Now users of all models and brands of ESCs can appreciate and enjoy the advantages of Lithium Polymer (Li-Po) battery packs without the fear of damaging the cells. Novak's Smart-Stop Li-Po Cut-Off Module is available for 2-cell (#5470) or 4-cell (#5471) Li-Po battery packs and can be used with any brand brushed or brushless speed control for car, boat, or air applications.
For the Ballon thing .... dont dare to use it again, since it will cause potential explosion.. the root cause may be vary, like .. overcharged, selected wrong number of cells upon charging or overheated ur lipo etc
One point u need to be sure is that, Lipo dont required to drain ( dead shot ) or discharge for storage.. just peak it off then store .. battery may keep for at least a week or 2 .. if u discharge it below 6V . it will dead completely ( but WONT ballon up a bit ), so, better use a ESC with voltage cut to avoid over discharging ..