Description

Honeywell 51199942-300 TC-BATT03 C300 System Backup Battery

Configured for standby energy retention in C300 System controller environments, the Honeywell 51199942-300 TC-BATT03 (51199942-300 backup battery) provides direct electrical support for non-volatile controller memory and clock retention during primary power interruption events within distributed control architectures.

Suffix Breakdown & Model Matrix

The model designation 51199942-300 TC-BATT03 is defined as a single ordered part number. No validated sub-component decoding or functional segmentation is specified in manufacturer data.

Hardware Specifications

Parameter	Specification
Model	51199942-300 TC-BATT03
Brand	Honeywell
Origin	USA
Weight	0.12 kg
Dimensions	6.5 x 4.3 x 2.2 cm
Operating Temp	-20 to 60 deg C (controller), -20 to 35 deg C (storage long-term)
Power Consumption	Standby current < 5 µA, charge current 15 mA (trickle)
Nominal Voltage	3.6 V
Capacity	2200 mAh
Function	Backup supply for C300 system memory retention

Honeywell C300 System Energy Retention Characteristics

In Honeywell C300 system architectures, backup battery operation is integrated into controller-level non-volatile retention logic, supporting uninterrupted preservation of configuration registers and real-time clock state. Electrical interface behavior is consistent with low-leakage standby design (< 5 µA controller leakage), ensuring minimal discharge during idle system states.

Within process control DCS environments, subsystem energy buffering aligns with 4-20 mA loop-based field device continuity requirements and supports stable controller restart sequencing after power restoration events. Channel isolation characteristics are defined at controller power domain level rather than battery module level.

Frequently Asked Questions (FAQ)

Q: Does the 51199942-300 battery support hot-swap replacement during controller operation?
A: Replacement behavior is system-dependent; controller design determines whether memory retention is maintained via parallel energy buffering during swap events.

Q: What is the expected leakage behavior during standby mode?
A: Controller standby leakage is specified as < 5 µA, representing ultra-low discharge under non-charging conditions.

Q: Is the battery directly involved in field I/O signal processing?
A: No. The battery is isolated from 4-20 mA or fieldbus signal paths and serves only controller memory and timing retention functions.

Field Installation Guidelines

Install battery only in de-energized controller conditions unless system documentation explicitly permits live maintenance. Observe polarity alignment on battery terminal interface prior to insertion. Avoid mechanical stress on connector housing during seating. Maintain separation from high-noise power wiring to prevent incidental coupling during controller servicing. Ensure enclosure sealing integrity after replacement to preserve environmental compliance limits defined for controller operation.

Specifications

• Brand: Honeywell

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems