2Pack 3V 1800mAh NonRechargeable Lithium Replacement Battery for models 1756BA1, 1756L1, BR2, 3AAB Key benefits Direct replacement for 1756BA1, 1756L1, BR2, 3AAB compatible modules, providing a quick and reliable swap without modification. Nominal 3V voltage and 1800mAh capacity for extended backup of memory and realtime clock functions. Nonrechargeable disposable lithium chemistry for long storage life and steady voltage delivery during use. Pack of two batteries helps ensure you have a ready spare for maintenance or rapid replacement. What this battery does and why you need it Maintains memory, configuration and clock settings in controllers and control modules when main power is removed. Helps prevent data loss and downtime caused by depleted backup batteries. Designed to match the original battery form factor and electrical specifications for straightforward installation. Key attributes Function: Backup power for memory and RTC in industrial controllers and related modules. Compatibility: Replacement for models 1756BA1, 1756L1, BR2, 3AAB. Voltage: 3V nominal. Capacity: 1800mAh typical. Chemistry: Nonrechargeable disposable lithium cell. Quantity: Two batteries per pack. Performance and handling Provides stable nominal voltage under typical backup loads for the specified capacity. Singleuse chemistry means no charging is required or recommended. Store in a cool, dry location until ready for installation. Typical use scenarios Industrial automation maintenance: depleted backup batteries in control cabinets to restore memory and RTC functions during scheduled service. Field service kit: Keep a pack on hand for quick swaps during troubleshooting or component replacement on PLC and automation hardware that accept 1756BA1 style batteries. Instrumentation and data logging: Use as a replacement battery for compatible modules that require a 3V 1800mAh nonrechargeable lithium backup. What to check before Confirm your equipment lists one of these compatible model numbers 1756BA1, 1756L1, BR2, or 3AAB as the required battery type. Verify that a nonrechargeable disposable lithium cell with 3V and 1800mAh meets your device specifications. This 2pack provides straightforward, specificationmatched replacement batteries for maintenance and backup needs in compatible control and instrumentation equipment.