I've never opened a lithium cell that has an internal short circuit before, so I thought it would be quite interesting to do. It was also a good opportunity to see how they jam so much chemistry into the standard 18650 package. If this is how stuffed a 2200mAh cell is then it shows why the 3000mAh cells are so expensive. There must be a lot of work in jamming even more chemistry in, and it shows how safety could be compromised by pushing everything to the edge to make it fit.
The other video where I discuss the rechargeability of over-discharged cells is here:-
https://www.youtube.com/watch?v=sRwoYJyjZNo
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
http://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty.
The other video where I discuss the rechargeability of over-discharged cells is here:-
https://www.youtube.com/watch?v=sRwoYJyjZNo
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
http://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty.
Answering questions I've had for years. Thanks for all the great content
I want “Smell that carcinogenic goodness” on a hoodie or shirt.
Probably wasn't the best thing to breathe lol. I had to replace the 10 year old six volt batteries in our aerial boom lift earlier and used muriatic acid to clean the jumper cables sice they were covered in green crust and the noxious cloud really distorted my taste buds and was most noticeable when I attempted to smoke a cigarette and it tasted really weird. That same thing used to happen when I would seat new commutator brushes in DC elevator drive motors with a special stone that helps the brushes conform to the convex shape of the commutator.
In lead acid batteries, supposedly a higher current charger could break some of the sulfur off the lead plates, but i think that would ultimately damage the plate.
E gypsum Jin and Tonic 😅
So why didn't it explode when you took it apart? is it because it was dead before hand?
Thanks, always learn a lot from you.
Mocks people: "Oh no there are horrible chemicals that will give you cancer and you will die"
Also Clive sniffs It smells great
Also Clive: "what was this sentence about again?"
So a perfect battery pack has all cells in parallel with a voltage step-up circuit?
Taking apart lithium ion batteries while drinking G&T. LOL.
I have a presario CQ57. 2010 I BELIEVE. The battery is shit. But everthing else seems nice. Nowadays both are shit. I have a bunch of silly hide and seek games I like on it.
Very interesting, i have never taken a lithium battery apart before and now i have no need to. Just so completely different from the older carbon type batteries. I wish i had had professor Alice Roberts as my history teacher, i would definitely have taken an interest. However, my old physics teacher was one of only three teachers i got on well with at my old school.
Thats it im pronouncing it Ah-loo-mini-um
I had a lot to do with the early lithium polymer aluminium pillow style batteries for radio control. In this application everyone wanted the maximum discharge current donated in multiples of “C” being the capacity of the pack. Early packs from memory where rated at 5C and the last I remember up to 40C and I think much greater now. Balance charging was the order of the day so individual pin outs for each cell and a loom and balancers or balance chargers. And caution advised when running packs in parallel. The ducted fan boys had recharging trailers set up with multiple good 12 volt batteries chargers and serious “fanatics” see what I did there camping generators. They where getting to voltage levels with multiple series packs that required an electrician to approve and ducted fan thrusts in the 10 kg range similar to a medium sized turbine. I have successfully recovered packs where one cell has dropped under three volts by charging this cell individually on low current until over three volts then you can charge at 1C. Safe charging of all these cells was 1C with later cells taking 2 or 3C. Very interesting tech and made electric flight a reality for radio control. Wobbels the mad Aussie.
I know this video is 5 years old but just s top tip for anyone having battery issues on laptops.
What happens is over time the BMS loses function. Most laptops have a BMS reset procedure that will bring the battery back online and properly charge the cells as required.
The 2 dead cells in this pack are no doubt a result of a poor BMS and continuous charging from the wall plug because runtime was becoming an issue.
As soon as your battery starts to show performence loses. Do the bms reset procedure and thank me later 🙌