protection circuit

One of my TF 3000 stopped working, after one use.

I have made a picture from the PCB, right FET is burned.


Damn apple, they should build some retina cameras instead of displays.


Here a better picture from my cheap android phone.
.

Damaged one is gone.
.

Soldered PCB back in.
.
.



New shrink wrap

It charges again, now I have custom low current battery. I call it NOFIRE.
There is a paper spacer ring, to prevent circuit from a short. So if you build one up from zero you need this too.