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PX640 battery adapter for Minolta Hi-Matic E/F, Olympus 35 EC & Yashica FC/GX

PX640 battery adapter for Minolta Hi-Matic E/F, Olympus 35 EC & Yashica FC/GX

Type
€19,95 EUR
€19,95 EUR
Bundle offer Sold out
🟢 In stock · 25,000+ satisfied customers since 2019

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  • Replaces the obsolete PX640 (1.35V mercury) battery with modern cells.
  • Uses affordable zinc-air hearing aid batteries (type 675) for stable 1.4V voltage.
  • Prevents measurement errors caused by 1.5V alkaline batteries.
  • Made from durable PLA+ for long-lasting use.

Scope of Delivery

  • Standard: 1x PX640 adapter + 2x button cells
  • Set: Standard + 1x universal light seal set including mirror damper
  • Complete: Set + 1x extra battery pack (type 675) + 1x film memo holder (120 film carton holder)

Technical Specifications

  • Material: Technical plastic (PLA+)
  • Fits: Zinc-air battery type 675 (PR44)
  • Replaces: PX640, E640N, V640PX, MR52, NR52, PX13
  • Voltage: approx. 1.35V – 1.4V (chemically stable)

Description

Many classic cameras like the Minolta Hi-Matic E or the Olympus 35 EC were designed for the constant voltage of 1.35V mercury batteries. Since these batteries (PX640) are no longer available, this adapter offers a functional solution. It is precisely made and adapts a common 675 zinc-air cell to the PX640 format.

Unlike alkaline batteries, whose voltage steadily drops and is initially too high (1.5V), zinc-air cells maintain a constant voltage of about 1.4V. This ensures correct exposure values without recalibrating the camera. The adapter itself is purely mechanical and passes the current directly.

Important note: NEVER charge in the original charger. Zinc-air batteries are not rechargeable.

Compatibility

Fits various cameras, including:

  • Canon: Canodate E, Canodate E-N, Cine Canonet 8, Date-Matic, Motor Zoom 8 EEE [...]
  • Fuji: Date, GA (Rangefinder), GE, GER [...]
  • Minolta: Hi-Matic 5, Hi-Matic CS, Hi-Matic E, Hi-Matic ES, Hi-Matic F, Hi-Matic FP [...]
  • Olympus: 35 EC, 35 EC2, 35 ECR, 35 ED [...]
  • Pentax: 1°/21° Spotmeter, 3°/21° Spotmeter, Spotmeter FL, Spotmeter I, Spotmeter II, Spotmeter III [...]
  • Yashica: Electro 35 FC, Electro 35 GX, Lynx 14E, Lynx-5000E [...]

Not sure if the battery fits your camera?
Here is a complete list of all cameras compatible with the PX640 battery type.

SKU: 1012 Show full details

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