123 cell protection anatomy revealed

[NewBie]

More great pics! Is that a solder blob on the button?

Paul

It sure is. I used it for making a very solid connection for some high current testing I was doing. I'd not recommend anyone else doing this, it can be very dangerous to say the least, causing a short in the cell, and a resulting vent/explosion.

 

[InfidelCastro]

Makes you wonder how the protection failed to initiate in the Battery Station cells in that last Ka-Boom thread.

 

[NewBie]

More great pics! Is that a solder blob on the button?

Paul

It sure is. I used it for making a very solid connection for some high current testing I was doing. I'd not recommend anyone else doing this, it can be very dangerous to say the least, causing a short in the cell, and a resulting vent/explosion.

 

[NewBie]

Okay, here is the internal construction of the Battery Station 123 cell, shipped to me on June 26th, 2006, manufacture dated as 02/06, and is brand spanking new, I've had it less than 2 days:

Overall cell:

Taking the wrapping off:

The top of the cell, with the black washer off:

Intact cell internals, can opened:

Seal end of cell, showing how the seal is made:

PTC on left, sitting on button, right side is vent assy with vent layer intact:

PTC closeup:

 

[cy]

Holy cow! is that rust in a new cell?

The top of the cell, with the black washer off:

PTC closeup:

 

[NewBie]

Holy cow! is that rust in a new cell?

Unfortunately, yes, it appears so.


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