Re: Rechargeable batteries and chargers
I find the Energizer rechargeables to be terrible at holding a charge. (I've tried some Duracells, too, but they appear to be even worse). They're so bad that I too switched to using Energizer Lithiums, but that brings its own set of problems. In my *ist D the initial drain when I first switch the camera on after three days of non-use is so high that the battery voltage drops, causing the *ist D to register 'half power'. I also get that indication (and, in some cases, the 'low battery' indicator) quite often during shooting sessions. I rarely had those kind of problems when I was using my old Ray-O-Vac rechargeables (although in those days I had the battery grip mounted, with batteries in it and in the camera), so when about ten days ago I saw 2500mAh Ray-O-Vacs in the local hardware store I picked up a set to try them out. So far they have been problem free, so I may well pick up another pack or two and switch back to rechargeables. You must have a bad cell in your set of Energizers. I've been using a set of 2500's very happily now... a few hundred shots from them a month after charging them. I've got a LaCrosse BC-900 charger so I can cycle them and see how much they *actually* provide. Highly recommended. One set of 4 batteries I bought had 3 good, and 1 that would only get up to about 1/2 the capacity of others... even after a number of charge/discharge cycles to bring them up. Must be bad quality control on that one. -Cory -- * * Cory Papenfuss, Ph.D., PPSEL-IA * * Electrical Engineering* * Virginia Polytechnic Institute and State University * * -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: was Re: Rechargeable batteries and chargers
Derby Chang wrote: Derby Chang wrote: Roman Melihhov wrote: I'm using 2 CR-V3 Li rechargeables in my K100D Super and Albinar cherger for 1 battery, so I charge them in sequence and they stay charged when unused. That's one good thing about them. Although they last longer too I'd noticed Li batteries tend to die fast when camera indicate half the charge or less. Just my 2¢... Roman, I am pretty sure I remember Pentax recommending lithium rechargeables *not* be used in the *ist DS, and presumably that applies for all of the other AA-type cameras as well. They work, but the higher current output isn't healthy for the AF motor IIRC. Another vote for me for the Eneloops in my *ist DS, since I don't use it much. It is nice to know the charge will be there when I want to use it occasionally. D Checking my facts again, the Pentax manuals state which types of batteries can be used (of which lithium rechargeables are not included). Here is a pretty detailed explanation why, not from Pentax, but a very clear nonetheless. Now consider a 4.8-6V circuit divided into 1.2-1.5V, typical 4x AA, or even 2x CR-V3 (Li-Mn). You'll probably be fine with slight variances in your AA like 1.6V that even push it up to 6.4V total. Now consider using 2x RCR-V3 (Li-Ion), which is chemically impossible of delivering anything less than 6V, and has a nominal operation of 7.2V! That's 1.8V. And if you take it off the charger, and it's not clamped, it could be as over 8V high as 8.4V total, a whopping 2.1V divided! http://thebs413.blogspot.com/2007/07/li-ion-is-not-lithium-eg-li-mn-li-fe.html D All of which goes to say it's the higher *voltage* that's the possible harm-causing culprit, not the current. Put a higher voltage battery in, and the current becomes higher. Current isn't delivered per se, voltage is. Current 'happens', as a function of the resistance the load presents, up to the limit the supply is capable of delivering. Remember I = E/R ? If the load resistance (R) stays the same, and the voltage (E) rises, the current (I) also rises. In simple DC circuits, control current by adjusting and controlling the voltage impressed on the load. IMMHO, keith whaley -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: was Re: Rechargeable batteries and chargers
