[–]▶ No.892381>>892508 >>892514 [Watch Thread][Show All Posts]
You now know more about this subject than anyone else you'll ever encounter in real life
▶ No.892382
▶ No.892388
▶ No.892392>>892396 >>897362
Big Clive is a fucking G. I wish I could have a lint with him and Ashens irl.
▶ No.892393
"my friend just has access to an electron microscrope which he can use at anytime to zoom in on random shit"
must be a nice job
▶ No.892396
>>892392
I meant to type pint, not lint
▶ No.892400>>892465
is the last side the copper punching through the insulation shorting the cell?
this is what i envision the last pic in the vid.
▶ No.892409>>892544 >>892924
Oh hey, I already had this video open and buffered in mpv.
I've got 32 mpv windows opened which have my current youtube backlog in them
▶ No.892465
>>892400
That does sound right
▶ No.892475>>892483 >>892488
Can someone explain to a numbskull like me what he was attempting to explain in the beginning of the video about how certain cells reach zero volts?
Let's say certain cells reach zero before others, why won't they then charge again with current going through them and what is reverse charge?
▶ No.892483>>892492
>>892475
Wikipedia:
>Cell reversal can occur to a weakly charged cell even before it is fully discharged. If the battery drain current is high enough, the cell's internal resistance can create a resistive voltage drop that is greater than the cell's forward emf. This results in the reversal of the cell's polarity while the current is flowing.[3][4] The higher the required discharge rate of a battery, the better matched the cells should be, both in the type of cell and state of charge, in order to reduce the chances of cell reversal.
▶ No.892488>>892492 >>892500
>>892475
>certain cells reach zero
By zero he doesn't mean that it is just so low that it reads zero volts, but that the cell is actually broken. A broken cell won't be able to charge.
▶ No.892492
>>892483
I understand completely now, so it becomes reverse charged due to the battery arrangement. So it's not wise to let batteries like that discharge completely.
>>892488
That would go against the point he made how certain cells become reverse charged, wouldn't it? Or is that after the fact?
▶ No.892500
>>892488
Voltage is analogous to "pressure". If all of the cells have the same pressure in the same direction, current will flow in one direction. If one of the batteries, for whatever reason, has significantly less pressure than the others, some of the current will flow back into it in the wrong direction, and this damages it. Having low voltage doesn't mean the battery is broken, but it does mean the battery is now actively being damaged and will be totally broken in the future.
▶ No.892504>>894813 >>894868
this is why cryptocurrency mining botnets on commodity android phones are a health hazard
your explosive tracking device might just damage your genitals
▶ No.892508
>>892381 (OP)
I was kinda bored trying to figure out his accent until he starts up showing the pictures. Thx, it turned out to be a great video.
▶ No.892514
>>892381 (OP)
This should be mandatory viewing for vapists.
▶ No.892539>>892542 >>894625
For anyone playing with these at home:
Lithium cells should be kept above 2.5V to 3.0V depending on variety to avoid long term damage (typically just reduced capacity).
Li-ion protection circuits, found on ebay for a few dollars, will prevent dumb loads from dropping below that threshold. These are just specialist comparitor ICs switching a power MOSFET but you can alternatively use an ADC if you are powering a microcontroller. Most of these are labeled as "BMS" but they do no balancing.
Does anyone have an actual cite for whether a 2.5V discharge is healthy long-term? Because this is what the ICs on those chinese boards typically cut off at.
▶ No.892541>>892951
>want to replace old battery cells in laptop
>never soldered before
>don't want to die in an acid explosion alone in my apartment were I'm found a month later because I didn't pay rent
▶ No.892542
>>892539
>Does anyone have an actual cite for whether a 2.5V discharge is healthy long-term?
The cell's datasheet
▶ No.892544>>892547 >>892675
>>892409
>32 mpv windows open
▶ No.892547>>892863
>>892544
>he doesn't watch porn
▶ No.892675
>>892544
Your lucky I don't have my anime backlog open too. Luckily for that I have a directory with symlinks to everything I need to watch.
▶ No.892815>>892885
>basic electrical engineering info
>software engineer goes "hurr ur now is smurt xD"
Where would we be if there were no bloated ego software engineers, I wonder
▶ No.892885>>892973
>>892815
Seeing as there's people who still buy into the memory effect meme and they're a shitton, if you know how a lithium cell really works you know chemical accumulators better than 99.99% of the earth's population
▶ No.892951
>>892541
find a makerspace
▶ No.892973>>900298
>>892885
This, batteries are NOT electrical engineering they are chemical engineering and materials science. Electrical engineering gives no fucks about the internals of the battery, only about the input and output characteristics and how they play in the circuit network.
▶ No.893353>>893362 >>894626
I have a pair of unprotected Panasonic 18650 cell that were involved in a chink power bank short circuit. The springs were red hot and the PCB smoked. The short circuit lasted around a second.
How safe is it to try to charge those cells or stick them in a flash light?
▶ No.893362
>>893353
If the pressure relief valve that's under the positive electrode swelled up even a little throw them out.
