This guy actually blew a A123 cell + there was to fire!

[ICUBoy]

Hi all
Just as a follow up to this thread I thought I'd comment on my own misadventure.
For complex reasons I had to replace the Deans adaptor on my 5S pack.
I was lazy and simply cut the wires off the plug, retinned them and started to affix the negative lead to a new plug.
JUST as I was about to slide the heatshrink into place I moved the cells and the positive lead flicked up and touched the negative lead on the Dean's plug.
Zap.
The 12G was WELDED on to the solder and I couldn't pull it off.
It took 5 secs or so to cut the negative lead and in that time I heard a hiss and bubble. The pack and leads were hot as after a solid run.
One cell reads near-zero volts but looks normal. The rest are fine.
So now I have to run the Maxx off 4S2P, or maybe I'll try 9S with the HV ESC from UH......