On Wednesday, July 02, 2003, at 07:58PM, Michelle Klein-Hass <[EMAIL PROTECTED]> wrote:
>> 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. this works --- sometimes. there are two reasons a backup battery will seem to "die". the first is that the computer was shelved for too long and it simply drained to oblivion. leaving the machine plugged in for 32-48 hours will almost always resolve this. usually in this case the powerbook won't boot at all while the battery is drained like this (this is not absolute - there are plenty of examples to the contrary). a backup battery can also die from simple old age -- this case is almost always irreversable. usually, though, this won't prevent the computer from booting, but rather just affects it's ability to preserve date & time. (once again, not absolute.) >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! :) there is negligible, if any, "memory effect" on LiION batteries. this was probably the biggest reason the industry moved away from nickel based batteries. the best way to ensure LiION battery health is to not stick it in a drawer and forget about it. LiION batteries that lose their charge through neglect like this will often never recover. -- 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 ---------------------------------------------------------------
