posted on Jan, 15 2013 @ 12:23 AM
reply to post by Zaphod58
The bad thing here is, LiIon is considered to be pretty stable. It's TOUGH to screw up lithium ion.
Li-poly, that's brutal. Easy to set off. But most Li-Ion cells are hard to make fail quite THAT badly. We've designed Li-ion packs into military
equipment with way over 100WH capacity that have never failed in any way (other than to auger them in intentionally when you need that last tiny bit
of time). And by 'designed in', I mean we designed the battery manager, the pack, the charger, the whole thing.
I've gotten the cells to swell, to fail, to just quit working. With some physical abuse, you can get them to smoke. A nail can be exciting. But to
blow a battery up like that is tough. Maybe they weren't rated for the vibration/impact they're being subjected to and it caused an internal physical
short. Or maybe the charging circuit is badly designed. Really badly designed.
edit to add:
We did have to work with a piece of equipment with a big battery pack that was so mechanically sensitive, if you tossed it on the bench it would burst
into flames. The thing had a bad mechanical design that allowed some metal parts inside to shift and contact two bare tabs on a connector. We put out
a notice that in the event of abduction, you could consider popping the pack out and throwing it at your kidnappers as a value-added self defense
edit on 15-1-2013 by Bedlam because: (no reason given)