Finding the right battery adapter can bring a vintage film camera or exposure meter back to life without compromising fit or reliability. The best options help you replace obsolete mercury batteries with modern alternatives.
Below, we highlight standout camera battery adapters for film cameras and explain what matters most when choosing between MR-9 and PX640 styles, materials, and compatibility.
Best 10 Camera Battery Adapters for Film Cameras Picks for 2026
Copper PX640 Converter
- Copper adapter for PX640-compatible vintage cameras
- Single-piece format for a simple replacement setup
- Designed to use a zinc-air cell in place of 1.35V batteries
Best For: Users with PX640-compatible film cameras needing a single replacement adapter
Two-Pack MR-9 Adapter
- 2-pack adapter for MR-9, PX625, and PX13 use
- Fits LR44, hm-4n, or 1.4v zinc-air batteries
- Compact copper build for vintage camera battery bays
Best For: People needing a compact two-pack for compatible exposure meters and film cameras
PX640 Copper Pair
FASTROHY Vintage Camera Adapters
- 2-pack for PX640-compatible vintage film cameras
- Copper-made and described as easy to install
- Supports use of a zinc-air cell
Best For: PX640 camera owners who want an easy-to-install two-adapter set
MR-9 Adapter Pair
- 2-pack adapter for MR-9, PX625, and PX13
- Uses LR44 or 1.4v zinc-air batteries
- Durable build, battery not included
Best For: Film camera owners needing a simple replacement adapter for common batteries
Best for Everyday Use
- 2-piece PX640 adapter for vintage cameras
- Supports zinc-air cell use
- Copper build, voltage unchanged
Best For: Vintage camera owners with PX640-compatible models
MR-9 No-Conversion Pair
- 2-pack for MR-9, PX625, and PX13
- Works with 675 PR44, zinc-air, or LR44
- No voltage conversion, battery not included
Best For: Users restoring older film cameras who want direct battery compatibility
Copper PX640 Adapter
PX640 Film Camera Battery Adapter
- Copper build for long-life use
- Fits LR44 or 1.35V zinc air batteries
- 2-pack for PX640 vintage film cameras
Best For: Photographers needing a durable PX640 adapter for vintage film cameras
Brass Meter Adapter
- Brass metal adapter for older film meters
- Fits PX625, PX13, MR9, and more
- Uses LR44 or 1.4V zinc air batteries
Best For: Older film cameras and exposure meters using PX625-style cells
Solid Copper Converter
- Maintains 1.35V for vintage metering
- Fits PX625, MR9, and PX13 slots
- Solid copper build with LR44 or zinc air support
Best For: Classic 35mm cameras and meters that need 1.35V-compatible replacement support
Dual-Pack MR-9 Adapter Set – BAQI MR-9 for PX625/PX13
If you are shopping for camera battery adapters for film cameras, this BAQI 2-pack is aimed at old exposure meters that used MR-9, PX625, or PX13 batteries. It is designed to let compatible vintage cameras and meters run with LR44 or a 1.4v zinc-air battery, making it a practical replacement option when the original battery type is no longer easy to source.
Best For: Owners of compatible vintage film cameras and exposure meters who want a simple two-adapter replacement set.
Pros:
- Includes 2 adapters, which is useful for backups or multiple cameras.
- Designed for MR-9, PX625, and PX13 applications.
- Works with LR44 or a 1.4v zinc-air battery, according to the notes.
- Positioned as a direct replacement for getting an old camera functional again.
Cons:
- Battery is not included.
- Only suitable for compatible vintage models, not universal use.
- The notes do not describe voltage conversion, so fit and battery choice still matter.
This is a straightforward value pick if your goal is to revive a compatible classic camera or meter without overcomplicating the setup.
