Have always had good luck with charger/lipos minus a couple punctured cells in a buggy that led into leaking the lipo smoke. But nothing like what happened this time around. Was charging a venom 3s pack when out of nowhere the lipo decided to overcharge and burst into flames. Take my loss as an example to use precaution when using/charging/storing lipos. Use lipo sacks!
Luckily, noone was injured at the track but I did sustain a substantial amount of equipment loss.

2 venom ultimate 10a chargers, 2 common sense blinky balancers, 2 venom lipos, 3 gen ace lipos, power supply, jawbone bluetooth, and misc. accessories. Charred (had to be repainted) DX3R transmitter.
http://www.youtube.com/watch?v=egEl-M7CamM
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After: