructive path to me that I could think of. I put it in my vise and clamped it down tight and started to smack it with a hammer. lol, smack, smack, smack! it then started to bend so I bent it back and forth till something happened. it sounded like a loud fuse went off! white smoke filled the basement! luckily I wasn't in the way of anything. apparently, when I bent it back and forth the chemicals mixed and reacted to each other started to pop out the crack in housing I made by bending it and smoked big time, lucky for me the fuse was actually facing down towards my metal vise clamp and ultimately only left a big white mark on the clamp. if it would have cracked on the other side instead I surely would have been burned somehow. lesson learned? don't mess with cell phone batteries or better yet let bigclivedotcom do it instead ... lol, I never did find out what was in it cuz after that and the basement aired out I really did not see anything inside of the battery worth noting.
Well, I guess you survived this battery dissection because obviously you uploaded the video. Anyhow, there were no reports of mushroom clouds over the Isle of Man.
Not necessarily, Clive has arranged for his brother to upload his *final* video.
There was a westerly wind blowing and ended up in my country. N.I.
This dedication to teaching should be an example .
I bought this pack off Amazon and was using it repeatedly to run a transfer pump off grid. Around about the 6th time it failed and did catch fire as opposed to just swelling. It was a sustained load to drive the pump motors and it didn't stay burning after I disconnected it. Exciting
"It's never stopped me before"
Famous
LAST
words
Love watching your videos, Clive, you're as funny as hell! So entertaining!
Just by looking at the design, in a fail state such as a short, these cells are safer that the roll design. No smoke and flames from the plates separating. Thanks for taking them apart and looking inside.
Mine was a bit more dramatic with fizzing and smoke. Will take more notice of the polarity next time even though the new one I bought (for about 3 times the price) has reverse polarity and overload protection. Freakin handy things to have
11:47 - love that sound lol!
Very nice and it shows that these batteries are really kind of safe.
The battery-fires in smartphones are most probably the work of tight packaging and internal shorts in the batteries.
Nah mate, it doesn't show that at all. While they have gotten better than they were (im talking like the RC lipo packs over the last 10 yrs), there's no guarantee that a random jump starter pack will actually use them vs the older more volatile chemistry mixes... and this one could well have burst into flames had it been a bit more 'robust' or held together as it would have been if it was still inside its plastic housing (as seen when clive pushed the plates back together - it still had some juice left in it).
you are one brave man sir. Playing with fully charged lithium batteries. I wouldn't dare even on my bravest day.
Clive, You Are Fearless.
I can’t believe how fast that swelled up 😳
That’s what she said
at 12:19 the pack gets shorted
Or just watch the dedicated video of the short.
bigclivedotcom oh lol I didn't even see that video came out, I wouldn't have commented this if I saw it ^^
Thanks. Im just here for that :D
I was reading comments just for this one! Thanks
I just wish Clive had shot the pack with a BB gun to accelerate the release of the shmoo!
This is by far one of your best videos.
I got ripped of with two of these pieces of junk for way too much money.
This was very satisfying. Glad your fire extinguisher is handy.
Literally just a stock 3s lipo as is common in the RC model hobby.
Yep, as soon as I saw the balance lead, it's like, "That's just a 3s". And a baby sized one at that. I'd be generous to say 2A.
Astrid Sunnybunny I would love to know the discharge "C" rating of that 3s battery
Wonder if that EC5 connector on the leads can connect to a nice 3S 50C lipo pack you balance charge yourself, heck even when jump starting keep one of those cell $4 monitors on the balance port warn of unsafe discharge
Typically these have a roll construction, but this one is different, opting for multiple plates instead of a huge roll. That means these are high discharge cells but a lower overall capacity with a 'safer' failure mode. They destroy themselves before they can destroy anything else. It's actually somewhat impressive for what it is, I underestimated it at first as well.
