[Gllug] Thinkpad T20

[John Winters]

john gennard wrote:
[snip]
> a. IBM's web site says:-
> 
>     Battery life: 3 hours without recharge (I get that!)
> 
>     Charge Time: System operational: 6 hours maximum
>                  Power off: 2.5 hours maximum
>                     (That I don't get)

I would read that as meaning that the battery will take longer to charge 
if you're using the machine than if it's switched off whilst the battery 
charges.  Presumably the charger provides only so much current which can 
either be split between running the machine and charging the battery 
(producing the longer charge time) or solely devoted to charging the 
battery (producing the shorter charge time).

> b. If I'm going to use this thing as intended, I presume I
>     will have to use two batteries - one in use and a
>     spare already charged. What do most people do. Are
>     there standalone mains battery chargers?

I've had a laptop with two batteries, but I've never had a separate 
charger.  In the case of mine, you could have either one battery and a 
CD drive or two batteries.

If you needed to arrange for the maximum possible run time and your 
machine doesn't support two simultaneous batteries then presumably you 
could charge them up sequentially in the machine, then use them in the 
same way.

HTH
John
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