Copper PX640 Converter – BAQI PX640 HM-N Adapter
BAQI PX640 HM-N Camera Battery Adapter Converter for Vintage Film Cameras Copper
Check Price On AmazonThis BAQI option is one of the more targeted camera battery adapters for film cameras if you need a PX640-style solution. The notes say it is meant to let vintage cameras compatible with PX640 use a zinc-air cell, and that it helps replace 1.35V PX640 batteries with an LR44-to-zinc-air approach.
Best For: Film camera users with PX640-compatible vintage gear who want a single copper adapter for battery replacement.
Pros:
- Built from copper, according to the listing.
- Designed for PX640-compatible vintage cameras.
- Intended to help use a zinc-air cell in place of hard-to-find 1.35V batteries.
- Single-adapter format keeps it simple for one camera setup.
Cons:
- Only 1 adapter is included.
- Batteries are not included.
- Compatibility is limited to cameras that use PX640-style batteries.
For a specific PX640 replacement need, this is a practical and focused adapter rather than a broad all-in-one solution.
Two-Pack MR-9 Adapter – BIAQI 1.4V Film Camera Fit
BIAQI 2Pcs Battery Adapter for Film Camera Exposure Meter MR-9 PX625 PX13 1.4V Battery Adapter
Check Price On AmazonAmong camera battery adapters for film cameras, this BIAQI two-pack is built for MR-9, PX625, and PX13 exposure meter use. The notes say it fits LR44, hm-4n, or a 1.4v zinc-air battery, and it is a compact copper option for keeping compatible vintage gear powered.
Best For: Buyers who need a compact two-adapter set for compatible MR-9, PX625, or PX13 cameras and meters.
Pros:
- Comes with 2 adapters in the package.
- Made from copper and described as durable with long life.
- Fits LR44, hm-4n, or a 1.4v zinc-air battery.
- Compact form factor suits small camera battery compartments.
Cons:
- Battery is not included.
- The notes say it cannot increase or reduce voltage.
- Only works with compatible MR-9/PX625/PX13-style equipment.
If your priority is a simple two-piece replacement for an older exposure meter or film camera, this is a sensible, compact choice.
PX640 Copper Pair – FASTROHY Vintage Camera Adapters
FASTROHY 2pcs PX640 Camera Battery Adapter for Vintage Film Cameras Copper Made HM-N Camera
Check Price On AmazonIf you are comparing camera battery adapters for film cameras, this FASTROHY 2-pack is another PX640-focused option. It is described as a copper-made adapter for vintage cameras compatible with PX640, and the notes say it allows use of a zinc-air cell while remaining very easy to install.
Best For: Owners of PX640-compatible vintage film cameras who want a simple two-adapter copper set.
Pros:
- Includes 2 adapters.
- Copper construction is highlighted in the notes.
- Designed for PX640-compatible vintage film cameras.
- Described as very easy to use and install.
Cons:
- Batteries are not included.
- Only supports PX640-compatible cameras.
- The listing does not provide a broader voltage-conversion feature set.
This is a clean, purpose-built PX640 replacement set for users who want a basic two-piece solution without extra complexity.
MR-9 Adapter Pair – Compact PX625/PX13 Power Fix
FASTROHY 2Pcs MR-9 Battery Adapter Replacement for Film Camera and Exposure Meter MR9 PX625 PX13
Check Price On AmazonIf you need camera battery adapters for film cameras that simply let you use more common cells, this 2-pack MR-9 adapter is built for MR-9, PX625, and PX13 applications. It is a straightforward replacement for vintage camera exposure meter setups and is meant for LR44 or 1.4v zinc-air batteries without changing voltage.
Best For: Film camera owners who want a simple MR-9/PX625/PX13 adapter for common replacement batteries.
Pros:
- Fits MR-9, PX625, and PX13 battery applications.
- Works with LR44 or 1.4v zinc-air batteries.
- Comes as a 2-piece set.
- Made from durable material for long life.
Cons:
- Battery is not included.
- Does not increase or reduce voltage.
- Fit depends on using the specified battery types.
