These batteries will be the same "family" as Lithium-polymer.
Lithium Polymer has revolutionised the model helicopter world, a huge energy-density,massive discharge rates and rapid charging rates are some of their advantages...oh, they can be shaped to fit almost anywhere,
The down-side -charging control is absolutely critical , as is balancing of cells and a need to discontinue discharging below a critical voltage.
Failure to keep on top of things or the normal level of in-service failure of anything man-made, has caused house-fires, car -fires and other serious losses.
It is customary to recharge these model-aircraft packs in a brick/concrete bunker or a steel ex-gov't ammo-box lined with sandbags!
IMHO the technology is still too unstable for such a mission-critical application as a commercial aircraft.,,,In that situation, reliability and safety MUSt take precedence over space and weight-saving and the Lipo's heavy discharge potential.
The failure-rate IS very low, but once spontaneous combustion starts, there's NO practical way of stopping it. the offending cell/pack has to be removed to a safe area to burn itself out (like THERMITE, it doesn't need outside oxygen)
Anyone remember the spate of mobile-phone batteries getting"hot" not so long ago?....same technology.
