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Rechargable Ni-CDs for Canon A540?
Recently got one Canon540 and am using them with Alkaline AAs.Have got some
old NiCds and would like to know if they'd be any good? How do they compare vis-a-vis Alkalines? Would like opinions from experts. Thanks in advance -- drjayceeATgmailDOTcom |
#2
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Rechargable Ni-CDs for Canon A540?
On Sat, 16 Sep 2006 17:51:38 +0530, Jaycee
wrote: Recently got one Canon540 and am using them with Alkaline AAs.Have got some old NiCds and would like to know if they'd be any good? How do they compare vis-a-vis Alkalines? Would like opinions from experts. Thanks in advance I wouldn't want to deal with the hassles of NiCads and inherent charge memory, deep discharge problems etc. I suggest NiMH from http://www.mahaenergy.com/store/products.asp especially the 2700's. |
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Rechargable Ni-CDs for Canon A540?
Jaycee wrote:
Recently got one Canon540 and am using them with Alkaline AAs.Have got some old NiCds and would like to know if they'd be any good? How do they compare vis-a-vis Alkalines? Would like opinions from experts. Thanks in advance -- drjayceeATgmailDOTcom As has been advised, grab some NIMHs. If you don't have a charger capable you can usually buy high speed chargers with batteries for much better prices nowadays, but batteries themselves are reasonable. NIMH kick the backside off alkaline batteries in stuff like digital cameras. I don't know which country you're in so suggest a search on google, just put in something like 4 X AA nimh or if you buy stuff like bank cd-r check the places you buy from to see if they sell batteries too. and obviously if the cam takes four you're probably better off with eight. -- Paul (This sky, too, is folding under you) ------------------------------------------------------ Stop and Look http://www.geocities.com/dreamst8me/ |
#4
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Rechargable Ni-CDs for Canon A540?
"Jaycee" wrote in message news Recently got one Canon540 and am using them with Alkaline AAs.Have got some old NiCds and would like to know if they'd be any good? How do they compare vis-a-vis Alkalines? Would like opinions from experts. Thanks in advance -- drjayceeATgmailDOTcom i'll say apart from what other two said, you can use NiCd ones, it's just their capacity is low comparing to NiMH so i guess they won't last much longer than alkaline's. If you have them lying around, i see no reason why not to use them as long they are alive, though. |
#5
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Rechargable Ni-CDs for Canon A540?
Jaycee wrote:
Recently got one Canon540 and am using them with Alkaline AAs.Have got some old NiCds and would like to know if they'd be any good? How do they compare vis-a-vis Alkalines? Would like opinions from experts. Thanks in advance NiMH are preferred. There is one downside, if you take very few pictures (or fail to drain them in about a month or less), you will see problems with self discharge. Not serious but annoying. If that matches your shooting habits, take a look at the new eneloop NiMH's now becoming available. Their capacity isn't as high as latest NiMH, but still a lot more than my very first Quest with would give 350 shots in A40 if used over a short period. Do a google search for details. Later cameras such as yours are said to do quite well on alkalines. I've just put 4 in my A95 to see how well they do. Dave Cohen |
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Rechargable Ni-CDs for Canon A540?
On 16 Sep 2006 15:48:38 +0200, Protoncek (ex.SleeperMan) wrote:
i'll say apart from what other two said, you can use NiCd ones, it's just their capacity is low comparing to NiMH so i guess they won't last much longer than alkaline's. If you have them lying around, i see no reason why not to use them as long they are alive, though. It's probably worse than that. In the A540, alkalines should last about 1/2 as long as NiMH, and as the NiMH cells are rated about 2,500mAh, you could say that the alkalines are equivalent to about 1,200mAh. (they're actually very close in capacity to the NiMH cells, but they can't deliver more than 1/2 of their energy to the camera.) If the NiCads are brand new, they'll have a capacity ranging from 600 to 900mah, depending on where they're bought, so they shouldn't last as long per charge as alkalines. If they're not brand new, their capacity could be much less than 600mAh. If the flash and the LCD is not used, NiCads might be good for several dozen shots. If the flash is used though, the number of shots will be greatly reduced. That might be enough in some cases, especially if the A540 never wanders too far from a charger or another set of fresh batteries. |
#7
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Rechargable Ni-CDs for Canon A540?
