Fw:Notebook Battery...

[Peter]

On Sat, 23 Jul 2005, Francois Ouellette wrote:

>> five seconds with Google yielded this:
>>
>> http://h18000.www1.hp.com/products/quickspecs/12257_na/12257_na.html
>>
>> notice 'charges and *calibrates*' the battery. The Google search key
>> was:
>>
>> laptop battery charge indicator calibration
>>
>> good luck,
>> Peter
>
> I wonder what "calibrate" really means here, upwards? downwards? what is the
> reference?

There are 2 references: fully loaded and empty. Also advanced battery 
gauges will compute a piecewise approximation of the discharge graph for 
various currents and show the correct indication and an estimate of time 
left at the current load. The calibration is autmatic but it must be 
started somehow. Most laptops I have seen have this in the BIOS or as a 
manufacturer's utility. The manufacturers clearly say to do this 
(calibrate) once every few months.

Peter
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