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Small cylindrical silver zinc-air camera battery, model 270

Wein Products Inc.

Wein Products Inc. 270 camera battery

SKU CH-HCNV-4PAJB MPN 270

Zinc-air camera battery compatible with a wide range of vintage models from Agfa, Canon, Hasselblad, Kodak and others

  • Zinc-air chemistry provides stable voltage for accurate metering
  • Replaces mercury cells in models such as the Canon F-1 and FTb
  • Compatible with Argus 270 Insta-Load and Kodak Retina 11-F
  • Suits Hasselblad Meter Prism Finder CdS and Konica Auto S/1.6
  • Fits Bell & Howell FD35 and Auto Reflex Dial 35

Wein MRB625 Zinc Air Battery

The Wein MRB625 is a zinc air camera battery designed for a wide range of vintage still cameras. It replaces the discontinued mercury oxide cells once used in models from Canon, Konica, Minolta, Olympus, Pentax and many other brands. Photographers restoring classic film equipment will find it a direct fit for their meter circuits.

Steady voltage under continuous metering

Zinc air chemistry delivers a stable 1.35 V output that does not sag during extended metering sessions. The cell activates when the adhesive tab is removed, exposing air ports that sustain the reaction for months of regular shooting. It avoids the voltage drift common with alkaline substitutes in CdS light meters.

Compact button cell with broad legacy fit

The 625 size fits the original battery compartments of listed models such as the Canon FTb, Konica Auto S2, Minolta Hi-Matic 7s and Olympus OM-1 without adapters. Its flat contact design ensures reliable connection in tight vintage wells. Users must store unused cells sealed and replace them once the tab has been pulled.

Highlights

  • Zinc-air chemistry provides stable voltage for accurate metering
  • Replaces mercury cells in models such as the Canon F-1 and FTb
  • Compatible with Argus 270 Insta-Load and Kodak Retina 11-F
  • Suits Hasselblad Meter Prism Finder CdS and Konica Auto S/1.6
  • Fits Bell & Howell FD35 and Auto Reflex Dial 35

Specifications

No published specifications for this item yet.

Questions about this item

Will this zinc-air battery deliver the steady voltage my vintage meter needs during a full day of shooting?

Zinc-air chemistry maintains a flat discharge curve once activated, so the meter reading stays consistent from the first frame to the last.

My camera takes a PX625 mercury cell — does this Wein 270 fit the same compartment without an adapter?

The MRB625 is built to the same physical dimensions as the original PX625, so it drops straight into the battery chamber of every model listed.

I still shoot with a Canon FTb and a Hasselblad meter prism — will one battery type cover both?

Yes, the compatibility list includes the Canon FTb and the Hasselblad Meter Prism Finder CdS, so a single Wein 270 works in both.

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