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Honeywell TC-BATT01 Lithium PLC Backup Battery

The Honeywell TC-BATT01, also cataloged as the TC-BATT01 Lithium PLC Backup Battery, provides memory retention power for Honeywell controller assemblies during primary power interruption conditions. The module supplies a 3.0 VDC lithium backup source for preserving stored controller data.

Hardware Specifications

Parameter	Specification
Model	TC-BATT01
Brand	Honeywell
Product Type	Lithium PLC Backup Battery
Origin	USA
Battery Chemistry	Non-rechargeable Lithium
Nominal Voltage	3.0 VDC
Rated Capacity	1700 mAh
Connector Type	Polarized application-specific connector
Weight	Approximately 0.068 kg
Dimensions	34 mm (H) x 17 mm (W) x 17 mm (D)
Operating Temp	Not specified
Power Consumption	Standby backup application, battery powered
Storage Life	Up to 10 years at 20 deg C ambient conditions
Installation Method	Controller chassis or processor module mounting

Honeywell Process Control Memory Backup Characteristics

The TC-BATT01 is designed for controller memory retention functions within Honeywell industrial control platforms. The lithium cell provides a stable backup voltage source for maintaining stored application programs, configuration parameters, and processor memory data when the primary controller power supply is unavailable.

For Honeywell controller environments, backup battery operation is separated from normal control power circuits. The module does not provide field I/O power or process signal excitation. Instead, it supports internal memory preservation circuits associated with processor hardware.

Moreover, Honeywell controller architectures may include analog and digital I/O interfaces using technologies such as 4-20 mA HART loop protocol, FOUNDATION Fieldbus, or Profibus PA connectivity. The TC-BATT01 functions independently from these communication interfaces and only maintains controller memory backup requirements.

Frequently Asked Questions

Q: Is the Honeywell TC-BATT01 a rechargeable battery module?
A: No. The TC-BATT01 uses a non-rechargeable lithium cell design and requires replacement after battery service life expiration.

Q: What electrical function does the TC-BATT01 provide inside a controller assembly?
A: The module provides a 3.0 VDC backup supply for maintaining processor memory contents during loss of the primary power source.

Q: Does the TC-BATT01 supply power to external I/O devices?
A: No. The battery module is intended for internal memory retention circuits and does not provide operating power for external field devices or I/O modules.

Field Installation Guidelines

• Verify controller compatibility and battery model identification before installation.
• Disconnect the controller power source according to the applicable maintenance procedure before replacing the battery.
• Confirm correct polarity alignment between the battery connector and controller interface.
• Route the battery connection away from high-current power wiring and strong electromagnetic interference sources.
• Inspect connector contacts for contamination or mechanical damage before installation.
• Follow local regulations for disposal of lithium battery components after replacement.

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