What is a PX27 battery?

PX27 / V27PX was a ~5.6-volt mercury photographic cell. Mercury cells are obsolete. Specialist silver/alkaline replacements and adapters exist — verify voltage for your camera. Do not assume PX28 or 4LR44. See classic PX mercury replacements.

What is PX27 also called?

PX27 pack labels and aliases on this site include V27PX, S27PX. These are names for the same battery entity — not chemistry substitutes.

Is PX27 interchangeable with similar codes?

Related codes are not automatic equivalents. See Classic PX mercury cells and modern paths — match the code your device names.

Battery

PX27

5.6V mercury (legacy) cell

S27PX is a pack label for PX27 — same battery, different name on the package.

Chemistry: mercury_oxide_legacy
Voltage: 5.6 V
Diameter: —
Length: —
Used by: 0 devices

Common uses: Vintage cameras

Common questions

What is a PX27 battery?: PX27 / V27PX was a ~5.6-volt mercury photographic cell. Mercury cells are obsolete. Specialist silver/alkaline replacements and adapters exist — verify voltage for your camera. Do not assume PX28 or 4LR44. See classic PX mercury replacements.
What is PX27 also called?: PX27 pack labels and aliases on this site include V27PX, S27PX. These are names for the same battery entity — not chemistry substitutes.
Is PX27 interchangeable with similar codes?: Related codes are not automatic equivalents. See Classic PX mercury cells and modern paths — match the code your device names.

Other names

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

V27PX · S27PX

Related codes

No related codes listed yet.

Devices using PX27

No devices listed for this battery yet.

Compare

Classic PX mercury cells and modern pathsCompare

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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.
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Battery storage / organiser
Keep spare cells sorted and prevent coin-cell shorts
Keep coin cells away from children.
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Notes

Legacy ~5.6V mercury photo cell. Obsolete. Modern silver/alkaline replacements and adapters exist in the specialist trade — verify voltage and adapter path; not an automatic 4LR44 or PX28 swap.