Product Overview
The ABB 35AE92A (ER0002081060005) is a factory-engineered rechargeable backup battery produced by ABB for use in its industrial automation platforms, including Advant OCS, MasterPiece 200 (MP200), Advant Controller 31, and selected S800 I/O controller racks. Its purpose is singular but critical: when the main control power is removed, the ABB 35AE92A (ER0002081060005) supplies the retention rail that keeps the CPU’s volatile RAM and real-time clock alive, preserving application code, configuration parameters, process setpoints, and time stamps so the controller can resume exactly where it left off after power is restored. In continuous-process plants, that single function can mean the difference between a routine restart and a day-long re-commissioning effort.
During normal operation, the ABB 35AE92A (ER0002081060005) is maintained by a float or trickle charge delivered through the controller’s internal charging circuit, so it remains at full capacity without operator intervention. The dominant and best-documented configuration is a 12 V DC, 7.2 Ah valve-regulated sealed lead-acid (VRLA/SLA) cell in an ABS housing with Faston blade terminals, giving it a conservative, predictable discharge profile that is well matched to ABB’s battery-monitoring and diagnostic logic. Under a light memory-hold load, the ABB 35AE92A (ER0002081060005) provides hold-up measured in hours to days, while its low self-discharge rate means it stays ready even through seasonal idle periods. It is important to understand that published records show multiple 35AE92A variants—including NiMH/NiCd packs and 3.6 V lithium designs for AC800M CPUs—so the voltage, capacity, chemistry, connector, and physical size must always be confirmed against the original battery label before ordering, as the order code alone does not guarantee an exact match.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | ABB 35AE92A |
| Order / Spare Part No. | ER0002081060005 |
| Manufacturer | ABB |
| Product Type | Rechargeable Memory Backup Battery (SLA/VRLA) |
| Primary Function | CPU volatile RAM and RTC retention on mains loss |
| Nominal Voltage | 12 V DC |
| Rated Capacity | 7.2 Ah (C20 rate, at 25°C) |
| Battery Chemistry | Valve-Regulated Sealed Lead-Acid (VRLA/SLA) |
| Float Charge Voltage | 13.6–13.8 V DC |
| Equalizing Charge Voltage | 14.4–14.8 V DC |
| Max. Charge Current | ≤ 0.7 A (0.1 C) |
| Charge Rate | 0.2 C (approx. 10 h to full charge) |
| Continuous Discharge Rate | 0.25 C (1.75 A) |
| Cycle Life | ≥ 500 cycles; typical 1000 cycles @ 80% DOD |
| Self-Discharge Rate | ≤ 3% per month at 25°C |
| Internal Resistance | ≤ 50 mΩ (fully charged) |
| Operating Temperature | -20°C to +60°C (discharge) |
| Charging Temperature | 0°C to +45°C (recommended) |
| Storage Temperature | -30°C to +60°C |
| Relative Humidity | 5%–95% RH, non-condensing |
| Terminal Type | Faston blade tabs / screw terminals |
| Enclosure Material | ABS plastic, leak-proof, valve-regulated |
| Protection Class | IP20 (for installation inside cabinet) |
| Dimensions (L×W×H) | 120 × 75 × 40 mm |
| Weight | Approx. 0.45–0.50 kg |
| Mounting Method | Vertical or horizontal in battery compartment or on bracket |
| Safety Standards | IEC 62133, UL 1642 |
| Compatible Platforms | Advant OCS, MasterPiece 200, AC31, S800 I/O |
| Lifecycle Status | Discontinued by ABB; available as original surplus / refurbished spare |
| Recommended Replacement | Every 3–5 years or on low-battery alarm |