Overall, this is a practical no-frills adapter set for photographers who want a durable replacement and can match the battery type to the camera’s original needs.
Best for Everyday Use – Yashica Electro 35 Adapter
BIAQI 2pcs PX640 Battery Converter Adapter for Film Camera Copper Yashica Electro 35GX HM-N
Check Price On AmazonFor camera battery adapters for film cameras that need a PX640-style solution, this copper adapter is aimed at vintage models that use PX640-compatible cells. It is designed to allow use of a zinc-air cell and is explicitly described as not changing voltage, so it suits users who want a direct replacement-style adapter.
Best For: Owners of compatible vintage film cameras who need a PX640 adapter for zinc-air cells.
Pros:
- Made for PX640 HM-N compatible vintage cameras.
- Allows use of a zinc-air cell.
- Comes as a 2-piece set.
- Copper construction with a lightweight design.
Cons:
- Battery is not included.
- Does not increase or reduce voltage.
- Compatibility is limited to PX640-style devices.
This is a focused adapter option for specific vintage camera setups, especially if you want a simple copper-made converter for the listed PX640-compatible bodies.
MR-9 No-Conversion Pair – 675/LR44 Adapter
This 2-pack is a practical pick among camera battery adapters for film cameras when you want MR-9, PX625, or PX13 support without voltage conversion. It fits hearing aid batteries size 675 PR44, 1.4v zinc-air batteries, or LR44 cells, and is aimed at reviving older camera and exposure meter setups.
Best For: Film camera users who need a no-voltage-change adapter for 675, PR44, or LR44 battery options.
Pros:
- Designed for MR-9, PX625, and PX13 applications.
- Works with 675 PR44, 1.4v zinc-air, or LR44 batteries.
- Useful for compatible cameras like Canon QL17 and Olympus OM.
- Includes two adapters in the package.
Cons:
- Does not alter voltage levels.
- LR44 use may require manual exposure adjustments.
- Battery is not included.
For photographers restoring older gear, this adapter set is best when you want a straightforward replacement that matches the original battery behavior and keeps the setup simple.
Copper PX640 Adapter – PX640 Film Camera Battery Adapter
DBZZ 2pcs PX640 Camera HM-N Copper Made Battery Adapter for Film Camera Vintage Film
Check Price On AmazonIf you need camera battery adapters for film cameras that let you keep using a discontinued PX640-style power setup, this 2-piece copper adapter is a simple, practical option. It is designed to help replace 1.35V batteries in vintage film cameras using LR44 or zinc air cells, while keeping the fit focused on classic camera use rather than voltage conversion.
Best For: Film photographers looking for a durable PX640 adapter for vintage cameras who already understand they still need the correct battery type and voltage solution.
Pros:
- Made of high-quality copper for durable, long-life use
- Supports easy swapping from LR44 to 1.35V zinc air batteries
- Includes 2 adapters in the package
- Designed specifically for vintage film camera battery replacement use
Cons:
- Battery is not included
- Cannot increase or reduce voltage
- Only suitable for PX640-style replacement needs
This is a straightforward adapter for photographers who want a solid copper build and a simple two-pack. Since it does not alter voltage, it works best when matched with the right battery choice for the camera.
Brass Meter Adapter – PX625 Exposure Meter Adapter
eTone 2pcs Brass Metal Battery Adapter for Older Film Camera Exposure Meters MR9 PX625 PX13
Check Price On AmazonFor camera battery adapters for film cameras aimed at older exposure meters, this eTone brass adapter is built to bridge LR44 batteries or a 1.4V zinc air cell into PX625, PX13, MR9, and related slots. It is a compact solution for vintage meter batteries when you want a metal adapter made for classic camera compatibility.
Best For: Owners of older film cameras or exposure meters that use PX625, PX13, or MR9 battery formats.
