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The Honeywell 51199942‑300 Rechargeable Battery is an industrial backup power module designed to maintain controller memory and critical functions during power loss, ensuring stable operation across Honeywell legacy platforms.
Module Type: Rechargeable industrial backup battery
Battery Chemistry: Sealed rechargeable lithium‑based design
Nominal Voltage: Low‑voltage DC suitable for memory backup circuits
Capacity: Rated for long‑duration retention of controller RAM
Charge Method: Automatic charging via Honeywell RAM‑charger/backup module
Service Life: Typical lifespan 3–5 years depending on temperature and duty cycle
Operating Temperature: Industrial‑grade range for control cabinets
Mounting: Installed within Honeywell memory‑backup assemblies
Compatibility: Used in Honeywell C300, Series 620, and legacy RAM‑backup modules
Rechargeable Design: Automatically recharged during normal system operation
Long Backup Duration: Maintains controller RAM and configuration during extended outages
Sealed Construction: Maintenance‑free, leak‑proof industrial battery
High Reliability: Engineered for continuous use in harsh industrial environments
Integrated Protection: Built‑in safeguards against over‑charge and thermal stress
System Integration: Designed for seamless operation with Honeywell memory‑backup modules
Q: What does the 51199942‑300 battery support? A: It provides backup power for RAM‑based memory modules in Honeywell controllers.
Q: Is it rechargeable? A: Yes, it is a sealed rechargeable battery automatically charged by the system.
Q: How long does it last? A: Typical service life is 3–5 years depending on temperature and usage.
Q: Can the battery be replaced independently? A: Replacement depends on the specific Honeywell backup module; some require full module replacement.
Q: Which systems use this battery? A: Honeywell C300, Series 620, and legacy RAM‑backup assemblies.
