> You might be able to put some new life into your old laptop batteries by
> discharging them completely then charging then again a couple of times but 
> if
> your laptop shuts off immediately on switching the power off then I fear 
> that
> they are goosed.

Don't you need to maintain a minimum level of battery power in a Li-Ion in 
order to stop it completely killing itself?  I believe if you drain one 
completely then you might as well just chuck it in the bin.  Maybe this 
happened somehow due to a bad battery control circuit in the laptop?

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