Synergy Batteries -- Can anyone comment?
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From: J. Clarke on 6 Jul 2010 21:15 On 7/6/2010 8:46 PM, John Navas wrote: > On Tue, 6 Jul 2010 20:39:12 -0400, in > <4c33cd03$0$5495$8f2e0ebb(a)news.shared-secrets.com>, "Peter" > <peternew(a)nospamoptonline.net> wrote: > >> "John Navas"<spamfilter1(a)navasgroup.com> wrote in message >> news:i1i7361boqd4vfbcbga95j8jdp2t7tdvfm(a)4ax.com... >>> On Tue, 06 Jul 2010 16:03:45 -0700, in >>> <4c33b646$0$22091$742ec2ed(a)news.sonic.net>, SMS >>> <scharf.steven(a)geemail.com> wrote: >>> >>>> On 06/07/10 3:17 PM, Robert Sneddon wrote: >>> >>>>> Still better than Li-chemistry cells with their high self-discharge >>>>> rate, >>>> >>>> Li-Ion and Li-Po packs are only a little worse than eneloops in terms of >>>> self-discharge. I.e. in 100 days, the eneloop cells will be around 90% >>>> and the Li-Ion will be at around 80%. ANiMH would be at around 10%. >>> >>> The self-discharge rate of Lithium-ion is actually much higher than >>> that, on the order of 8% per month at 21 degrees C*, but par for the >>> course with you. >> >> John, I concede. >> I strongly suspect you are an expert in self discharge. >> From your postings I have seen you do it frequently. >> <G> > > Bucking for a spot in the killfile? > A steady stream of ad hominem is the best way to get there. You threatening to put someone in your killfile is like Kate Beckinsale threatening to give somebody a BJ.
From: SMS on 6 Jul 2010 23:09 On 06/07/10 5:39 PM, Peter wrote: > "John Navas" <spamfilter1(a)navasgroup.com> wrote in message > news:i1i7361boqd4vfbcbga95j8jdp2t7tdvfm(a)4ax.com... >> On Tue, 06 Jul 2010 16:03:45 -0700, in >> <4c33b646$0$22091$742ec2ed(a)news.sonic.net>, SMS >> <scharf.steven(a)geemail.com> wrote: >> >>> On 06/07/10 3:17 PM, Robert Sneddon wrote: >> >>>> Still better than Li-chemistry cells with their high self-discharge >>>> rate, >>> >>> Li-Ion and Li-Po packs are only a little worse than eneloops in terms of >>> self-discharge. I.e. in 100 days, the eneloop cells will be around 90% >>> and the Li-Ion will be at around 80%. ANiMH would be at around 10%. >> >> The self-discharge rate of Lithium-ion is actually much higher than >> that, on the order of 8% per month at 21 degrees C*, but par for the >> course with you. >> > > > John, I concede. > I strongly suspect you are an expert in self discharge. > From your postings I have seen you do it frequently. > <G> LOL. Funny, but he's wrong as usual. The self-discharge rate of a Li-Ion cell is around 4% a month. In a laptop battery pack there is additional circuitry that consumes another 3% or so a month, but a Li-Ion camera battery pack (not the newer smart batteries with a CPU) consumes very little extra power from the internal protection circuitry. The thermal diode is not using any power when the battery is out of the camera.
