On Sunday 30 March 2008, Joerg Wunsch wrote: > I don't really understand why the danger of LiIon and LiPo cells is > often exaggerated. Yes, they can burn when being handled improperly. > But about any kind of battery with enough stored energy in it is > dangerous, in one way or another. Your 44 Ah car battery is probably > much more dangerous than an 800 mA LiIon cell. It contains lead acid, > and its stored energy can easily arrange for an explosion if you > shortcut the battery e.g. by dropping a tool onto it that doesn't > evaporize within a few hundred milliseconds. Yet, nobody talks about > banning lead acid batteries...
I don't think I was exaggerating the dangers. And I do agree that LiIon batteries are safe in cellphones and laptops. LiIon batteries are more dangerous than other types for two reasons - LiIon's are less forgiving of mishandling, and they are MUCH more flammable than other types. Of course any battery can start a fire, but other batteries do not themselves burn so much. So, the main message is to be careful - don't abuse LiIon batteries, and keep them in a fireproof container if there's any question about the battery. Remember the OP was talking about using a used battery from an unknown source. Not every engineer knows about the special properties of these batteries, and learning by experience is costly. Blake _______________________________________________ AVR-chat mailing list AVR-chat@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-chat
