Kat
Well-known
Has anyone ever ordered from this site? I'm looking for cheaper sources of the battery for my RFs. Silver oxide batts don't seem to be available here in the Philippines.
a little OT: sr44.com
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Trius
Waiting on Maitani
I haven't ordered from them, but many members on the OM list have had good success there.
ZorkiKat
ЗоркийК&
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Kat
What [camera?] will you be using them for? The ordinary alkaline LR44 cells seem to work fine for many applications. Never had failures with them in camera-related operations. Cheap too.
Jay
What [camera?] will you be using them for? The ordinary alkaline LR44 cells seem to work fine for many applications. Never had failures with them in camera-related operations. Cheap too.
Jay
Kat
Well-known
I need them for a couple of cams I got that take in silver oxide--a Fujica ST705 and an Olympus XA3. I just got myself a light meter as well, but I have previously relied 100% on in-camera metering, and will probably continue to do so, I'm worried the alkalines' fluctuating voltage would affect readings...
Trius
Waiting on Maitani
Alkaline have a very different discharge curve from silver-oxide. Certain equipment only works reliably with SR44 and equivalents. And it's never a bad idea to use them even if the camera or meter is adjusted for alkaline. I never buy alkaline batteries in this form factor. Ever.
Bill58
Native Texan
Everything I've ever read is that Alkaline is bad news--no accurate readings--so I avoid them 100%.
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ZorkiKat
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I used nothing but alkalines (no silver cells found here) when I shot with Nikon FM2, FE, FE10, Canon AE-1, Kiev 35-A, Pentax K-1000, Pentax MX, etc, and got good results. They seemed to work fine 🙂
Jay
Jay
tkluck
Well-known
Success with alkalines depends on weather the device has a voltage compenstating circuit. Some do, some don't, some sort of. Sometimes hard to track down good info, and easier to conduct your own expiriments.
More detailed info:
http://www.buhla.de/Foto/batt-adapt-US.pdf
More detailed info:
http://www.buhla.de/Foto/batt-adapt-US.pdf
Fedzilla_Bob
man with cat
I bought sr44s to use in a Bessa R, seemed to last a lot longer than the alkalines.
Seele
Anachronistic modernist
The way I understand it is this:
Both silver and alkaline cells are made in the same form factor, and lithium is also made in a "double-up" size. Silver comes first and holds the most charge; if you run your batteries flat by taking pictures, it is the best choice. Lithium has the longest storage life so if you take pictures occasionally, then it would be the most economical (with a caveat). Alkaline is somewhere in between in performance.
The problem with lithium is that it has poor performace in many cameras, or appears to run it down at an alarming rate. I would tend to stay clear of them, unless it is said by the camera manufacturer to be compatible.
I have been using alkaline in both 44 (aka 76, 13, etc) and the "four-up" 28 (aka 544) form factors, and have found no difference in exposure accuracy and other battery-powered functions. In fact, I make my own "four-up" batteries by stacking four of those button cells together which is a great money saver. I guess the main thing is "suck it and see", but of course YMMV.
Both silver and alkaline cells are made in the same form factor, and lithium is also made in a "double-up" size. Silver comes first and holds the most charge; if you run your batteries flat by taking pictures, it is the best choice. Lithium has the longest storage life so if you take pictures occasionally, then it would be the most economical (with a caveat). Alkaline is somewhere in between in performance.
The problem with lithium is that it has poor performace in many cameras, or appears to run it down at an alarming rate. I would tend to stay clear of them, unless it is said by the camera manufacturer to be compatible.
I have been using alkaline in both 44 (aka 76, 13, etc) and the "four-up" 28 (aka 544) form factors, and have found no difference in exposure accuracy and other battery-powered functions. In fact, I make my own "four-up" batteries by stacking four of those button cells together which is a great money saver. I guess the main thing is "suck it and see", but of course YMMV.
Kim Coxon
Moderator
Hi,
Silver cells do have a slightly higher capacity than alkalines but a more important property is the discharge curve. Silver cells have a flat discharge curve wheras the alkalines slope. With most cameras post the mercury era and especially those that take more than one cell, it is generally not a problem as the meter is either bridged or the is some form of compensation.
However if you are using these with diodes or a battery adapter to replace mercuries, it is important to use silver's. The diode fix works by using the forward bias of the diode to drop the voltage a fixed amount. With a silver cell in the adapter, you will get a constant 1.35v till almost battery exhaustion just like a mercury. With an alkaline, it will start at about 1.35 but drop to about 1.1v as the battery gets used which is likely to throw the meter out.
Kim
Silver cells do have a slightly higher capacity than alkalines but a more important property is the discharge curve. Silver cells have a flat discharge curve wheras the alkalines slope. With most cameras post the mercury era and especially those that take more than one cell, it is generally not a problem as the meter is either bridged or the is some form of compensation.
However if you are using these with diodes or a battery adapter to replace mercuries, it is important to use silver's. The diode fix works by using the forward bias of the diode to drop the voltage a fixed amount. With a silver cell in the adapter, you will get a constant 1.35v till almost battery exhaustion just like a mercury. With an alkaline, it will start at about 1.35 but drop to about 1.1v as the battery gets used which is likely to throw the meter out.
Kim
