Before the manufacture of mercury batteries was banned, many cameras were designed to use them. Because mercury batteries produced a constant and reliable voltage, many cameras were built without any voltage regulation in the metering circuitry. Unless preventative measures are taken, use of other kinds of batteries gives erratic exposures and meter readings.

My solution to this problem, although also not 100% ideal is very cheap and provides the camera with a much closer voltage to that what is required. My Olympus 35rc appears to meter perfectly with these batteries, so if you have a camera that requires a px625 this might well be worth a go! I should add though, if you can justify the cash for a Wein cell, it is probably the best option … This is really just for the sometimes-miserly among us 🙂 Also, one of the sources I found said straight out that the "CRIS" adapters just used a series resistor to drop the voltage. But it's possible that the Small Battery Company does it differently.) Another mercury PX625 replacement is a zinc air battery. The WeinCELL MRB625 is a custom zinc/air battery designed to replace banned Another PX625 replacement is a zinc air battery. The WeinCELL MRB625 is a custom zinc/air battery designed to replace banned In the following 3 photos you can see the MR-9 battery adapter on the left, with a modern PX625 on the right. Positive side faced up Negative side faced up with the MR-9 battery adapter empty Negative side faced up with the MR-9 battery adapter with 386 battery slotted incost difference between the solutions. It is close enough that each person will have to make up their Discharge characteristics - the voltage of the mercuric oxide cell was fairly constant until it was fully discharged, whereas some cells (in particular alkaline) have a voltage that decreases steadily with time

Make your self a little sausage of blu-tak, plasticine or in my case play doh (I have a 2 year old, this stuff come to hand easily) and wrap it round the very edge of the battery making sure it doesn’t intrude on the flat [+] end. Then simply place it in the battery cap.and more precisely to these two 101's. Whether you would get the same results cannot be guaranteed by Voltage - the voltage of the mercuric oxide cell was 1.35v, the voltage of many of the popular alternatives is 1.5v or so

changes in the lighting between test shots. I did not use a studio setting for the tests. Exposures were conducted in the daylight, ensuring that no cloud slightest of possible delays at some shutter speeds. Both went to my long time repairman for a CLA (Clean, Lube, & oxide cell to the 1.35 Volts that your camera was designed for. No adjustment or modification to your camera is required. The almost exactly in sync with only minor differences in a couple of spots. I think that this can a attributed to some differences in the the factory are no longer available in the US. I had read online different possibilities. Different people had different opinions. While many said which battery solution was best, and gave general

cover occurred during the test shots. That is not to say that a high thin cloud could not have passed The adapter is easy to use with the PR44 675 Blue Tab Zinc Air battery and simply screws into the battery compartment of your camera. Making sure none of your chosen malleable material is encroaching on the thread of the cap, screw it into the camera. Minolta you can adjust the film speed ring by 1/3 of a stop. By understanding how the battery functions in your camera,

both equally smooth, crisp, and seemed to function wonderfully. Now to the reason for this posting. What battery to use. The PX625 Camera Battery Adapter replaces MR9, 625A, MRB625, PX625, EPX625, PX13 discontinued mercury cells. The mercury oxide battery problem, at Konica SLR system, providing information about the PX625 and PX675 battery that is not specific to Konica modelsThe LR625 is cheap and almost in the same size as the LR625. The only problem is that the voltage of LR625 is 1.5v, which is 0.15v higher than that of the PX625. The difference in voltage may slightly affect the light meter. But in reality, it does not matter much. This copper-made adapter can convert a LR44 battery or 675 zinc-air battery (also known as hearing aid battery) into a PX625. I recommed using a 675 zinc-air battery because its voltage is 1.4v, which is very close to the voltage of PX625, while the volage of LR44 is 1.5v. The light meter is more accurate when your battery has a more appropriate voltage. That is one advantage of using an adapter+hearing aid battery over using a LR625. The PX625 (also referred to by other names such as PX13) is a small button-shaped 1.35volt mercury battery which great number of camera models were designed to use.