"ASAAR" wrote in message ... On 16 Sep 2006 15:48:38 +0200, Protoncek (ex.SleeperMan) wrote: i'll say apart from what other two said, you can use NiCd ones, it's just their capacity is low comparing to NiMH so i guess they won't last much longer than alkaline's. If you have them lying around, i see no reason why not to use them as long they are alive, though. It's probably worse than that. In the A540, alkalines should last about 1/2 as long as NiMH, and as the NiMH cells are rated about 2,500mAh, you could say that the alkalines are equivalent to about 1,200mAh. (they're actually very close in capacity to the NiMH cells, but they can't deliver more than 1/2 of their energy to the camera.) If the NiCads are brand new, they'll have a capacity ranging from 600 to 900mah, depending on where they're bought, so they shouldn't last as long per charge as alkalines. If they're not brand new, their capacity could be much less than 600mAh. If the flash and the LCD is not used, NiCads might be good for several dozen shots. If the flash is used though, the number of shots will be greatly reduced. That might be enough in some cases, especially if the A540 never wanders too far from a charger or another set of fresh batteries. agreed. Capacity is just too low for serious work. I'd say they are usable for home testing purpose, but soon a man would bo crazy and throw them away just because of being empty too soon. Capacity of alkaline batteries is actually quite large, they are just not capable of delivering high currents, so, say in my ex S2 canon they lasted, say, max.50-100 shots, while a full set of 2600mAh NiMH were good for appr. 500 shots. Note however that those "dead" alkaline's were quite capable of running, say a small radio or clock for months, though... |
#8
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Rechargable Ni-CDs for Canon A540?
Trouble is with Nicads they are only 1.4V per cell and not 1.5v per
cell, also Nicads have a pretty dismal self discharge rate. You are better using NiMH, metal Hydride batteries better still Lithium Ion batteries are the one's to use, the self discharge rate is better than Nicads. Li-ION, Lithium Ion batteries these are far superior in holding their charge when not in use over long periods. A while ago a friend brought me a Olympus camera, I don't repair cameras and wasn't in at the time otherwise he would have got it back pretty smartly. It powered up for just a few seconds and then died... the batteries where Alkaline non-rechargeables measured perfectly under load on a battery tester, why I don't know but I tried some Duracells, lo and behold they worked the camera perfectly.. they measured just the same. Brand new batteries he bought and loads of em.... was just no good at handling an appreciable load, as you drew more current the terminal voltage sagged which the Olympus didn't much care for.. Battery tester he tells fibs...! Funny how people alway's blame the camera.. always test batteries under load, for digital cameras batteries tester's tell 'porkies' as a camera takes a much higher current under load compared to these. Always turn the LCD display off when not in use, these are the battery flatteners. Davy |
#9
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Rechargable Ni-CDs for Canon A540?
"Davy" wrote in message ... Trouble is with Nicads they are only 1.4V per cell and not 1.5v per cell, also Nicads have a pretty dismal self discharge rate. You are better using NiMH, metal Hydride batteries better still Lithium Ion batteries are the one's to use, the self discharge rate is better than Nicads. Li-ION, Lithium Ion batteries these are far superior in holding their charge when not in use over long periods. hold on a bit...where on earth did you find 1.4 V? Run in a store, buy some of them and read what say on them - it says 1.2 V !!! Secondly, it's NOT the problem, since all cameras are MADE for them, they just tolerate bigger voltage if using alkaline batteries. So, don't mislead things here... A while ago a friend brought me a Olympus camera, I don't repair cameras and wasn't in at the time otherwise he would have got it back pretty smartly. It powered up for just a few seconds and then died... the batteries where Alkaline non-rechargeables measured perfectly under load on a battery tester, why I don't know but I tried some Duracells, lo and behold they worked the camera perfectly.. they measured just the same. Brand new batteries he bought and loads of em.... was just no good at handling an appreciable load, as you drew more current the terminal voltage sagged which the Olympus didn't much care for.. Battery tester he tells fibs...! Funny how people alway's blame the camera.. always test batteries under load, for digital cameras batteries tester's tell 'porkies' as a camera takes a much higher current under load compared to these. Always turn the LCD display off when not in use, these are the battery flatteners. Davy funny, how all says that LCD is battery eater, while i've had ALWAYS LCD on when i had camera on and i still managed to make over 500 shots with one charge. They also say IS is battery eater, but i still had IS ALWAYS on and still made over 500 shots with one charge.... But i admit, earlier models DID have LCD's which were battery eaters... |
#10
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Rechargable Ni-CDs for Canon A540?
But i admit, earlier models DID have LCD's which were battery eaters...
A bit off topic but I think it's clear that battery usage is one area in which digital cameras have improved enormously in the last few years. My old Olympus C2100 needed four AA cells and used to munch its way through a set of 1700MaH NiMH batteries in about a day and a half. My Canon A700 only needs two AAs and lasted out nearly to the end of my recent two weeks holiday, shooting at anything that moved (and a lot that didn't) every day, before needing more to eat. Yes, I am still using 1700MaH cells. When I bought them you couldn't get much more and they are still going strong so why fix something that ain't broke. Keith |
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