Newstar HR1228W 12V High-Rate UPS Battery (28W/Cell, AGM VRLA)

The Newstar HR1228W (12V, 28 Watts/Cell) is a high-rate valve-regulated lead-acid (VRLA) battery specifically designed for UPS backup systems and other standby power applications requiring high discharge performance over short durations. Built with AGM (Absorbent Glass Mat) technology, it delivers reliable power, fast discharge capability, and maintenance-free operation. With a compact design and stable output, the HR1228W is ideal for UPS systems used in IT, networking, fire alarm, and emergency backup environments

Technical Specifications

• Brand: Newstar

• Model: HR1228W

• Battery Type: Valve Regulated Lead Acid (VRLA)

• Technology: AGM

• Nominal Voltage: 12V (6 cells per unit)

• Rated Capacity:

  • 28 Watts/Cell @ 1.67V (15-minute rate)

  • 7.5Ah @ 20-hour rate (10.5V)

• Internal Resistance: Approx. 21mΩ (fully charged at 25°C)

• Design Life: 5 years (float use @ 25°C)

• Eurobat Classification: 3–5 years (standard commercial)

• Maximum Charging Current: 2.25A

• Maximum Discharge Current: 112.5A (5 seconds)

Physical Dimensions

• Length: 151 ±1.5 mm

• Width: 65 ±1 mm

• Height: 94 ±1 mm

• Total Height: 100 ±1 mm

• Approx. Weight: 2.2 kg ±4%

• Terminal Type: T1 / T2

Charging Information

• Float Charging Voltage (25°C): 13.60 – 13.80V

• Cyclic Charging Voltage (25°C): 14.50 – 15.00V

• Temperature Compensation:

  • Float: −18 mV/°C/Block

  • Cycle: −30 mV/°C/Block

Operating Conditions

• Discharge Temperature Range: −15°C to 50°C

• Charge Temperature Range: −10°C to 50°C

• Storage Temperature Range: −20°C to 50°C

• Capacity Retention (10HR rate):

  • 40°C: 102%

  • 25°C: 100%

  • 0°C: 85%

  • −15°C: 65%

Applications

✅ Suitable For

• UPS systems (primary use)

• IT & networking backup

• Fire alarm panels

• Security & access control systems

• Emergency lighting systems

❌ NOT Suitable For

• Cars or automotive starting

• Generators or engine starting

• Wheelchairs or mobility devices

• Golf carts

• Electric bikes (e-bikes)

• Solar or deep-cycle applications

Warranty & Usage Disclaimer

Warranty:
This battery carries a 1-year warranty when used exclusively for UPS backup applications under normal operating conditions.

Important:
This battery is designed ONLY for UPS backup use.
Use in cars, generators, wheelchairs, golf carts, e-bikes, solar systems, engine starting, or any non-UPS application will void the warranty. No warranty claims will be accepted for use outside UPS backup systems.