how to get 18650 cells from dead laptop batteries! - 18650 battery cell

We usually use power for prototyping when building a project, but if it's a portable project then we need 18650 li-
But these batteries are sometimes expensive, or most sellers don't sell genuine ones.
So in this post, I'm going to show you how to extract some good quality batteries from old laptop batteries, let's get started.
If you don't want to see my video tutorial, the first step is to find out some old laptop batteries and you can go to the scrap yard nearby and ask if they have them, that's what I did, or you can search for some items online on eBay.
I bought these 6 battery packs for only $14, which is already much cheaper than buying them directly.
Now all you have to do is take a flat head screwdriver and carefully remove the case.
I usually first find a weakness like a border and then slowly start taking it apart and once you see the battery inside you can take the plastic apart with some brute force.
Once completed, keep the battery pack as it is and repeat the same process for the remaining battery pack, we will be cautious later!
Please be careful as the plastic inside can be sharp!
Once you tear off all the battery packs, take a diagonal cutter or metal cutter and separate all the batteries and also remove the circuit because we don't need it, but don't use it like we can in future projects.
Let's continue to separate them now.
After that, metal pieces are also removed from the top and bottom of the battery.
Now we have to charge all the batteries, but before that, we need to separate all the batteries according to their conditions, measure the voltage of the battery with a multimeter, if the voltage exceeds 3 v, the voltage is between 2.
5 v to 3 v, average battery if the voltage is less than 2.
5 v this is a bad battery and throw it away to charge the battery we can use the IMAX charger or one of the tp 4056 modules.
I borrowed one because one charger was not enough and also charged the battery with tp4056.
The charging current of the battery should be as follows, 1)3.
For batteries with a voltage greater than 3 volts, 7 V, 1 amp)3. 7V, 0.
The battery with a voltage between 2 is 75 amps. 5 V and 3 V)
If you want to try to restore a dead battery with a voltage of less than 2.
Then the voltage should be 3. 7V and 0. 5 Ampere or 0. 3 Amps!
If the battery is too hot, monitor the temperature of the battery and immediately remove it from the charge!
The last step is to check the capacity of the battery, which is for me to use my DIY capacity tester link-
All cells are separated according to the capacity of the cells.
That's how you can now use these cells in your project!