> >Our story continues... > > >I'm curious to see how Mad Dog and any other Duo experts can explain all >this. My own theory is that there is a) the charging circuit in both the Duo >and the Duo charger do not well handle the case of a terminally discharged >Type 3 and b) there is something about the batteries in a Type 3 which, when >extremely discharged, requires a lot of charging current for a long time >before a charge is even noted.
My guess is that you can slam the battery hard enough (like Andrew talks about "popping" cells) you can knock it into life. >Notes about the SuperCharger II- According to info on the bottom, the SC II >detects a fully charged battery using "negative delta-V" detection. (I >assume this means that it charges for as long as the battery's voltage keeps >increasing.) The trickle charge method is described as "timed pulse" and the >limiting factors are listed as time and temperature. > >I assume that, in the case of battery #1, the pulses eventually added up to >the point where a positive delta-v was noted and regular charging began. > >It should be noted that this is all about Type 3 Duo batteries. As near as I >can tell, Type 1 and 2s are fairly conventional and work as one would >expect, losing capacity over time, but always holding a "charge". > >Comments... ><<<John>>> This is good news. Mad Dog ---------- Duo/2400 List, The friendliest place on the Net! A listserv for users and fans of Mac subportables. FAQ at <http://www.themacintoshguy.com/lists/DuoListFAQ.shtml> Be sure to visit Mac2400! <http://www.sineware.com/mac2400> To unsubscribe, E-mail to: <[EMAIL PROTECTED]> To switch to the DIGEST mode, E-mail to <[EMAIL PROTECTED]> Need help from a real person? Try. <[EMAIL PROTECTED]> ---------- Dr. Bott | 10/100 Ethernet for your 2400 is finally here! MPC-100 | <http://www.drbott.com/prod/mpc100.html> RoadTools $30 PodiumPad available at Apple retail stores, $20 Traveler CoolPad at Staples. Both in white for iBooks at <http://roadtools.com> Midwest Mac Parts ][ <http://www.midwestmac.com> After-market parts for Macs. ][ 888-356-1104 ][ MacResQ Specials: LaCie SCSI CDR From $99! PowerBook 3400/200 Only $879! Norton AntiVirus 6 Only $19! We Stock PARTS! <http://www.macresq.com>