On Sun, 30 Dec 2007 15:59:04 -0800 keith_w [EMAIL PROTECTED] wrote: Derby Chang wrote: Derby Chang wrote: Roman Melihhov wrote: I'm using 2 CR-V3 Li rechargeables in my K100D Super and Albinar cherger for 1 battery, so I charge them in sequence and they stay charged when unused. That's one good thing about them. Although they last longer too I'd noticed Li batteries tend to die fast when camera indicate half the charge or less. Just my 2¢... Roman, I am pretty sure I remember Pentax recommending lithium rechargeables *not* be used in the *ist DS, and presumably that applies for all of the other AA-type cameras as well. They work, but the higher current output isn't healthy for the AF motor IIRC. Another vote for me for the Eneloops in my *ist DS, since I don't use it much. It is nice to know the charge will be there when I want to use it occasionally. D Checking my facts again, the Pentax manuals state which types of batteries can be used (of which lithium rechargeables are not included). Here is a pretty detailed explanation why, not from Pentax, but a very clear nonetheless. Now consider a 4.8-6V circuit divided into 1.2-1.5V, typical 4x AA, or even 2x CR-V3 (Li-Mn). You'll probably be fine with slight variances in your AA like 1.6V that even push it up to 6.4V total. Now consider using 2x RCR-V3 (Li-Ion), which is chemically impossible of delivering anything less than 6V, and has a nominal operation of 7.2V! That's 1.8V. And if you take it off the charger, and it's not clamped, it could be as over 8V high as 8.4V total, a whopping 2.1V divided! http://thebs413.blogspot.com/2007/07/li-ion-is-not-lithium-eg-li-mn-li-fe.html D All of which goes to say it's the higher *voltage* that's the possible harm-causing culprit, not the current. Put a higher voltage battery in, and the current becomes higher. Not really true. Infact it will be the oposite. Higher voltage means less current. Current isn't delivered per se, voltage is. Current 'happens', as a function of the resistance the load presents, up to the limit the supply is capable of delivering. Remember I = E/R ? If the load resistance (R) stays the same, and the voltage (E) rises, the current (I) also rises. In simple DC circuits, control current by adjusting and controlling the voltage impressed on the load. Your forgetting the fact that no modern circut is without its own dc-dc converter of some sort. Some with more input voltage range than others. Without it, you simple cannot pull all the power from the battery. This is why damage can occur. Running a dc-dc converter at the edges of its range constantly damages them eventually, unless said dc-dc converter is designed for this. IMMHO, keith whaley -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Ben 'Polyhead' Smith KE7GAL -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: was Re: Rechargeable batteries and chargers
Derby, there's apparently a few 3V Lithium rechargables out there. These will be safe, the 3.6V ones won't. -Adam On 12/28/07, Derby Chang [EMAIL PROTECTED] wrote: Derby Chang wrote: Roman Melihhov wrote: I'm using 2 CR-V3 Li rechargeables in my K100D Super and Albinar cherger for 1 battery, so I charge them in sequence and they stay charged when unused. That's one good thing about them. Although they last longer too I'd noticed Li batteries tend to die fast when camera indicate half the charge or less. Just my 2¢... Roman, I am pretty sure I remember Pentax recommending lithium rechargeables *not* be used in the *ist DS, and presumably that applies for all of the other AA-type cameras as well. They work, but the higher current output isn't healthy for the AF motor IIRC. Another vote for me for the Eneloops in my *ist DS, since I don't use it much. It is nice to know the charge will be there when I want to use it occasionally. D Checking my facts again, the Pentax manuals state which types of batteries can be used (of which lithium rechargeables are not included). Here is a pretty detailed explanation why, not from Pentax, but a very clear nonetheless. Now consider a 4.8-6V circuit divided into 1.2-1.5V, typical 4x AA, or even 2x CR-V3 (Li-Mn). You'll probably be fine with slight variances in your AA like 1.6V that even push it up to 6.4V total. Now consider using 2x RCR-V3 (Li-Ion), which is chemically impossible of delivering anything less than 6V, and has a nominal operation of 7.2V! That's 1.8V. And if you take it off the charger, and it's not clamped, it could be as over 8V high as 8.4V total, a whopping 2.1V divided! http://thebs413.blogspot.com/2007/07/li-ion-is-not-lithium-eg-li-mn-li-fe.html D -- [EMAIL PROTECTED] http://members.iinet.net.au/~derbyc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- M. Adam Maas http://www.mawz.ca Explorations of the City Around Us. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: was Re: Rechargeable batteries and chargers (P. J. Alling)