▶ No.894625
>>892539
2.5V is not a long term storage voltage, that would be around 3.7V. 2.5V is an absolute lowest discharge voltage, going lower would mean that you start damaging the cell. Have a look at BatteryMooch's youtube channel, he knows his batteries.
▶ No.894626>>894677
>>893353
Just throw them in the recycle bin and buy some new ones, they're dirt cheap man.
▶ No.894677>>894813
>>894626
$5 each ain't cheap.
▶ No.894813>>894830 >>894891
>>892504
Who the fuck in their right mind would use a cellphone to mine cryptos?
>>894677
nahh man that sheep i went to bst buy yestrday n sheet an got two packs of 10 magic energy machines for 50 bucks dawg. sheet you need mo money hey can i have 50 bucks nigga? gotta pay my rent dawg
▶ No.894830
>>894813
>Who the fuck in their right mind would use a cellphone to mine cryptos?
Malware developers
▶ No.894868
>>892504
Ideally, if a device shorts you'd want it to happen with the minimum amount of charge possible. A mining botnet might actually save your life by emptying the battery before it fails.
▶ No.894891
>>894813
maybe it's worth it when you have tens of thousands or millions of bots? of course there's some threshold that a single worker has to be able to reach to even do a unit of work
▶ No.897362>>897367 >>897378 >>897392
>>892392
big clive is a fucking fraud, hes an actor like most youtubers
Watch him solder and you can tell he hasnt been around electronics very long.
He probably rehearse for a week before making a program.
▶ No.897367>>897368 >>900236
>>897362
He has done tours of his work and has expressed knowledge well beyond someone who's only practised for a week.
Don't you think a channel like his is too much effort to fake?
▶ No.897368>>897370 >>897392
>>897367
Yea he put a lot of effort in his productions
to hide the fact he is a fraud
This is extremely common, pay attention to a lot of the workshops in youtube the tools show no sign of use and wear, very odd for someone claiming to had carpentry as a hobby for 20 years .. ? its all prop recently bought to harvest youtube shekels.
▶ No.897370>>897371
>>897368
Wow, tool wear. Years of knowledge and experience can be invalidated tool wear. You are such a genius.
▶ No.897371>>897372
>>897370
yes exactly that
if you see a pegboard with full of new never used tools
the guy isnt using them -is that simple.
▶ No.897372>>897376
>>897371
But of course. If the tools are not use, the guy is guaranteed to be a fraud. Now that's true wisdom.
▶ No.897376>>897444 >>897518
>>897372
pretty much
If you claim been doing something for decades you will automatically end up with a bunch of odds and ends and worn tools.
big clive fuck up his larp when he grabs a soldering iron making it very apparent for anyone that actually used one for a while he hasn't.
▶ No.897378
>>897362
You must have missed all the videos he shot outside his house
▶ No.897392>>897455
>>897362
>>897368
How would this scheme you're proposing would even work? Just how fast you think someone could get back something between a couple to a dozen grand just plonked down on tooling and equipment through ad revenue?
▶ No.897444
>>897376
Or maybe he's just got a new one?
▶ No.897455>>897462 >>897518
>>897392
LARP:ers is a personality type
I knew a faggot when he bought a house he also bought a entire workshop worth of tools, expensive tools like festool, to my knowledge he never used it for anything.
▶ No.897462>>897478
>>897455
Not even for Youtube videos? If yes, then what the fuck are you mentioning him for? If no, then great sample of size one.
▶ No.897478>>897518
>>897462
id say about 50% of youtubers are LARPers
like that squeaky voice electronic guy i think he is from australia
he has like rack with 20 multimeters behind him to accentuate his virtue in electronics
▶ No.897518>>897523 >>900311 >>900330
>>897376
>>897455
>>897478
>larp me this, larp me that, a larp here, a larp there, larp larp larp larp hurr
Has "larp" become a synonym for both "troll" and "shitpost" recently? Because it sure seems to. It's frequency of occurence (there's barely any thread where it isn't uttered at least a few times) around here has been rivaling such mainstays as "autist", "botnet" and "cuck". So what's the deal?
inb4 according to responders I'm "larping" right now too
▶ No.897523
>>897518
>slowpoke.tiff
I don't think you're pretending to be retarded, Anon~~
▶ No.900236
>>897367
the effort is in the shekel potential
▶ No.900298>>900306
>>892973
>Electrical engineering gives no fucks about the internals of the battery, only about the input and output characteristics and how they play in the circuit network.
This how a code monkey software engineer things:
"Give me inputs and outputs and I will hack it together in janky code"
Get fucked idiot
▶ No.900306
>>900298
Input/ouput characteristics is literally the foundation upon which all circuit analysis is built.
▶ No.900311
>>897518
For real, people are always calling each other larpers online which doesn't make any fucking sense. I guess a guy making videos on camera pretending to be someone else could be called a larper though.
▶ No.900330
>>897518
>LARPer
I think it's the new word autists around here adopted for poser.