I read several stories about exploding batteries or batteries that catch fire. You can even buy anti-explosion bags. Some people use a metal container like an ammunition cartridge. I charge them in house and sometimes when I am not in the neighborhood. Is that safe? In most cases the battery was defect (swollen) or mis-used (overcharged, shorted or high temperature). The P3 has a smart battery. I think the electronics should warrant proper charging and prevent damages. Has anyone ever experienced during normal usage that a P3 battery exploded or caught fire?