Death of a A123 Cell

[Big House]

I took my converted Super RS4 out last night for some wide open runs. Towards the end of the run I reached the limit of the battery powering the MM 7700. I heard two small subdued pops and I brought it in. Looking to see if andthing was broke and seeing nothing, I took a whiff inside the body and a resin like odor was coming from the car. I disconnected the battery and to my surprise, the shrink wrap had melted and the cells had popped open, and leaked the contents of the pack out. Had this been a regular lipo, my car would be up in smoke. My hats off to A123, but now I need a new battery.