You could. The monitor wouldn't do much because a jump start is so quick, it'll start the car before the monitor registers the voltage drop. Plus when you turn the key, you've pretty much gone past the point of no return, it's already doing its thing. :) The monitor will be good for afterwards to check balance. :)
If you had a 4A 50c lipo, you'll be good for a 200A burst. :) Need two of those in parallel (capacity), to be in the safe range. At the end of the day, if you needed constant jumps, then it's better time and money spent on either fixing a charge issue or getting a new battery. If in cold climates, get a full lipo/li-fe battery replacement or a supercap boost pack.
I wonder about the nomenclature over there. When one of your short circuits causes your bench to go high order, which will respond? Fire Trucks? Or Fire Lories?
I believe they use the term fire engine
@@coomcake And the generic term hook and ladder vice ladder truck?
love these videos Clive - i watch your videos for the little quips you insert in between bits like on this one "dont want start a thermonuclear explosion" or "ooh - 4 volts - its still fully charged - thats a bit scary" haha! brilliant 🙂
awesome video, I liked the destructive testing and battery autopsy very much!
Ooh, someone needs to do this again but with an anvil on top of the cells 😈
correct me if I'm wrong, are you Scottish? I really enjoy your videos :) I almost expected you to say it's Dodgy lol
+Econotech Yes I'm Scottish.
bigclivedotcom I am too, but not as pronounced :) keep up the awesome content :)
He literally replied two comments above you.
There were zero comments when I replied because youtube doesn't have a live comment section. So I literally didn't know, but thanks anyway.
+bigclivedotcom Clive, to power up this circuit after removing the battery, you must first reconnect the 3S Cell, and plug in the USB. Only then will the board spring back to life .
I have a few BMS boards that work exactly the same way. Deactivate once cell is engaged, then charge source added.
There are several "creative" uses for these, would love to see you explore them more in depth.
We use larger ones as a primary pack in a low draw starter car, and this specific one on our CRG Rotax racing karts !
Modded mine to accept a external balance port and charge it via RC charger, these can be versatile items in the right hands, would love to see exploration into better uses.
Seeing that Lithium react to air reminded me of a school lesson I had many, many years ago. The teacher was explaining the periodic table and specifically how reactance changes between rows. Out came an 18-inch diameter pyrex bowl half filled with water. Then, the teaching assistant appeared with 3 ominously black jars full of oil . From each, one at a time, the teacher removed a small silver cube, which he sliced a sliver off. Each sliver was dropped in the water. The first fizzed a bit and burst into flames. Fire on water impressed us 11 yr olds ! This, it turns out, was sodium. Next came phosphorus, which set of round and round the bowl fizzing like mad. Finally came lithium. This was quickly followed by " whoops, i think i cut off too much" as the whole bowl exploded, covering the safely distant bench with glass, water, and an angry silver sliver in flames !😂
That thing of charging/discharging an individual cell has proved me well too in the past, had a series connection that had a cell come loose and so it was stopping my pack from charging fully, hooked a 4v motor to it and it dropped it down enough for the bms to do the rest. It was like that for 6 months, the bms not only saved my 1.3kwh battery but also stopped my house from cathching fire. Always use a bms, or at the very least Always balance charge.
500 amps is impressive even for a few seconds
@Dave Micolichek when he used a new diode pack, it was a couple seconds, but it dropped to the 100 level
How come you didn't catch the flames and smoke on camera, Clive? :)
Description ^_^
Whoops, my bad! Always the luck of having the camera turned off huh?
I was a bit disappointed that the "accident" was not dramatically re-enacted for the camera.
I think Clive should keep a web cam pointed at his bench and use an old computer to spool the video. Even crappy lo-res flames are better than no flames.
There were still some cells left, maybe redo it for entertainment purposes?
Very interesting :) I like your analytical approach.
You are absolutely my most favourite TH-cam nutter of all time! Your videos are fantastic! Take care, Poo
“That is one THICC cable”
Thats nothing theres cable used in industrial electrical about as big a round as ur neck