[Thinkpad] TP600 Battery Pack problem

[Jonathan Graham]

> The problem is that Li-Ion batteries do indeed get nasty, as
> Steve said.  I have seen a piece of ham-radio equipment that
> had what I think was called a "Mollie cell" in it, an early type
> of Lithim battery.  They shorted; they were in a hand-held
> radio, and the battery case got so hot that not only did it
> melt, but the bottom of the radio (sitting atop the battery
> case) was deformed from the heat.  There is a really
> incredible amount of energy in a Lithium battery, and you
> *don't* want it going off...

Keep in mind that Lion cells have no free lithium in them.  "Going off" due
to overcharging means heating up and venting oxygen...and possibly igniting.
Not taking out a car or a hotel room.  The last production unit I heard of
doing this was a PB5300.