18650 CID Reset ⚡ DON'T DO IT! ⚡
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- Опубликовано: 10 июн 2018
- This video is dumb - please don't reset 18650 CID's for your DIYPowerwall
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Pete
this is what is needed so it becomes clear what is acceptable and what to avoid at all costs
2018 - 2020 :) Tried it on a dead 4 cell battery pack. (not used a lot and lay in the shed over a year sadly 0 volt.) Popped the CID back into place and they all measured 2.x volt. Charged them slowly with 200mA and raised the voltage to 4.2V. (inside lipo bag) They stayed cool to the touch and now they work like they are new again but like any other lipo li-ion they are monitored and replaced as soon as they do unexpected things. As far as I could find out the CID was invented after a bunch of 18650 burnt "down" a plane (while on the ground) so, safety is cool but it's not uncommon that batteries form a small amount of gas due to chemical processes, and yes! pretty fast if charged or depleted incorrectly. Anyone using LiPo's in RC knows this and these are even more dangerous than Li-ion.
4 years later and this info is still valid. Thanks for not deleting it.
That cell has an internal short. You can tell because when you voltage test the voltage drops from the continuity of the tester. There are many reasons for cells to have a popped cid. If you reset and test voltage, if that voltage drops while checking it, it's trash. If the cell voltage is over 4.3v after resetting it's trash. I have thousands of cid popped cells. I may make a video since we have the capacity to reset and test thousands at a time. And get some real data analysis. That cell in this video was bad from the get go. First sign was voltage going from 0.20, 0.19, 0.18, etc. Just from checking voltage. All cells that do that get hot. 100% of the time.
" I'm doing this so you dont have to " is what I was looking for, nice job there. recycle, fellow electricity maniacs, recycle!!
Safety shield anyone? 😁
Safety shield anyone? 😁
I have a full pack of dead cells going into the recycle after watching this video. I checked the voltage and all under 1v from a scooter pack. looks like water had gotten into the BMS. I have plenty of faulty Makita packs with good cells. This will be my first project and thanks for the heads up.👍
Lots of different situations, i revived 0.44v panasonic cells an they still had 70% capacity and no self discharge. I had cells at 3.4v and at discharge test they failed in 2 seconds. But if a battery is 0v i never use those nor the ones that can stay in charge forever and not gain voltage
the battery probably popped because of a thermal failure... I appreciate that you posted the video anyways...
LEAVE THEM OUTSIDE OF THE HOUSE OR GARAGE= I NEVER HAD A PROBLEM WITH RESET CELLS AS THEY WILL POP AGAIN
This is an excellent video. Typically, they don't recommend attempting to charge ANY lithium ion cell that has fallen below an open terminal voltage of 2.3 volts. Any commercially available charger has a built in threshold voltage under which, for the sake of safety, will not attempt to charge. In use, they say to cut them off at 2.8 volts. my designs cut them off at 3.2 volts. You still get well over 90% of the battery capacity, with enough of a margin, that it can sit for a while. In a radio controlled model airplane, cutting the main propeller at 3.2, leaves enough in reserve for flight surfaces, for a controlled landing. I typically cut the charge at 4.16 volts, rather than the full 4.2 volts, just to improve the cycle life of the cells. you still get 85-92% of rated capacity. By limiting the charge/discharge voltages, batteries last much longer, and are more safe. As far as this experiment, my results were exactly the same as yours. If you pick up a cell that shows 2 volts or less, it's ready for the recycle bin. Voltage balancing during the absorption charge is a must! Any time multiple cells are in series, it's imperative to have voltage balancing to guarantee that no cell exceeds 4.2 volts while charging.
Yep, i have to agree with you on this video. In the last couple of weeks I've been researching and studying these 18650 rechargable batteries. I've watched a lot of videos on how to recharge a dead/ no charge battery but none of them show a long term or long term useage or the problems that could arise. You video here is gold and solid advice to all. Why? Because as you said, these batteries lost their charge for a reason, plain and simple. You video here tops my charts and i think is the best advice to everyone. Thanks.
Well done mate. I've had soooo many 0 volt cells, all to the recycler too!
Awesome video! I learned a lot, even if it was not succesful. More about the 18650 cells, what to avoid, security stuff ,etc. A very constructive video. Thanks for share it!
I just want to say that I think it great you did this video. I am getting ready to build my first powerwall, and safety is my biggest concern. Keep the safety tips coming.
Thanks for that info and demo there mate, i had no idea about that stuff and given im looking at starting off in this field thats super handy to know!
Thanks HB. I don't know if it was mentioned that if the CID were to be damaged by jamming a screwdriver into it. Could render it "stuck closed" and not pop again when needed second time around. Great video!
Bullocks, I've been doing this for years. Of course I have no depth perception and I shake hands with my left. Good vid!
Hi Pete. Thanks for pointing this out to the community please don’t feel silly about this video, it is essential that others learn and don’t get fire trapped, in my opinion it is far more sensible to do due diligence by obtaining spec sheets on cells prior to purchasing them, too many people seem to be tempted into buying cheap lightweight shit.