Roman Melihhov wrote: I'm using 2 CR-V3 Li rechargeables in my K100D Super and Albinar cherger for 1 battery, so I charge them in sequence and they stay charged when unused. That's one good thing about them. Although they last longer too I'd noticed Li batteries tend to die fast when camera indicate half the charge or less. Just my 2¢... Roman, I am pretty sure I remember Pentax recommending lithium rechargeables *not* be used in the *ist DS, and presumably that applies for all of the other AA-type cameras as well. They work, but the higher current output isn't healthy for the AF motor IIRC. Another vote for me for the Eneloops in my *ist DS, since I don't use it much. It is nice to know the charge will be there when I want to use it occasionally. D -- [EMAIL PROTECTED] http://members.iinet.net.au/~derbyc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: was Re: Rechargeable batteries and chargers
Derby Chang wrote: Roman Melihhov wrote: I'm using 2 CR-V3 Li rechargeables in my K100D Super and Albinar cherger for 1 battery, so I charge them in sequence and they stay charged when unused. That's one good thing about them. Although they last longer too I'd noticed Li batteries tend to die fast when camera indicate half the charge or less. Just my 2¢... Roman, I am pretty sure I remember Pentax recommending lithium rechargeables *not* be used in the *ist DS, and presumably that applies for all of the other AA-type cameras as well. They work, but the higher current output isn't healthy for the AF motor IIRC. Another vote for me for the Eneloops in my *ist DS, since I don't use it much. It is nice to know the charge will be there when I want to use it occasionally. D Checking my facts again, the Pentax manuals state which types of batteries can be used (of which lithium rechargeables are not included). Here is a pretty detailed explanation why, not from Pentax, but a very clear nonetheless. Now consider a 4.8-6V circuit divided into 1.2-1.5V, typical 4x AA, or even 2x CR-V3 (Li-Mn). You'll probably be fine with slight variances in your AA like 1.6V that even push it up to 6.4V total. Now consider using 2x RCR-V3 (Li-Ion), which is chemically impossible of delivering anything less than 6V, and has a nominal operation of 7.2V! That's 1.8V. And if you take it off the charger, and it's not clamped, it could be as over 8V high as 8.4V total, a whopping 2.1V divided! http://thebs413.blogspot.com/2007/07/li-ion-is-not-lithium-eg-li-mn-li-fe.html D -- [EMAIL PROTECTED] http://members.iinet.net.au/~derbyc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
Using a mix of Duracell 2650mAh Sony 2500mAh batteries charged in a Sony 15 minute quick charger or an old Energizer slow charger. -Adam On 12/25/07, Scott Loveless [EMAIL PROTECTED] wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I know we've been over this before, but I'm too lazy to dig through the archives. Merry Christmzs anf a hwppu nwe uwsr, -- Scott (lightly malted) Loveless http://www.twosixteen.com/fivetoedsloth/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- M. Adam Maas http://www.mawz.ca Explorations of the City Around Us. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
was Re: Rechargeable batteries and chargers (P. J. Alling)
I'm using 2 CR-V3 Li rechargeables in my K100D Super and Albinar cherger for 1 battery, so I charge them in sequence and they stay charged when unused. That's one good thing about them. Although they last longer too I'd noticed Li batteries tend to die fast when camera indicate half the charge or less. Just my 2¢... -- rebirth of the kool one roman.blakout.net http://roman.blakout.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: was Re: Rechargeable batteries and chargers (P. J. Alling)
On Wed, 26 Dec 2007 11:03:09 +0200 Roman Melihhov [EMAIL PROTECTED] wrote: I'm using 2 CR-V3 Li rechargeables in my K100D Super and Albinar cherger for 1 battery, so I charge them in sequence and they stay charged when unused. That's one good thing about them. Although they last longer too I'd noticed Li batteries tend to die fast when camera indicate half the charge or less. Just my 2¢... Thats because of the voltage curve of a LithiuhmIon/Lithium Polymer Cell. I cell will typically produce a peak voltage of 3.6 volts, but not be considered discharged till around 1.6 volts. Most devices will NEVER drain a lithiumXXX rechargable cell unless they are designed specifically for them, OR, there is a DC-DC converter inside the battery pack. LithiumX rechargables just are not a suitable drop in replacment. FYI.. u mm, 2 cr-v3 Lithium batteries are not rechargable. I'm not sure where you are getting that lithium batteries are rechargable. :/ I suspect you mean lithium ion, and yea, a drop in system would not work out very well. -- rebirth of the kool one roman.blakout.net http://roman.blakout.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Ben 'Polyhead' Smith KE7GAL -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
