[Nottingham] Laptop battery lifecycle

[James Gibbon]

Graeme Fowler wrote:

> It's good practice to completely drain laptop batteries (as near
> as is possible) once in a while, and then fully charge them with
> the system offline.

This is an excellent idea for NiCad and (less so) for NiMH, 
but a very bad idea for lithium batteries - it will shorten 
the life of the battery considerably if you do it a few times.

Note that a great many modern laptop batteries are lithium.

James