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From: isw on 29 Jul 2010 12:53 In article <m2mxtaiplu.fsf(a)revier.com>, Jochem Huhmann <joh(a)gmx.net> wrote: > dorayme <dorayme(a)optusnet.com.au> writes: > > > I use it a bit with power still attached. But I grab it now and > > then to take it elsewhere, almost never draining the battery much > > for the short sessions and plonk it back on the desk with power > > to it. The green light is on it most of the time. > > > > To sum up, my machine is tending to be fully charged most of the > > time. Is this a good thing for the battery? Is fully draining and > > charging back up the most wearing activity for the battery? > > You should fully drain and recharge the battery about once a month to > calibrate it. If you never do this the charging circuitry may over- or > undercharge the battery. I think that information is wretchedly out of date. It may have been true for some battery chemistries at some time, but not with contemporary lithium-based chemistries or chargers. Isaac
From: Phillip Jones on 29 Jul 2010 13:08 isw wrote: > In article<CZ54o.42655$dx7.9216(a)newsfe21.iad>, > russotto(a)grace.speakeasy.net (Matthew Russotto) wrote: > > --snippety-snip -- > >> Typical lifetime of a lithium-ion battery is about 2 years > > I don't believe that for an instant, and my personal experience tells me > it's wrong, too -- more like four or five years, minimum (of course, > capacity declines over that time). > > Got any references to back up your claim? > > Isaac I am still using the same Battery in my PowerPC Powerbook 17" bought about 5-6 years ago and it still shows as 97-99% on the Battery meter. -- Phillip M. Jones, C.E.T. "If it's Fixed, Don't Break it" http://www.phillipmjones.net mailto:pjones1(a)kimbanet.com
From: dorayme on 29 Jul 2010 18:23 In article <i2scig$b70$2(a)news.eternal-september.org>, Phillip Jones <pjones1(a)kimbanet.com> wrote: > I am still using the same Battery in my PowerPC Powerbook 17" bought > about 5-6 years ago and it still shows as 97-99% on the Battery meter. 99% of what though? Is it really of the original charge of the battery when it was new and fully charged? Does it last as long as i used to when new? Is it the battery equivalent of The Magic Pudding? -- dorayme
From: dorayme on 29 Jul 2010 18:25 In article <isw-71A8C8.09535629072010@[216.168.3.50]>, isw <isw(a)witzend.com> wrote: > In article <m2mxtaiplu.fsf(a)revier.com>, Jochem Huhmann <joh(a)gmx.net> > wrote: > > > dorayme <dorayme(a)optusnet.com.au> writes: > > > > > I use it a bit with power still attached. But I grab it now and > > > then to take it elsewhere, almost never draining the battery much > > > for the short sessions and plonk it back on the desk with power > > > to it. The green light is on it most of the time. > > > > > > To sum up, my machine is tending to be fully charged most of the > > > time. Is this a good thing for the battery? Is fully draining and > > > charging back up the most wearing activity for the battery? > > > > You should fully drain and recharge the battery about once a month to > > calibrate it. If you never do this the charging circuitry may over- or > > undercharge the battery. > > I think that information is wretchedly out of date. It may have been > true for some battery chemistries at some time, but not with > contemporary lithium-based chemistries or chargers. > > Isaac What is a poor visitor to earth like me to believe? Don't say I have to make my own mind up! I hate doing that. -- dorayme
From: George Kerby on 29 Jul 2010 19:50
On 7/29/10 5:23 PM, in article dorayme-CCDF11.08232230072010(a)news.albasani.net, "dorayme" <dorayme(a)optusnet.com.au> wrote: > In article <i2scig$b70$2(a)news.eternal-september.org>, > Phillip Jones <pjones1(a)kimbanet.com> wrote: > >> I am still using the same Battery in my PowerPC Powerbook 17" bought >> about 5-6 years ago and it still shows as 97-99% on the Battery meter. > > 99% of what though? Is it really of the original charge of the > battery when it was new and fully charged? Does it last as long > as i used to when new? Is it the battery equivalent of The Magic > Pudding? coconutBattery will answer your questions. |