On Dec 26, 2007 12:33 AM, Boris Liberman [EMAIL PROTECTED] wrote: I use the following: 1. GP 2700 MAh for my wireless mouse (used to be for my *istD and the flash). I used to look after the equipment at my old work, and many of the employee's used wireless mices. We went through a truck load of throw away AA's but they would never concider buying a big pack of re chargable's and a couple of wall chargers. They had a save the pennies and spend the dollars out look Dave 2. Sanyo Eneloop 2000 MAh for my flash (they last forever in storage) 3. LaCrosse BC-900 charger - really excellent machine. Cheers. Boris Scott Loveless wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I know we've been over this before, but I'm too lazy to dig through the archives. Merry Christmzs anf a hwppu nwe uwsr, -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Equine Photography www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ Ontario Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
I used Duracell 2100 or 2500. Not sure as i cannot find on at the moment. They were ok in the istD, i got around 250-300 shots. I went back to the Liths for double the amount of shots. Dave On Dec 26, 2007 2:52 AM, Adam Maas [EMAIL PROTECTED] wrote: Using a mix of Duracell 2650mAh Sony 2500mAh batteries charged in a Sony 15 minute quick charger or an old Energizer slow charger. -Adam On 12/25/07, Scott Loveless [EMAIL PROTECTED] wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I know we've been over this before, but I'm too lazy to dig through the archives. Merry Christmzs anf a hwppu nwe uwsr, -- Scott (lightly malted) Loveless http://www.twosixteen.com/fivetoedsloth/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- M. Adam Maas http://www.mawz.ca Explorations of the City Around Us. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Equine Photography www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ Ontario Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
Scott Loveless escribió: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I use GP 2500 mAH AA batteries for my flashes and also Sanyo Eneloop in my *ist DS. Both of them are good but the Eneloops are the best rechargeable batteries I've ever used. The charger I have is a GP Power Bank U-Smart (a fast charger). Carlos -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
Scott Loveless escribió: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I have the two sets of the Power2000 2400mAh AA NiMH batteries with rapid charger that I bought with the *ist DS body at the beginning of 2005. I use them in my flash unit and in my wireless keyboard and mouse now. They have always worked flawlessly. In the DS bodies, they regularly turned 600-700 exposures per charge. I have yet to exhaust a set from a fresh charge in the flash unit, but I only rarely use the flash unit for more than a couple dozen exposures at a session. Godfrey -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
I never had much luck with Nimh batteries in my D or my flashes until Rob mentioned the La Crosse charger. It charges each cell individually, so each reaches peak voltage. It also can be used to discharge and to cycle/refresh the batteries. I use it with 1200 Sony batteries for my flashes, and they perform beautifully. In my D, which is rarely in service, I use the long shelf life lithiums. No hassle. Here''s the charger. It's on sale at Amazon: http:// www.amazon.com/Crosse-Technology-BC-900-AlphaPower-Battery/dp/ B00077AA5Q/ref=pd_bbs_3?ie=UTF8s=home-gardenqid=1198691173sr=8-3 On Dec 26, 2007, at 10:22 AM, Godfrey DiGiorgi wrote: Scott Loveless escribió: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I have the two sets of the Power2000 2400mAh AA NiMH batteries with rapid charger that I bought with the *ist DS body at the beginning of 2005. I use them in my flash unit and in my wireless keyboard and mouse now. They have always worked flawlessly. In the DS bodies, they regularly turned 600-700 exposures per charge. I have yet to exhaust a set from a fresh charge in the flash unit, but I only rarely use the flash unit for more than a couple dozen exposures at a session. Godfrey -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
