It would be good for fire detection there...NO--- i will not be placing that battery pack, under my butt
I only say that partly in jest (like everything else I say) but I too am on team Put the battery pack on the C.G. and have a means of ditching it in a hurry.. Maybe even have two packs in parallel side-by-side so you could keep half your power in an emergency. Off the top of my head I’d have a long orange streamer that unfurls behind the battery as it falls, both as a signal to those on the ground and to slow the descent a little bit.
I also believe pretty strongly in prevention which is why I’m comfortable with a solution as extreme as dropping a burning thing on people and their stuff. I’m not convinced that battery fires are a weird lottery, the LiPo troubles I’m familiar with (in radio controlled models, mind you) are the result of battery abuse whether it’s excessive charge or discharge rate and/or the pack has already been compromised from a previous impact, and those are probably the cheapest and least quality controlled batteries available. I would think if you take proper care of and monitor your batteries (and have the discipline to replace them if they go outside of limits) they ought to be extremely reliable. At least that’s the way I see it, thoughI admit I don’t have a horse in this race.