Description
AG400-12-T2: backup power you can count on
Sealed reliability for your critical systems
The AG400-12-T2 is the 12 V – 40 Ah sealed lead-acid battery from the ON LITE AG series, designed to deliver stable, reliable backup power to UPS battery banks, telecommunications and solar installations. Built on proven AGM (Absorbent Glass Mat) technology with VRLA (Valve Regulated Lead Acid) safety valves, it combines high-performance plates and electrolyte in a fully sealed case.
With a design life of 12 years in float service at 25°C, it is built for installations where every replacement costs time and downtime: fewer interventions over the life of the system and a stable energy reserve for longer.
Key benefits and features
- Sealed AGM VRLA technology: the electrolyte is absorbed in glass-fibre separators and a safety valve regulates the internal pressure. The result: no acid leakage, no topping up, no maintenance.
- Ready for demanding discharges: heavy-duty plates and an internal resistance of approx. 9.0 mΩ when fully charged allow it to deliver up to 400 A for 5 seconds.
- Long life and low self-discharge: design life of 12 years in float service at 25°C. In storage it retains about 82% of its charge after 6 months and 64% after 12 months.
- Stable performance across temperatures: at -15°C it still delivers 65% of its rated capacity, 85% at 0°C and up to 102% at 40°C. For the longest service life, install it in an environment close to 25°C.
- Robust, certified construction: automated assembly, copper M6 threaded terminals and an ABS (UL94HB) or flame-retardant ABS (UL94-V0) case. It meets IEC, BS, JIS and Eurobat standards and is CE and UL certified.
- Safe transport: designed to be transported safely by road, rail, sea and air.
Key technical details
| Parameter | Specification |
|---|---|
| Technology | Sealed lead-acid AGM VRLA |
| Nominal voltage | 12 Vdc (6 cells) |
| Rated capacity | 40 Ah (20-hour rate at 25°C) |
| Design life | 12 years in float service at 25°C |
| Float charge voltage | 13.50 – 13.80 Vdc at 25°C |
| Cycle charge voltage | 14.40 – 15.00 Vdc at 25°C |
| Max. discharge current | 400 A for 5 seconds |
| Internal resistance | approx. 9.0 mΩ (fully charged at 25°C) |
| Capacity vs. temperature | 65% at -15°C – 85% at 0°C – 100% at 25°C – 102% at 40°C |
| Terminals | M6 threaded (T2) |
| Dimensions (L x W x H) | 196 x 165 x 173 mm (height including terminals) |
| Weight | 12 kg (±3%) |
| Case | ABS (UL94HB) / flame-retardant ABS (UL94-V0) |
| Standards and certifications | IEC, BS, JIS, Eurobat – CE, UL |
Why choose the AG400-12-T2?
Choosing the AG400-12-T2 means relying on a safe energy reserve, ready when you need it.
It is the ideal solution for:
- UPS battery banks: with 40 Ah and M6 threaded terminals, it is the ideal building block for battery cabinets and high-power UPS units that must support the load for long periods.
- Telecommunications and power stations: ensures continuity for telecommunication equipment and power stations, where an interruption is not an option.
- Solar installations and marine applications: stores energy in solar installations and powers on-board equipment in the marine sector, with a sealed battery that needs no maintenance.
With its sealed construction, 12-year design life and compliance with the main international standards, the AG400-12-T2 is the reliable choice for anyone who installs and maintains high-power UPS units, battery banks and energy storage systems.
Immediate Availability | 12-Month Warranty | Specialist Technical Support
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