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#21
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why can't I use rechargeable batteries?
Ο "TrevM" έγραψε στο μήνυμα ... Second thoughts below... "TrevM" wrote in message ... "Nate Nagel" wrote in message ... Hi all, got a Nikon L6 that I've had for a year or two, although I had this same problem with my previous two digicams. I seem to only be able to get good performance with non-rechargeable batteries (currently using Energizer E2 lithium which actually seem to have decent life) if I use my Energizer NiMH rechargeables I can *maybe* take one or two pics before I get a "low battery" warning and the camera shuts down. [...] nate Hi Nate, [...snip] So, have you checked the maximum current available from your batteries, as well as the voltage? I do this brutally by shorting the cell for a second or so (only!) between the terminals of a multimeter with a 10 or 20 amp range as an ammeter. A good rechargeable will give 5 to 10 amps or even more (depending on the resistance of the ammeter and the internal resistance of the cell, which is what is actually under test here), and so will a fresh alkaline cell. This treatment should not be prolonged or repeated often, as the cell will soon overheat and be ruined anyway! [...snip] And I also want to add that there is a risk of wrecking the multimeter - a good AA cell can give 12 -15 amps into a near-short-circuit, and this current could damage a meter with a 10 amp max. rating. So be careful, and on second thoughts I would say you definitely need a meter capable of handling at least 20 amps. No, he needs a current transformer;-) http://en.wikipedia.org/wiki/Current_transformer -- Tzortzakakis Dimitrios major in electrical engineering mechanized infantry reservist hordad AT otenet DOT gr |
#22
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why can't I use rechargeable batteries?
"Tzortzakakis Dimitrios" wrote in message ... Ο "TrevM" έγραψε στο μήνυμα ... Second thoughts below... [...] So, have you checked the maximum current available from your batteries, as well as the voltage? I do this brutally by shorting the cell for a second or so (only!) between the terminals of a multimeter with a 10 or 20 amp range as an ammeter. A good rechargeable will give 5 to 10 amps or even more (depending on the resistance of the ammeter and the internal resistance of the cell, which is what is actually under test here), and so will a fresh alkaline cell. This treatment should not be prolonged or repeated often, as the cell will soon overheat and be ruined anyway! [...snip] And I also want to add that there is a risk of wrecking the multimeter - a good AA cell can give 12 -15 amps into a near-short-circuit, and this current could damage a meter with a 10 amp max. rating. So be careful, and on second thoughts I would say you definitely need a meter capable of handling at least 20 amps. No, he needs a current transformer;-) http://en.wikipedia.org/wiki/Current_transformer -- Tzortzakakis Dimitrios major in electrical engineering mechanized infantry reservist hordad AT otenet DOT gr Ho Ho! Seriously though, you have inspired me to edit the opening paragraph of that Wiki entry to mention the fact that current transformers are a.c. devices! TrevM |
#23
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why can't I use rechargeable batteries?
On 2007-10-27 09:33:45 -0400, Nate Nagel said:
Hi all, got a Nikon L6 that I've had for a year or two, although I had this same problem with my previous two digicams. I seem to only be able to get good performance with non-rechargeable batteries (currently using Energizer E2 lithium which actually seem to have decent life) if I use my Energizer NiMH rechargeables I can *maybe* take one or two pics before I get a "low battery" warning and the camera shuts down. They work fine in a flashlight however - will keep a mini mag lite going for several hours. I suspect it is because of the low voltage. I tried to get a set of the "real" Nikon batteries sold for my camera when I first bought it but they were unavailable even direct from Nikon. I suspect the "problem" is the lower voltage of the NiMHs but don't know what to do about it. Is there something I'm missing here? I'd *like* to be ecologically correct but rechargeable batteries just don't seem to work in any digital camera I've had. I'm certainly not a serious photographer but I do need to use my camera a lot for work. nate Simple NICADS turn out 1.2 volts... Alkaline 1.5 volts Big difference. If the camera isn't designed to use the lower voltage then, it won't work.. NiCads work best in high current device, short demand devices... ie.e Electronic Flash, some power tools like power screw drivers. They don't work so well in low amperage, long draw devices like flashlights and cameras. -- Jim |
#24
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why can't I use rechargeable batteries?
Simple NICADS turn out 1.2 volts... Alkaline 1.5 volts Big difference. If the camera isn't designed to use the lower voltage then, it won't work.. NiCads work best in high current device, short demand devices... ie.e Electronic Flash, some power tools like power screw drivers. They don't work so well in low amperage, long draw devices like flashlights and cameras. Who mentioned NICADS?.......... The battery in question is a NIMH battery. Since when is a camera not a high amperage device? Since when is a camera not designed to use NIMH batteries? |
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