Eneloop. I won't buy any normal NiMH anymore, they loose charge very quickly. I have seen other Eneloop type NiMH (If the package claims they are allready charged in the factory). On Dec 26, 2007 3:55 AM, Scott Loveless [EMAIL PROTECTED] wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I know we've been over this before, but I'm too lazy to dig through the archives. Merry Christmzs anf a hwppu nwe uwsr, -- Scott (lightly malted) Loveless http://www.twosixteen.com/fivetoedsloth/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Toine http://www.repiuk.nl -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
Another vote for eneloops and another for an individual cell charger. Since I changed from energisers to eneloops I am a much happier camper. ' Alastair On Dec 26, 2007 3:55 PM, Scott Loveless [EMAIL PROTECTED] wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I know we've been over this before, but I'm too lazy to dig through the archives. Merry Christmzs anf a hwppu nwe uwsr, -- Scott (lightly malted) Loveless http://www.twosixteen.com/fivetoedsloth/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Rechargeable batteries and chargers
Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I know we've been over this before, but I'm too lazy to dig through the archives. Merry Christmzs anf a hwppu nwe uwsr, -- Scott (lightly malted) Loveless http://www.twosixteen.com/fivetoedsloth/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
On 12/25/07, Scott Loveless [EMAIL PROTECTED] wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I was running some of the Energizer NiMH batteries in my DS2, with a small wall charger that came with them. I got sick of them self-discharging when the camera sat around, so I use the Energizer Lithium AA's now. For non-camera use, I'd make sure I charge them just before use, or if they've been sitting around awhile. They also don't work well in flash units, because of the slightly lower voltage than equivalent AA batteries. -Mat -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
On Tue, 25 Dec 2007 21:55:26 -0500 Scott Loveless [EMAIL PROTECTED] wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I've been using Energizer nickel metal hydride cells and their 15minute charger. It gets hot, damn hot... the cells seem to take it ok. I'm sure i'm losing electrolyte with every charge, but with as cheap as they are, if I get 50 cycles out of them, I'll be happy. However, don't waste your money on their c or d cells, they are just AA cells in an adapter case. Keep in mind, you want to top these cells off before you go do anything important, and probably charge them once ever 2 or 3 weeks weather you have used them or not. The self discharge rate of NIMH is pretty high. I think at some point i'm going to get an RC-car / airplane charger, one of the programable units, and charge that way. I know we've been over this before, but I'm too lazy to dig through the archives. Merry Christmzs anf a hwppu nwe uwsr, -- Scott (lightly malted) Loveless http://www.twosixteen.com/fivetoedsloth/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Ben 'Polyhead' Smith KE7GAL -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
Interesting my results are much different. But then I keep to a charging regimen. Mat Maessen wrote: On 12/25/07, Scott Loveless [EMAIL PROTECTED] wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I was running some of the Energizer NiMH batteries in my DS2, with a small wall charger that came with them. I got sick of them self-discharging when the camera sat around, so I use the Energizer Lithium AA's now. For non-camera use, I'd make sure I charge them just before use, or if they've been sitting around awhile. They also don't work well in flash units, because of the slightly lower voltage than equivalent AA batteries. -Mat -- I am personally a member of the Cream of the Illuminati. A union with the Bavarian Illuminati is contemplated. When it is complete the Bavarian Cream Illuminati will rule the world -- Anonymous -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
