NCTS1290 12V 9Ah UPS Battery – Original NCTS Sealed Lead-Acid (VRLA) Battery for UPS, Backup Power & Security Systems

The NCTS1290 is a 12-volt, 9-ampere-hour (9Ah) sealed lead-acid (SLA) battery developed by NCTS Power for its UPS lineup and general backup power applications.
Built with Valve-Regulated Lead-Acid (VRLA) and Absorbed Glass Mat (AGM) technology, it provides stable discharge characteristics, long service life, and full maintenance-free operation.

It is widely used in NCTS NU-series and QSTROM UPS models, as well as third-party UPS units, alarm systems, and emergency lighting setups.

Technical Characteristics:

• Nominal Voltage: 12 V DC

• Rated Capacity: 9 Ah (20-hour rate)

• Design Life: 3–5 years (float application at 25 °C)

• Float Charge Voltage: 13.5 – 13.8 V DC

• Cycle Charge Voltage: 14.4 – 15.0 V DC

• Internal Resistance: ≤ 22 mΩ (fully charged)

• Self-Discharge Rate: ≤ 3 % per month (at 25 °C)

• Operating Temperature Range:

  • Discharge: –15 °C to 50 °C

  • Charge: 0 °C to 40 °C

  • Storage: –15 °C to 40 °C

• Terminal Type: F2 (6.35 mm Faston)

• Casing Material: ABS, flame-retardant black shell

• Use Applications: UPS power modules, emergency lighting, telecom backup, and renewable energy storage