From: Peter on 6 Jul 2010 23:23 "SMS" <scharf.steven(a)geemail.com> wrote in message news:4c33efe1$0$22140$742ec2ed(a)news.sonic.net... > On 06/07/10 5:39 PM, Peter wrote: >> "John Navas" <spamfilter1(a)navasgroup.com> wrote in message >> news:i1i7361boqd4vfbcbga95j8jdp2t7tdvfm(a)4ax.com... >>> On Tue, 06 Jul 2010 16:03:45 -0700, in >>> <4c33b646$0$22091$742ec2ed(a)news.sonic.net>, SMS >>> <scharf.steven(a)geemail.com> wrote: >>> >>>> On 06/07/10 3:17 PM, Robert Sneddon wrote: >>> >>>>> Still better than Li-chemistry cells with their high self-discharge >>>>> rate, >>>> >>>> Li-Ion and Li-Po packs are only a little worse than eneloops in terms >>>> of >>>> self-discharge. I.e. in 100 days, the eneloop cells will be around 90% >>>> and the Li-Ion will be at around 80%. ANiMH would be at around 10%. >>> >>> The self-discharge rate of Lithium-ion is actually much higher than >>> that, on the order of 8% per month at 21 degrees C*, but par for the >>> course with you. >>> >> >> >> John, I concede. >> I strongly suspect you are an expert in self discharge. >> From your postings I have seen you do it frequently. >> <G> > > LOL. Funny, but he's wrong as usual. The self-discharge rate of a Li-Ion > cell is around 4% a month. In a laptop battery pack there is additional > circuitry that consumes another 3% or so a month, but a Li-Ion camera > battery pack (not the newer smart batteries with a CPU) consumes very > little extra power from the internal protection circuitry. The thermal > diode is not using any power when the battery is out of the camera. whoosh -- Peter
From: John Navas on 7 Jul 2010 00:09 On Tue, 06 Jul 2010 20:09:31 -0700, in <4c33efe1$0$22140$742ec2ed(a)news.sonic.net>, SMS <scharf.steven(a)geemail.com> wrote: >On 06/07/10 5:39 PM, Peter wrote: >> "John Navas" <spamfilter1(a)navasgroup.com> wrote in message >> news:i1i7361boqd4vfbcbga95j8jdp2t7tdvfm(a)4ax.com... >>> The self-discharge rate of Lithium-ion is actually much higher than >>> that, on the order of 8% per month at 21 degrees C*, but par for the >>> course with you. >LOL. Funny, but he's wrong as usual. The self-discharge rate of a Li-Ion >cell is around 4% a month. In a laptop battery pack there is additional >circuitry that consumes another 3% or so a month, but a Li-Ion camera >battery pack (not the newer smart batteries with a CPU) consumes very >little extra power from the internal protection circuitry. The thermal >diode is not using any power when the battery is out of the camera. Nope. Wrong again. Additional authoritative source: <http://www.batterypoweronline.com/images/PDFs_articles_whitepaper_appros/Micro_Power_Cell_Selection_b.pdf> Li-Ion cells self-discharge at a rate of 10 % per month, and Lithium-polymer cells self-discharge at a similar rate. -- John "It is better to sit in silence and appear ignorant, than to open your mouth and remove all doubt." -Mark Twain "A little learning is a dangerous thing." -Alexander Pope "Being ignorant is not so much a shame, as being unwilling to learn." -Benjamin Franklin
From: ransley on 7 Jul 2010 07:07
On Jul 5, 7:25 pm, Joel Connor <myem...(a)myserver.com> wrote: > There's a new type of 1.25v AA battery on the market, using a Lithium > Polymer configuration (not unlike the flat-pack in my MP3 player, but at a > different voltage) marketed by a company name of Hahnel. > > A quick cursory search for reviews and discussions seem favorable. With > good low-temperature performance down to 23° F (-5° C), fast charging > times, etc. > > Anyone here ever use them and care to comment? > > Comments from the resident role-playing "x-spurts" that don't even own > cameras are not welcome. Don't worry, we already know who you are. Sanyo and panasonic are top commercial grade batteries, even Duracell and Everedy I trust since there is alot of cheap junk made. Sanyos newer Eneloops are proven , their second generation is out. 1.25v means nothing since 1.2v is not charged voltage of any Nicad or Nimh, charged voltage is about 1.36v. Try a pair, try a pair of the new Eneloops that you will know are quality and report back, my money is on Sanyo. My Eneloops are 07 and still fine |