On 3/19/02 5:07 AM, "(Duo/2400 List)" <[EMAIL PROTECTED]> wrote:
> Will a battery survive for more years in or out of an ac/dc powered > machine? > Donald McCaig To answer this question with a little more attention, OUT, but only in fully charged condition for storage, periodically recycled. Remember, battery charge/discharge is literally a reversible chemical reaction which incrementally declines in efficiency (completeness and purity) each time. Empirically, my batteries haven't suffered much by always being in a computer on external power with discharge usually confined to about 45 minutes of use. Lions supposedly have no memory effect. What has been affected by "top half" discharge is that the Control Strip time estimate algorithms, fall quickly from 55-65 minutes to 20-30 minutes (due to skewed early voltage drop off measurements) but still easily run 1.5 hours or more with minimal power conservation measures (because residual voltage is maintained longer at a somewhat lower level). I occasionally will run a deep discharge (during the normal course of usage) to fully exercise the battery a la NiCad practice. I've also had them out for up to 6-8 months, by accidentally leaving them in a foreign country or in the process of first discovering DEEP GLOD--without apparent ill effects. So if you have more than one good battery rotate them. If one is really good and the other very weak, keep the good one fully charged and stored but use it periodically. I would never be so extreme to remove all batteries just to "prolong" battery life--use'em but try not to abuse'em, like leaving them in closed cars in the summertime, or chronically discharged, or running mainly on batteries. ---------- 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>
