Date: Sun, 1 Dec 2002 16:42:15 +0000 From: barnacle <[EMAIL PROTECTED]> Subject: Re: [LIB] Problem charging
On Sunday 01 Dec 2002 3:56 pm, you wrote: > Date: Sun, 01 Dec 2002 10:36:25 -0500 > From: Pres Waterman <[EMAIL PROTECTED]> > Subject: Re: [LIB] Problem charging > Anyone know how smart the battery is, vs. the internal battery monitors in > the computer? It is my understanding that it's the batterypack itself that reports both a percentage and a time to live calculation (noted from http://www.semtech.com/pdf/insmart.pdf and http://www.sbs-forum.org/specs/sbdata10_a.pdf ) but it's complex - a quick glance through the spec at .../sbdata10_a.pdf suggests that the battery can report its discharge rate in mA/mAh or mW/mWh, but to report how long it's going to last, it has to be told how fast it's emptying - i.e. the bios (or w2k or linux) speaks to the battery to see what's going on, tells the battery how long it's been running, and the battery says, ah, 73%, that's forty minutes left. Then a bit higher up the chain, the data from the battery is formatted into something useful - either, say, text in /proc/apm, or higher up as a hairy lightbulb popup or a time display in a button bar. Neil ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://www.silverace.com/libretto/ - Archives -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