The Eneloops are very good at holding a charge over a long period of time. They are around 2200 amphr or maybe a little more. The price has been droping on them lately and are around 10.00 per set of 4, maybe less. Any Nickle Metal Hydride charger will work with them I believe. At least the one I have does. I have used the batteries with my DL and the Sigma flash unit and like the performance in both. Walt On 12/25/07, Scott Loveless [EMAIL PROTECTED] wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I know we've been over this before, but I'm too lazy to dig through the archives. Merry Christmzs anf a hwppu nwe uwsr, -- Scott (lightly malted) Loveless http://www.twosixteen.com/fivetoedsloth/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
Energizer Rechargeable NiMH 2500 mAh batteries. They're fairly inexpensive if you buy them at a warehouse club like Sam's. I use the charger that comes with them in the combination pack, (eight AA four AA and the 8 hour charger). They last about two weeks between charges or abut 5-6 hundred images if used heavily. I have four sets and two chargers which all told cost me less than $40l.00, (but I have two DSLRs that take AA batteries so that seems reasonable). I replaced eight of the batteries after two years because they got to the point that they wouldn't keep the Ds or D running for longer than a couple of hours on a full charge, but these still work fine in less power intensive/voltage consistent applications such as Electronic Flash units. I've been happy with the results Scott Loveless wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I know we've been over this before, but I'm too lazy to dig through the archives. Merry Christmzs anf a hwppu nwe uwsr, -- I am personally a member of the Cream of the Illuminati. A union with the Bavarian Illuminati is contemplated. When it is complete the Bavarian Cream Illuminati will rule the world -- Anonymous -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
Damn those batteries are expensive, that should be less than $40.00 not $401.00, if they could get that much for a set of AA batteries, I'd go into the battery importing business. P. J. Alling wrote: Energizer Rechargeable NiMH 2500 mAh batteries. They're fairly inexpensive if you buy them at a warehouse club like Sam's. I use the charger that comes with them in the combination pack, (eight AA four AA and the 8 hour charger). They last about two weeks between charges or abut 5-6 hundred images if used heavily. I have four sets and two chargers which all told cost me less than $40l.00, (but I have two DSLRs that take AA batteries so that seems reasonable). I replaced eight of the batteries after two years because they got to the point that they wouldn't keep the Ds or D running for longer than a couple of hours on a full charge, but these still work fine in less power intensive/voltage consistent applications such as Electronic Flash units. I've been happy with the results Scott Loveless wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I know we've been over this before, but I'm too lazy to dig through the archives. Merry Christmzs anf a hwppu nwe uwsr, -- I am personally a member of the Cream of the Illuminati. A union with the Bavarian Illuminati is contemplated. When it is complete the Bavarian Cream Illuminati will rule the world -- Anonymous -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
I was starting to wonder which Sam's Club saw you coming a mile away. P. J. Alling wrote: Damn those batteries are expensive, that should be less than $40.00 not $401.00, if they could get that much for a set of AA batteries, I'd go into the battery importing business. P. J. Alling wrote: Energizer Rechargeable NiMH 2500 mAh batteries. They're fairly inexpensive if you buy them at a warehouse club like Sam's. I use the charger that comes with them in the combination pack, (eight AA four AA and the 8 hour charger). They last about two weeks between charges or abut 5-6 hundred images if used heavily. I have four sets and two chargers which all told cost me less than $40l.00, (but I have two DSLRs that take AA batteries so that seems reasonable). I replaced eight of the batteries after two years because they got to the point that they wouldn't keep the Ds or D running for longer than a couple of hours on a full charge, but these still work fine in less power intensive/voltage consistent applications such as Electronic Flash units. I've been happy with the results Scott Loveless wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I know we've been over this before, but I'm too lazy to dig through the archives. Merry Christmzs anf a hwppu nwe uwsr, -- Scott Loveless http://www.twosixteen.com/fivetoedsloth/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
