Off brand near mishap?

[Pellidon]

I have an off brand battery for my Sony PSP that let go. It hasn't been used in a while and was sitting on my file cabinet. I walked by and noticed a circuit board that was not there before. The lithium polymer cell expanded in the hard plastic casing, breaking it open.

Fortunately the cell must have been in a safety bag that has held the expanding gases. Given the cell was on top of a bunch of paper. Now the cell reposes in a tin can on a concrete floor away from any flammables.

My guess is it dropped too low and failed. The only abuse I inflicted was neglect. So I'm more wary of off brand batteries like that.

 

[Pellidon]

Here is an image with a model for size comparision 😗

 

[Kestrel]

Wow, that pack is really swollen. But what's that silver object on the left hand side of your photo? :nana: 😉