AlexZhang

Look at this image. Http://mdiy.pl/wp-content/uploads/2014/07/18650-cid-ptc.jpg I'm physically pushing the CID down. understand that these cells do not have a PCB protection circuit. There is no contact from positive to negitive. Even if there was 2 seconds won't Destroy such a low amperage cell

I know what I'm doing I have done it 100s of times without incident. There's a layer of plastic over the neg terminal and I'm going nowhere near the terminal

There is no protection circuit on the cell. I'm pushing a mechanical device down in order to have it make contact with the cell itself. Now Google 18650 current intrupt device nothing is getting shorted.

I don't get what you're saying. Yes I get ohms law but what do you mean by cascading? Do you mean thermal runaway? Because that won't happen with this unless the positive terminal gets shorted with the negitive and if the battery can supply enough amps. What I'm doing here is pushing a small circle of bimetallic metal back down to meet with the positive terminal, the negitive is not touched. Cut off the top of the cell with snips you'll see a concave disk, if it's a bad cell the disk will be convex pushing the disk together remates the CID with the positive terminal of the lithium. So I don't get how I am shorting the battery? Also there is no protection circuit on this cell as it's salvaged lithium.

These wont supply that much amperage. Also it is hard to get it to short like this as there is a layer of protection

I suppose it is fine 1v for a little while is not too bad

https://patentimages.storage.googleapis.com/US20040232888A1/US20040232888A1-20041125What I'm doing is resetting the CID

I don't understand why you would want to do this. Wouldn't it be easier just to look at the trash can when you throw something in?

Hi. The issue you are describing is that you have discharged your 18650 way too low that your charger will not accept it. There are many ways to fix this but I need to know what you have access to. Can you please tell me what brand of 18650 it is and how long it has been discharged? These will all effect the current capabilities of the cell. Generally good cells wouldn't really suffer while cheaper cells will. If you have a variable power supply you can Google: recovering 18650 cells by rinoa super genius. If you do not have a variable psu you can: buy an xtar v2(this is the easiest as the charger does it for you), buy a cheap 18650 power bank case from eBay and use that to charge it up. Or to parallel it with a aa batt and bring it up to 1.5 v then using a cr123 to bring it up to 3v. U...

Hi. The issue you are describing is that you have discharged your 18650 way too low that your charger will not accept it. There are many ways to fix this but I need to know what you have access to. Can you please tell me what brand of 18650 it is and how long it has been discharged? These will all effect the current capabilities of the cell. Generally good cells wouldn't really suffer while cheaper cells will. If you have a variable power supply you can Google: recovering 18650 cells by rinoa super genius. If you do not have a variable psu you can: buy an xtar v2(this is the easiest as the charger does it for you), buy a cheap 18650 power bank case from eBay and use that to charge it up. Or to parallel it with a aa batt and bring it up to 1.5 v then using a cr123 to bring it up to 3v. Use a 5 ohm resistor while doing so. Once at 3v it should be able to charge. There are many more methods of recovering cells just ask if you need to know.

Positive. It's the only terminal with the CID.

Since the paper clip isn't contacting the other terminal there isn't a chance of shorting. Also it won't contact the cell layers so it won't short. The only thing that gets touched is the CID and you can think of that like a can lid. It pops up due to heat and you can push it back down. The worst thing that can happen is a puncture of the seal which is unlikely.. If that where to happen small amounts of electrolyte leaks and drys the cell out not much else.

This is really sketchy. Your cells leaked electrolyte and yet you still reuse them. Replace the 18650s. Also If you want more veiws you should consider changing your title image

Water will cause the led leads to get corroded really fast due to electrolysis and generally isn't a good idea. Try using mineral oil instead

Thanks. Have fun. Also if you have multiple batteries you might want to look for a multiple 18650 battery case

Thanks

You can go to your local computer shop and ask for some defective laptop batteries

Use a standard 12 v supply. The sander should be able to self regulate current.

The price per cob is roughly the same as the price on ebay

Your xml lamp looks more of an xpe lamp.

it weighs roughly 210 grams