This is why it’s a good idea to disassemble lithium-ion battery packs for its cells. In most other cases, just a single cell has failed. Remember, battery packs are made of many cells that are grouped in a specific way. So, if one cell dies, it will bring down the cells that it is immediately attached to.
In order to remove the cells you will need to carefully insert a mat knife into the space between the blocks and carefully cut the plastic connector tabs off. It’s incredibly important that you don’t cut through the cells while doing this because cutting though a lithium cell is bad (you will have to trust us on this one).
Remember, battery packs are made of many cells that are grouped in a specific way. So, if one cell dies, it will bring down the cells that it is immediately attached to. This is bad news for the cells in that group but it's good news for the rest of the battery pack. It generally means that the other cell groups are just fine.
Do not throw the old Lithium cells in the trash, you must take them to any home supply store to recycle them. There is usually a bag to throw them in by the entrance. It is against the law in NYS to throw away recyclable cells of any kind, they must be recycled. Once the nickel strips are removed you can remove the plastic pieces.
It generally means that the other cell groups are just fine. Lithium-ion battery packs are spot welded together. So it's no small feat to separate the cells. In fact, breaking down a lithium-ion battery pack is a rather involved process that takes care and patience. You have to be extremely careful when breaking down a lithium-ion battery pack.
It’s incredibly dangerous and one wrong move can kill you, maim you or leave you blind. If you take apart a Lithium pack you immediately void the warranty, no dealer in their right mind is going to take that battery back. Soldering the end of the lithium cells can cause them to blow up in your face leaving you blind.
You need to peel the nickel strip from the cells. Cause it''s welded to the cells directly. Flat side cutters are good to have when dealing with them. I suggest cutting it into single cells first (or just cutting the nickel strip in-between them if …