On Wednesday 02 July 2003 09:55 am, Jeremy Derr wrote: > since the advent of the LiION battery, there's not as much you can > actually do to maximize your battery's life anymore. (comparatively > speaking - NiCad batteries are the other extreme). you can count on > several hundred charge cycles and/or a few years of use out of a LiION > battery. the best way to insure a long life is probably just to make > sure it doesn't stay empty for long. but, like all batteries, even a > LiION battery will only live so long. > > the rechargeable PMU battery is the same way, but doesn't -tend- to die > unless the machine is shelved and not plugged in for many many months > (say, 12-18 months). though it will eventually die even if used > consistently. > > if removing AC power is causing the time to reset in addition to > shutting off, i'm going to say it's probably -both- the backup battery > and the LiION battery.
OK here's the deal about that. If removing AC Power is causing the time to reset, you might need to just keep your PowerBook plugged in overnight to make sure the backup battery has enough "backup" to do its job. My Wallstreet PowerBook "WallyNavi" used to not be able to maintain PRAM info and it was like that for a long time. Apparently the friend I bought the PB from kept it in the closet for a while and didn't plug it in on a regular basis. Now that I use it on a regular basis, usually on AC power, it maintains the date just fine. Pull the battery and leave it off the battery for more than a couple of minutes, however, (like you do when you do an upgrade) and you will have to reset all the PRAM info. However, since I am running WallyNavi primarily on AC power, I wonder if I am not doing right by the batteries. Do LiIon batteries have a "memory effect" like NiCads and NiMH batteries do? Is it a good idea to give the battery a workout every month or so? The battery gives me a little under 2 3/4 hours of runtime as it is, and I want to keep it healthy for as long as possible. Any battery gurus are welcomed to chime in here. Thanks! :) -.\\<-H- (and WallyNavi) -- Michelle Klein-Hass Box 2273, Van Nuys, CA 91404-2273 Spam me and you pay! I'm in California! http://www.spamlaws.com/state/ca1.html Brought to you by Linux, KDE and KMail...try it, you'll like it! -- G-Books is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Check our web site for refurbished PowerBooks | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> G-Books list info: <http://lowendmac.com/lists/g-books.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/g-books%40mail.maclaunch.com/> --------------------------------------------------------------- >The Think Different Store http://www.ThinkDifferentStore.com ---------------------------------------------------------------
