Battery calibtrator for laptop?

[imported_Krypto]

Just wondering, because the BIOS doesn't have one and I was wondering if someone knew of a program that would calibrate it or something like that.

 

[amdskip]

Calibrate it for what?

 

[imported_Krypto]

Well, in my BIOS on my gateway, there is a calibration tool that runs the battery completely dead so it can calibrate an accurate timeframe for windows to use for it's meter. Does that make sense haha?

 

[amdskip]

I wouldn't worry about it.

 

[corkyg]

Yes, it makes sense. Some Gateways have a battery "gas gauge" on the bottom. Those that do, have a BIOS function called "Calibrate Gas Gauge."

What it does is calibrate the accuracy of that indicator with the actual state of the battery. It does so by the following procedure:

1. Fully charge the battery - laptop off
2. Power on - go to BIOS and execute that calibration function. Pull the A/C connector.
3. The laptop will run until the battery is fully exhausted.
4. Power up fully, and reboot. The battery gauge is now calibrated.

Newer Li-ION batteries do not require this calibration, and it is debatable as to whether or not there is any value in doing this.

Some older laptops such as WinBook and Twinhead require calibration periodically to maintain battery conditioning. This was normally with the old NiMH batteries.

In my new HP Pavilion, there is a proocedure for calibrating the Windows Power Meter gauge. The procedure can be downloaded from HP's support web site. Basically, it is done from within Windows.

1. Start with a fully charged battery on A/C in Windows.

2. Disable/turn off all power svaing choices, hibernation, standby, etc.

3. Run something until the laptop stops and is dead.

4. Connect the A/C power and fully charge the battery.

5. Reboot on A/C and restore your power saving choices.

The battery gauge in the power meter is then calibrated to give a correct value.