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Small rectangular replacement battery for Mitsubishi MELSEC Q series PLCs

Cameron Sino MELSEC Q replacement battery

SKU CH-JREF-ERHHF

Replacement battery maintains memory backup for MELSEC Q series PLCs including Q02CPU, Q06HCPU, Q12HCPU and Q25HCPU models

  • Reliable backup power for MELSEC Q PLCs
  • Compatible with Q02CPU, Q02HCPU and Q06HCPU models
  • Supports Q12HCPU, Q12PHCPU and Q12PRHCPU variants
  • Works with Q170HBATC, Q172HCPU and Q173HCPU units
  • Fits Q25HCPU, Q25PHCPU and Q25PRHCPU controllers

Cameron Sino MELSEC Q replacement battery

This Cameron Sino replacement battery is built for Mitsubishi MELSEC Q series programmable logic controllers. It provides backup power to retain critical system memory during power loss. Compatible models include Q02CPU, Q02HCPU, Q06HCPU, Q12HCPU, Q12PHCPU, Q12PRHCPU, Q170HBATC, Q172HCPU, Q173HCPU, Q25HCPU, Q25PHCPU and Q25PRHCPU.

Installation and common issues

The battery slots into the designated holder on the CPU module; no soldering or special tools are required. Ensure the controller is powered down before removal to avoid shorting the contacts. A frequent mistake is inserting the cell with reversed polarity, which prevents memory retention. Verify the connector orientation matches the original unit before closing the housing.

Pre-order checks

Confirm the exact CPU model printed on your module matches the supported list above. Check that the existing battery connector type and voltage rating correspond to the replacement specifications. Ensure the PLC firmware version does not impose proprietary battery authentication that would block third-party cells. This product is not for systems requiring hot-swappable redundant power modules or proprietary encrypted battery handshakes.

Highlights

  • Reliable backup power for MELSEC Q PLCs
  • Compatible with Q02CPU, Q02HCPU and Q06HCPU models
  • Supports Q12HCPU, Q12PHCPU and Q12PRHCPU variants
  • Works with Q170HBATC, Q172HCPU and Q173HCPU units
  • Fits Q25HCPU, Q25PHCPU and Q25PRHCPU controllers

Specifications

BrandCameron Sino
ModelMitsubishi Q02CPU Q02HCPU Q06HCPU Q12HCPU Q12PHCPU Q12PRHCPU Q25HCPU Q25PHCPU Q25PRHCPU Q170HBATC Q172HCPU Q173HCPU MELSEC Q

Questions about this item

How do I verify the battery is holding memory on my Q12HCPU after installation?

Power down the PLC, wait several minutes, then restart and confirm the program and retained data are intact without a battery error on the CPU display.

What comes in the package and do I need any extra hardware?

The box contains the Cameron Sino replacement battery only; no cables, mounting brackets or tools are included and none are required for the standard CPU socket.

Which model numbers does this battery replace across the MELSEC Q range?

It covers Q02CPU, Q02HCPU, Q06HCPU, Q12HCPU, Q12PHCPU, Q12PRHCPU, Q170HBATC, Q172HCPU, Q173HCPU, Q25HCPU, Q25PHCPU and Q25PRHCPU.

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