pwm2 wrote in post #16309515
You can never
just connect multiple Li-Ion batteries in parallell with each other - then there are no current limiter that will stop the stronger battery from trying to charge the other battery like crazy.
But in this case, it isn't two batteries connected together.
I am not a guru on a topic nor I pretend to be one, but I do know that explosions in question were of flashlights that use multiple LiIon batteries and that were designed to use multiple batteries by the manufacturer. Those interested on finding out more can check CandleLighForums for start. From what I have seen explosions were rather violent. I might be wrong on whether it would make a difference here but bottom line is that because of what I have seen I never use flashlights or anything else that uses multiple LiIon batteries, I am walking around them in big arch and use only ones with single LiIon or ones with multiple NiMh.