-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 03/12/2012 03:47 PM, Michael Cronenworth wrote: > Mikkel L. Ellertson wrote: >> It is not for conditioning the battery. It is to update the battery >> calibration. > > Most do this at boot so if Robert did a full power reset he should be fine. There is no need to run a utility or manually run the battery down. > > Older, Ni-Cad, laptops did have calibration utilities in their BIOS. No longer the case with Li-On. How do they calibrate on boot? I know they can read the battery status on boot, or battery change, but that is just getting a report from the circuit in the battery. The circuit in the battery needs a power cycle to recalibrate. Now, Ni-Cads did not have or need this circuit, as they have a predictable voltage curve, so you can check the status by checking the battery voltage. Lithium-Ion batteries do not experience a voltage drop until they are almost dead. So you can not determine the battery status by reading battery voltage. You have to ask the battery about its state. This circuit in the battery is the reason you have to go through extra steps when rebuilding a Li-Ion battery pack to get full performance. Some (most?) of the battery circuits remember the last battery curve even after removing the power. So you have to tell the chip to delete the saved battery state, and recalibrate for the new batteries. Mikkel - -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup! -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iEYEARECAAYFAk9eankACgkQqbQrVW3JyMRHewCbB8cpMo5PDd8leU127L2Ui0iu hr8Aniwvdai7aFsfpHPoHq9JzoCna3ql =pbJl -----END PGP SIGNATURE----- -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