For non-camera use, I'd make sure I charge them just before use, or if they've been sitting around awhile. They also don't work well in flash units, because of the slightly lower voltage than equivalent AA batteries. Not true at all. The voltage going into a flash unit is pretty meaningless, as that will be stepped up by the triacs and such inside the strobe. They tend to charge faster, MUCH faster than alkelines. Why? good question, simple answer. Internal resistance. An alkaline battery at 1/4 discharged will already have close to 1 ohm of internal resistance. A NimH cell will top out at 1.2 ohms, and maintain less than .5ohm resistance down to about 80% discharged. The drop in voltage is negated by the much higher current a NimH cell will put out. Not buying me? Check out the manaul for the old Vivitar 283. (or any modern strobe, you usually find the same thing) The manual states that the recharge time is 11 seconds for Alkaline, but only 8 seconds for Nicad. Nicad and NimH have similar voltage curves, and therfore, similar voltages and voltage drop. So, with most strobes, you will get much better performance from Nicad or NimH or the new NioX stuff compared with alkelines. This is because of voltage drop. You may have available 1.5 volts, but say on a 4 cell strobe, y ou now have 4ohms of internal resistance (at best, near 80% discharge an alkeline will be as high as 4 ohms per cell), which means the voltage will drop big time! However, with a Nimh or Nicad, your only looking at 2ohms of internal resistance, so half the voltage drop! Charging a strobe has nothing to do with volts, its all about the amps. -Mat -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Ben 'Polyhead' Smith KE7GAL -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
I been using Duracell 2500 mah AA and also Energizer 2300 mah AA. Like them both seem to last long.. Joe At 09:55 PM 12/25/07, you wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I know we've been over this before, but I'm too lazy to dig through the archives. Merry Christmzs anf a hwppu nwe uwsr, -- Scott (lightly malted) Loveless http://www.twosixteen.com/fivetoedsloth/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
4 maybe 5 glasses of wine and I'm lucky that I can still type at all. Scott Loveless wrote: I was starting to wonder which Sam's Club saw you coming a mile away. P. J. Alling wrote: Damn those batteries are expensive, that should be less than $40.00 not $401.00, if they could get that much for a set of AA batteries, I'd go into the battery importing business. P. J. Alling wrote: Energizer Rechargeable NiMH 2500 mAh batteries. They're fairly inexpensive if you buy them at a warehouse club like Sam's. I use the charger that comes with them in the combination pack, (eight AA four AA and the 8 hour charger). They last about two weeks between charges or abut 5-6 hundred images if used heavily. I have four sets and two chargers which all told cost me less than $40l.00, (but I have two DSLRs that take AA batteries so that seems reasonable). I replaced eight of the batteries after two years because they got to the point that they wouldn't keep the Ds or D running for longer than a couple of hours on a full charge, but these still work fine in less power intensive/voltage consistent applications such as Electronic Flash units. I've been happy with the results Scott Loveless wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I know we've been over this before, but I'm too lazy to dig through the archives. Merry Christmzs anf a hwppu nwe uwsr, -- I am personally a member of the Cream of the Illuminati. A union with the Bavarian Illuminati is contemplated. When it is complete the Bavarian Cream Illuminati will rule the world -- Anonymous -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
