Exell 1.35-Volt Zinc Air Coin Cell Battery, MRB625, Mercury-Free Replacement Battery Cell Replaces H-D, KX625, LR09, MR9, MRB625, PX13, PX62, PX625, RPX625, Z625PX

Needed to replace the viewfinder battery on my Yashica Mat-124 film camera. They used to use mercury batteries which aren't ideal so I did some research and found this. I was a bit concerned because this battery is shaped slightly different but it fits and the viewfinder works and reads properly too. Not sure about anything else with this battery such as longevity and voltage accuracy, but it suits my needs.

Not much to it. It is a battery. The voltage is specific some older tech required that voltage. I bought this for my Canon F-1. The light meter requires the voltage to be 1.35 volts.

Last time I installed some Lr44 batteries on my Nikon FE2 was 2 years ago. Last time I replaced these batteries for my Pentax Spotmatic was a month ago. After maybe 200 shots the battery began losing power. I measured the voltage when I first got the battery and it was 1.35 exactly what I needed. Now i'm down to 1.298 just a month later. The meter still works on the camera, but this is disappointing. These are batteries, not tooth-paste that you have to replace every month or so.

I have struggled to find a workable zinc-oxide battery with the recommended voltage for a Nikon F with Photomic FTN finder. This is it. Most suggested batteries on the market today produce a higher voltage than Nikon recommended when they produced this finder with mercury based batteries (no longer produced due to toxic waste properties). I had resorted to hearing aid batteries with custom machined sleeves and sleeves with diode voltage reduction (expensive modification) capability all to use the 1.5 volt batteries widely available on the market now. However these were all stop gap measures and just using 1.5 volt batteries threw the finders meter calibration out the door. Even if I have to replace these more often, it is an easy call versus expensive modifications to use 1.5 volt batteries. Thanks Exell for coming through with these. Exell Battery MRB625 1.35-Volt Zinc Air Battery (White)

Just got a first version Canon F1 camera, tried a regular 625 1.5V battery and meter read one F stop off underexposure compared to my Luna Pro. So ordered this battery and it is right on the money with my Luna Pro. Only downside was no instructions as to removing the sticky tape on + side and/or foil on - side. I looked at the Amazon Q&A for the similar Wein cells and followed the instruction of taking off the + side tape only and to let it sit for 1/2hr before installing in camera to allow the battery to breathe thru the four tiny holes and all worked fine. Mine came from Unique Photo and were also prompt to deliver.

Works with the Gossen Luna Pro. Can't speak to longevity yet, but the light meter gives the correct "zero" reading when doing the battery test, meaning the voltage is correct coming from these. Definitely pricey, but better than spending $1000 on a new digital meter.

Using my Canon camera's battery test procedure, this battery failed to even move the indicator needle. Indicating that it is out of power. However, the battery does have enough power to run the light meter at least in the short term. I will shoot a roll of film to test if the battery has enough power to properly run the meter, if not I will have to return the battery. PS, under normal use conditions the battery should have enough power to run the light meter between 1 and 2 years.UPDATE:I had the camera professionally serviced. The service technician confirmed that this battery had insufficient power to properly operate the camera's meter. Being that the service had to be performed out of state, the return period for this battery is now past. The service technician fitted the camera with a readily available 1.5 volt alkaline battery and adjusted the light meter to function properly at the increased voltage.

It was a perfect replacement for the 625 battery that is no longer made. My Canon F1 35mm film camera works again. I plan on buying extras just to keep them handy!

I needed this battery for a vintage Canon FT-ql that was purchased in the early 1970s. It had the original mercury battery (which lasted FOREVER, as I used this camera and original battery when I was a photography student back in 1993.) This past month I pulled the old camera out of storage but the old mercury battery had finally died. (BTW the old battery was marked "Made in W.Germany")Unfortunately a lot of chain camera stores, while they do carry replacement batteries with the correct dimensions, they are usually ALKALINE batteries, which means they start out at 1.5v, and as they are used, slowly drop the voltage until the battery dies. Most vintage cameras are calibrated to the old mercury battery voltage of 1.35v. If an alkaline battery is used, the light meter will measure incorrectly for a while, until the battery is used up enough that it puts out the required voltage, then the light meter will be correct, then as the battery dies it will be incorrect again.This Zinc-Air battery finally solves this issue, putting out the CORRECT voltage for the light meter. The fact that the voltage is correct makes up for the relatively short life span of these batteries. Honestly, a year in normal use isn't that bad for a little non-rechargeable cell. These batteries also have a shelf life of 10 years so depending on how much you plan to use the camera you could stockpile 2-4 batteries for later and know they'd still be good.To use these, you pull the little sticker off the top of the battery, then let it sit out in the air for about an hour before installing in the camera. On the bottom of the battery it looks like there's some tinfoil stuck on there - don't touch that, just leave it. Finally, (don't know how true this is) if you are not going to be using the battery for a while, you could remove it from the camera and replace the little sticker over the vent holes, allowing you to "save it for later".

me funcionaron perfecto, yo las use en una cámara canon autozoom super 8 para el exposímetro y no tuve ningún problema, además que el precio no me pareció exagerado como el de otras marcas que vi.

Doesn't seem to work with my Topcon Uni SLR from the late 60's.