Pros:
- Brass metal construction for a solid feel
- Works with LR44 or a 1.4V zinc air battery
- Compatible with PX625, PX13, MR9, LR9, V625U, S625PX, and MRB625
- Two adapters included
Cons:
- Single-use listing, so it is not positioned as a rechargeable accessory
- Battery type still has to match the camera or meter’s needs
- Best suited to older meter formats rather than modern cameras
This adapter is a good fit if your priority is compatibility across several legacy battery formats. The brass build and two-pack make it especially useful as a backup-friendly choice for classic exposure meter setups.
Solid Copper Converter – MR9 PX625 Battery Adapter
This camera battery adapter for film cameras is designed for classic 35mm bodies and meters that need a 1.35V mercury-battery replacement. The solid copper build is meant to maintain 1.35V output, and the adapter is listed for PX625, MR9, and PX13 slots, including compatibility with cameras like the OM1.
Best For: Film shooters who want a copper adapter that keeps vintage metering close to 1.35V in compatible cameras.
Pros:
- Maintains 1.35V output for accurate light metering
- Compatible with PX625, MR9, and PX13 slots
- Solid copper construction for conductivity and stable performance
- Supports LR44 or zinc air cells for replacement of discontinued batteries
Cons:
- Flat-bottomed air cells may need spacing to keep vents clear
- Battery chamber fit depends on the specific camera
- Battery itself is not included
Among camera battery adapters for film cameras, this one stands out for its stated voltage conversion focus and broad classic-camera support. It is a sensible pick when meter accuracy and a copper build matter more than extra features.
How We Picked the Best Camera Battery Adapters for Film Cameras
We focused on Camera Battery Adapters for Film Cameras that match common legacy battery formats, including MR-9, PX625, PX13, and PX640-style replacements. Priority went to adapters with broad compatibility, solid materials such as copper or brass, and designs intended for exposure meters and classic camera bodies rather than generic electronic use.
We also considered whether an adapter is a true voltage-conversion solution or a no-conversion spacer-style fit, since that affects meter accuracy and which battery types you can use.
Quick Comparison
For most buyers, the fastest decision comes down to battery format and voltage needs. MR-9 and PX625 adapters are commonly used for older cameras and meters that originally relied on 1.35V mercury cells. PX640-style adapters are aimed at specific vintage models that need a different physical fit, such as certain Yashica and HM-N-compatible cameras.
If your camera’s meter is sensitive to voltage, look for an adapter that explicitly supports the battery type you plan to install. If you mainly need physical compatibility, a no-voltage-conversion adapter may be enough.
Key Buying Factors for Camera Battery Adapters for Film Cameras
Battery Type and Fit
Start with the original battery code printed in your camera manual or on the old cell. MR-9, PX625, PX13, and PX640 are not interchangeable in every camera, so matching the adapter to the exact form factor is the first step.
Voltage Handling
Some Camera Battery Adapters for Film Cameras simply adapt size, while others help approximate the original mercury-cell voltage. This matters for accurate exposure meter readings. If your camera meter was designed around 1.35V, check whether the adapter requires a zinc-air or hearing-aid battery, or whether it includes conversion guidance.
Material and Build Quality
Brass, copper, and solid-metal designs tend to hold up better and offer a more dependable contact than thin generic adapters. A snug, well-machined adapter is especially important in older camera compartments where tolerances can vary.
Compatibility Range
Look for adapters that explicitly mention the camera family you own, such as Olympus OM-1 or Yashica Electro series, if applicable. Broader compatibility is useful, but exact model support gives you more confidence.
Who Should Buy Which Camera Battery Adapters for Film Cameras?
If you shoot a classic SLR with an MR-9 or PX625 battery compartment, choose an adapter designed for that exact format and meter type. If you own a camera or exposure meter that uses PX640/HM-N sizing, pick a dedicated PX640 adapter instead of forcing a close match.
For photographers who want the simplest path to reviving an old meter, choose the adapter that most clearly matches your battery code, voltage needs, and camera model. That approach will save time and reduce the chance of unreliable readings.