on 23/01/03 19:19, Andrew Johnson at [EMAIL PROTECTED] wrote: > Taken from http://www.motorola.com/ies/ESG/testlab/article1.htm: > > "Depth of discharge (DOD) is defined as the level to which battery > voltage is taken during discharge. For instance, 100 percent DOD means > that the battery voltage has been taken down to the lowest level > recommended by suppliers. Twenty percent DOD means that 20 percent of > the battery capacity has been removed. This level of DOD is often > referred to as a shallow discharge. Discharging to less than the > recommended voltage is known as overdischarge. The shallower the > discharge, the more cycles the battery will provide. This is true for > all battery chemistries. > > The relationship between DOD and cycle life is logarithmic. In other > words, the number of cycles yielded by a battery goes up exponentially > the lower the DOD. Research studies have shown that the typical > cellular phone user depletes their battery about 25 to 30 percent > before recharging. Testing has shown that at this low level of DOD a > lithium-ion battery can expect between 5 and 6 times the cycle numbers > of a battery discharged to the one hundred percent DOD level > continuously." > > In summary, using your Li-Ion battery for 5 minutes while moving > between outlets isn't going to adversely affect battery life.
Andrew, Thanks for the nice extract. That pretty much clears my question! -Laurent. -- ============================================================================ Laurent Daudelin AIM/iChat: LaurentDaudelin <http://nemesys.dyndns.org> Logiciels Nemesys Software mailto:[EMAIL PROTECTED] fiber-seeking backhoe: [common among backbone ISP personnel] Any of a genus of large, disruptive machines which routinely cut critical backbone links, creating Internet outages and packet over air problems. -- 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 ---------------------------------------------------------------
