Yes, some do and have done in the past. But we need to understand that there are many different lithium ‘chemistries’ on the market today, some are more volatile than others. We use lithium iron phosphate, a particular type of lithium ion chemistry that is considered the most stable and not prone to ‘thermal runaway’ (which is a fancy name for fire). Our cells have even undergone puncture testing with a nail – no fire or explosion resulted. This also highlights the safety-critical importance of a Battery Management System (BMSwhich has the important job of preventing the cells from going outside the safe limits in the first place. In fact I would say that it is usually the fault of a dodgy or ineffective BMS that causes thermal events.  Therefore the cells that we use, in conjunction with our BMS, provides for a very safe and reliable battery.