ABB 3HAC16831-1 Replacement Battery for IRC5 Controller

Product Overview

ABB 3HAC16831-1 Replacement Battery for IRC5 Controller: Seamless Upgrade & Legacy System Compatibility

The ABB 3HAC16831-1 is the factory-specified lithium battery pack for the ABB IRC5 robot controller family, providing critical backup power to retain RAPID program memory, system parameters, and real-time clock data during power interruptions or planned shutdowns. As ABB’s IRC5 platform continues to serve as the backbone of thousands of industrial robot installations worldwide — spanning arc welding, material handling, assembly, and painting applications — maintaining a reliable supply of genuine or fully compatible 3HAC16831-1 batteries is essential to preventing unplanned downtime and costly re-commissioning.

Whether you are managing a fleet of IRB 1600, IRB 2600, IRB 4600, IRB 6640, or IRB 6700 robots, or operating a multi-robot cell coordinated through an IRC5 MultiMove controller, the 3HAC16831-1 battery pack is the single most critical consumable component in your preventive maintenance schedule. A depleted or failed battery results in loss of all stored RAPID programs, tool center point (TCP) calibration data, and axis configuration — requiring full re-teaching and system re-commissioning, which can take hours or days depending on the complexity of the installation.

Compatibility Comparison Table

Seamless Upgrade Solutions: Migration-Ready Components for IRC5 Systems

A battery replacement is rarely performed in isolation. In most IRC5 modernization and preventive maintenance scenarios, the 3HAC16831-1 is replaced as part of a broader system health check or upgrade campaign. During this process, engineers commonly inspect and replace the IRC5 main computer unit (DSQC 639 or DSQC 1000), the axis computer board (DSQC 668), and the I/O system modules such as the DSQC 652 digital I/O unit or DSQC 651 analog I/O module. These components share the same IRC5 controller backplane and are subject to the same operational aging cycles as the battery.

For installations migrating from an older S4C+ or S4Cplus controller platform to the IRC5 architecture, the battery replacement is one of the first steps in the transition checklist. The IRC5 controller’s modular design — with its separate drive units, axis computers, and communication interface boards — means that upgrading the backup battery does not require any changes to the robot’s RAPID programming structure, provided the memory backup procedure is followed correctly using RobotStudio or the FlexPendant teach pendant.

In multi-robot cells using IRC5 MultiMove, each controller cabinet requires its own 3HAC16831-1 battery. Facilities running coordinated motion between an IRB 6700 and an IRB 2600 on a shared positioner must maintain battery health across all cabinets simultaneously to prevent desynchronized recovery after a power event. The DSQC 1000 main computer, which manages the MultiMove coordination logic, is particularly sensitive to memory loss caused by battery failure.

For sites upgrading their fieldbus infrastructure alongside the battery replacement — transitioning from PROFIBUS DP to PROFINET or EtherNet/IP — the DSQC 688 PROFINET device module or the DSQC 669 DeviceNet master/slave board may also be part of the upgrade scope. These communication modules are installed in the IRC5 controller’s option slot and do not interfere with the battery replacement procedure. Similarly, if the installation includes a DSQC 643 power supply unit showing aging symptoms, it is best practice to replace it concurrently with the battery to avoid a second maintenance window.

Panel-mounted IRC5 installations in compact control cabinets — common in press-tending and machine-tending applications — may also require inspection of the teach pendant cable (3HAC031683-001) and the FlexPendant unit itself (3HAC028357-001) during the same service visit, as cable fatigue and connector wear are common failure modes in high-cycle environments.

Retrofit Guidance FAQ

Q: Do I need to back up my RAPID programs before replacing the 3HAC16831-1 battery?
A: Yes. Always perform a full system backup via RobotStudio or the FlexPendant (Backup & Restore function) before replacing the battery. Although the replacement is designed to be performed with the controller powered on (hot-swap procedure), a backup ensures full recovery in the event of any interruption during the swap.

Q: Is the 3HAC16831-1 compatible with all IRC5 cabinet variants?
A: Yes. The 3HAC16831-1 is compatible with the IRC5 Single Cabinet, IRC5 Dual Cabinet, IRC5 Panel Mounted Controller (IRC5P), and IRC5 Compact variants. The battery connector and form factor are identical across all IRC5 revisions from M2004 onward.

Q: Will replacing the battery affect my PROFIBUS, PROFINET, or DeviceNet communication configuration?
A: No. The communication module configuration (including node addresses, baud rates, and I/O mapping) is stored in the main computer’s flash memory, not in the battery-backed RAM. A battery replacement does not affect fieldbus communication settings.

Q: How do I know when the battery needs replacement?
A: The IRC5 FlexPendant will display a Battery Charge Low event message (Event Log ID 38213 or similar) when the battery voltage drops below the threshold. ABB also recommends proactive replacement every 3–5 years as part of the IRC5 Preventive Maintenance schedule.

Q: Can I replace the battery myself, or do I need an ABB service engineer?
A: The 3HAC16831-1 replacement is classified as a user-serviceable procedure in the IRC5 Product Manual. The battery is accessible from the front of the controller cabinet without removing any circuit boards. Follow the hot-swap procedure in the IRC5 Product Manual (document 3HAC021313-001) to avoid memory loss.

Q: What is the physical installation space requirement?
A: The battery occupies a dedicated slot in the IRC5 main computer assembly. No additional cabinet space is required. The replacement unit is dimensionally identical to the original, ensuring a direct drop-in fit without any bracket modification or cable rerouting.

Warranty Assurance

Every ABB 3HAC16831-1 battery unit shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to shipment, each unit undergoes functional verification including voltage output check and connector integrity inspection to ensure it meets the operational specifications required for IRC5 controller memory backup.

In the event of a confirmed defect within the warranty period, TOPNLMS provides direct replacement support with priority processing. Our after-sales response team is available to assist with fault diagnosis, return authorization, and expedited replacement dispatch to minimize your system downtime. We maintain bonded stock of the 3HAC16831-1 to support same-day or next-business-day shipment for urgent replacement orders.

All units are shipped with appropriate anti-static and temperature-controlled packaging to preserve battery integrity during international transit. Export documentation, including commercial invoice, packing list, and HS Code 8507.60.90 classification, is prepared for all cross-border shipments to facilitate smooth customs clearance.

For volume procurement, OEM integrators, and MRO stocking programs, TOPNLMS offers framework pricing and dedicated account support. Contact our technical sales team to discuss lead times, quantity pricing, and consignment stock arrangements.