New Laptop Battery Recharge time

First Charge for use to help with the battery meter (to correctly state charge) is recommended by HP to be overnight. They advertise that the battery comes at 60% charge when you buy it.

For current Li-Ion battery technology a good rule of thumb is to get a full charge takes about X 2 the amount of battery life it give you meaning 2 hour battery life, charge for 4 hours. Another thing to keep in mind that at 50% charge time the batter is like 80% charged. The last bit of 20-30% charge capacity takes as long as the as the first 70-80%.

Also about every 20-30 uses or if the battery meter seems whacky/incorrect then recalibrate it with the HP utility or by turning off hibernation/standby at low battery and charging up the battery completely, pullling the AC and running it down completely till the notebook shuts off from a low battery, not the hibernation on low battery condition, then charge all the way back up.

The HP utility will do this all for you seemlessly while you can still use the notebook but you can not turn it off or unplug it until it is done doing its thing.

Other than for the battery meter utility there is no harm in partially charging or partially discharging versus full charge/discharge unlike the older Nickle based technology batteries so just charging for say 2 hours to get an 80% charge for use is fine. You don't have to wait till its 100%.

Now the 2 hour and 4 hour numbers are just ones I pulled out of my a$$e, well actually they are about right (+ or - an hour) for my old n400c, my ZT3000, and my IBM thinkpad at work. Each machine is different but these numbers are probably most common.
Here are some good articles to read

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LINK3

Larry-in-Eastba, is right, Depending on which battery you got with your system it may take 2x the battery life + upto 1 hour to charge.

I hear with the zd8000's that the life is about 1.5 hours so it should take 3 - 4 hours to charge or until the charge light goes off. BTW my charge light turns off exactly 30 minutes after windows reports 100% battery on my zd5240us...

Hi Larry-in-eastba,
really helpfull guesses;

So, if i have understood:
-short discharging/charging;(above all discharging; full charge is not a problem,isn't it?)
-every 30 charges: discharge completely the batttery, running it down until the lap shuts off (turning off hibernation/stand by), then charge completely the battery (2X the battery life time) and use it for others 30 charges (avoiding full discharging).
-when the lap is plugged into main, it's better to remove the battery
Q: But in this case, is it better to remove the battery not fully charged or ,for so short period, is it ininfluent?

I'm asking this cause i read the following post:

"The philosophy behind removing the battery when on mains power is:

When the notebook is plugged into mains, the electricity charges the battery while the battery powers the computer. When the battery is full, the mains keeps pumping power into the battery as the P.C is using it, resulting in constantly charging the battery. A Li-ion batery is designed for roughly 'so'many charges, leaving the battery in while running on mains results in many extra 'charges'
The only lap-top which automatically by-passes the battery when fully charged on mains is the IBM T42/T43 notebooks"

Last Q: When the notebook is turned off for two, three days, is it better to remove the battery from it (charged at 40% as recommended for storage)?

Best regards,
CPZ