On Tue, Dec 25, 2007 at 10:04:42PM -0500, Mat Maessen wrote: On 12/25/07, Scott Loveless [EMAIL PROTECTED] wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I was running some of the Energizer NiMH batteries in my DS2, with a small wall charger that came with them. I got sick of them self-discharging when the camera sat around, so I use the Energizer Lithium AA's now. I find the Energizer rechargeables to be terrible at holding a charge. (I've tried some Duracells, too, but they appear to be even worse). They're so bad that I too switched to using Energizer Lithiums, but that brings its own set of problems. In my *ist D the initial drain when I first switch the camera on after three days of non-use is so high that the battery voltage drops, causing the *ist D to register 'half power'. I also get that indication (and, in some cases, the 'low battery' indicator) quite often during shooting sessions. I rarely had those kind of problems when I was using my old Ray-O-Vac rechargeables (although in those days I had the battery grip mounted, with batteries in it and in the camera), so when about ten days ago I saw 2500mAh Ray-O-Vacs in the local hardware store I picked up a set to try them out. So far they have been problem free, so I may well pick up another pack or two and switch back to rechargeables. For a charger I use the Maha MH-C401. The important thing is to get a charger with individual charging circuits - the cheap ones that come with the batteries often only charge cells in pairs. I also always use the slow charge - it's better for the battery. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
I agree with Walt. I used several no name brands as well as Energisers and found them all unsatisfactory. I've been using the Eneloops for about 8 months and find them excellent in holding a charge. I'm about to order some more. I use the Energiser charger to re-charge them but have disposed of the Energiser batteries Cheers Brian ++ Brian Walters Western Sydney Australia http://members.westnet.com.au/brianwal/SL/ Quoting Walter Hamler [EMAIL PROTECTED]: The Eneloops are very good at holding a charge over a long period of time. They are around 2200 amphr or maybe a little more. The price has been droping on them lately and are around 10.00 per set of 4, maybe less. Any Nickle Metal Hydride charger will work with them I believe. At least the one I have does. I have used the batteries with my DL and the Sigma flash unit and like the performance in both. Walt On 12/25/07, Scott Loveless [EMAIL PROTECTED] wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I know we've been over this before, but I'm too lazy to dig through the archives. -- Find out how you can get spam free email. http://www.bluebottle.com/tag/3 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
I've been using Rayovacs their 15 minute charger, model PS6. Kenneth Waller http://www.tinyurl.com/272u2f - Original Message - From: Scott Loveless [EMAIL PROTECTED] Subject: Rechargeable batteries and chargers Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I know we've been over this before, but I'm too lazy to dig through the archives. Merry Christmzs anf a hwppu nwe uwsr, -- Scott (lightly malted) Loveless http://www.twosixteen.com/fivetoedsloth/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
RE: Rechargeable batteries and chargers
Energizer batteries and charger Bill -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ken Waller Sent: Tuesday, December 25, 2007 11:43 PM To: Pentax-Discuss Mail List Subject: Re: Rechargeable batteries and chargers I've been using Rayovacs their 15 minute charger, model PS6. Kenneth Waller http://www.tinyurl.com/272u2f - Original Message - From: Scott Loveless [EMAIL PROTECTED] Subject: Rechargeable batteries and chargers Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I know we've been over this before, but I'm too lazy to dig through the archives. Merry Christmzs anf a hwppu nwe uwsr, -- Scott (lightly malted) Loveless http://www.twosixteen.com/fivetoedsloth/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
I use the following: 1. GP 2700 MAh for my wireless mouse (used to be for my *istD and the flash). 2. Sanyo Eneloop 2000 MAh for my flash (they last forever in storage) 3. LaCrosse BC-900 charger - really excellent machine. Cheers. Boris Scott Loveless wrote: Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? I know we've been over this before, but I'm too lazy to dig through the archives. Merry Christmzs anf a hwppu nwe uwsr, -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Rechargeable batteries and chargers
- Original Message - From: Scott Loveless Subject: Rechargeable batteries and chargers Who's using rechargeable AA or AAA batteries, and which batteries are you using? Which chargers? When I used AA rechargales in the istD I used Energizer NIMH and a Kodak charger. When I got tired of the high maintenance whores that those batteries can be, I went to CR-V3 or whatever the heck they are lithiums. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
