Battery

PX32

5.6V mercury (legacy) cell

HM-N is a pack label for PX32 — same battery, different name on the package.

Chemistry: mercury_oxide_legacy
Voltage: 5.6 V
Diameter: 17 mm
Length: 45.4 mm
Used by: 2 devices

Common uses: Yashica Electro 35 rangefinders · Vintage electronic cameras

Other names

Genuine aliases and pack labels for this battery — not substitutes of a different chemistry.

HM-N · HM-4N · E164 · A32PX · PX32A

Related codes

No related codes listed yet.

Size family

Edge thickness in the 17 mm family — thicker bar means thicker cell. Not to scale. Highlighted cell is this page.

CR123A

34.5 mm

PX32

45.4 mm

Device-specific caveats

From manufacturer-backed notes on devices that use PX32 — not generic advice.

Keep cells away from children.

Devices using PX32

All (2)Film cameras (2)Yashica (2)

Used in

Film cameras2 devices

Brands: Yashica

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Testers & chargers

Optional tools that fit this cell type — only where the chemistry allows. Separate from the battery answer.

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Battery tester
Quick good / low / dead check for household cells
Crude check only — does not measure capacity under realistic load.
How to test a battery Buy on Amazon
Battery storage / organiser
Keep spare cells sorted and prevent coin-cell shorts
Keep coin cells away from children.
Buy on Amazon

Buy links are optional and separate from the battery answer.

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Search Amazon for packs of this battery code.

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Notes

Legacy ~5.6V mercury photographic cell (also HM-N / E164). Mercury obsolete. Modern alkaline A32PX / PX32A (~6V) are common replacements. Not the same problem as 1.35V PX625, and not an automatic swap for 6V 4LR44 / PX28 without device-specific caveats.