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05-18-2021, 06:10 PM   #1
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Replacement battery

It is my understanding that B&H has a Wein product that is a replacement for the original mercury batteries required to operate the Gossen Luna Pro meter. (Thanks for the info on the MS76 replacement last week!)

05-21-2021, 07:01 AM - 1 Like   #2
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Wein MRB625 1.35V Zinc-Air Battery
BH #WE625 • MFR #W9901201

We carry this as a replacement for the PX625, PX13, and MR-9 mercury cells batteries. I've had mixed results with these batteries. Years ago Manfrotto (I believe) sold an adapter that allowed the use of current batteries in Luna Pro's and I even had an Olympus OM1's battery chamber converted to take readily available batteries. Selling the OM1 was not one of my better moments and I hope whom ever has it now appreciates just what they have as my more favored (at the time) OM2's shutters have both died.

You may want to check out this Gossen post: MRB625 zinc-air batteries, which have a cell voltage of 1.35 V and are of identical shape and size as the V625PX and PX13 mercury batteries, are available from WeinCell or Exell Battery as replacements. The smaller MRB675 or PR44 hearing aid batteries can be used with a mechanical adapter as an inexpensive alternative. These batteries are activated before use by removing a protective foil, after which the electrolyte dries out within a short period of time and the battery has to be replaced again. The major disadvantage of zinc-air batteries for amateur photographers is thus their relatively short service life.


Last edited by Chuck-B&H; 05-24-2021 at 08:44 AM.

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