o High voltage shocks o Direct jet flames o Fires develop in intensity quickly and rapidly reach their maximum intensity (typically within 2-3 minutes) o Toxic gases o Gas explosion (if the released gas accumulates for a while before being ignited) o Long lasting re-ignition risk (can ignite or re-ignite weeks, or maybe months after the provoking incident) o Once established fires are difficult to stop/extinguish o Thermal runaway