View wishlist“Newstar 12V 28Ah Sealed Lead Acid UPS Battery (AGM VRLA) 33-2812” has been added to your wishlist
12V 5Ah Capacity: Reliable backup power for standby and light cyclic applications
AGM VRLA Technology: Sealed, maintenance-free and spill-proof design
Long Service Life: Designed for up to 5 years floating life at 25°C
Low Self-Discharge: Retains charge during storage and infrequent use
High Reliability: Stable output with high-quality internal plates
Safe Indoor Use: Non-spillable construction with safety valve regulation
Certified Quality: Meets IEC, BS, JIS and Eurobat standards
Flexible Installation: Can be installed in any orientation (except inverted)
The Newstar 33-0512 (12V 5Ah) is a sealed lead-acid (VRLA) battery engineered for reliable backup power in critical standby and cyclic applications. Built using AGM (Absorbent Glass Mat) technology, it delivers stable performance, low self-discharge, and maintenance-free operation. Designed for long service life, the 33-0512 is ideal for UPS systems, fire and security equipment, emergency lighting, and communication systems. Its sealed, non-spillable construction ensures safe indoor installation and dependable operation across a wide range of environments.
Brand: Newstar
Model: 33-0512
Battery Type: Sealed Lead Acid (VRLA)
Technology: AGM (Absorbent Glass Mat)
Nominal Voltage: 12V
Rated Capacity: 5.0Ah (20-hour rate)
Internal Resistance: Approx. 21mΩ (fully charged at 25°C)
Terminal Type: T1 / T2
Dimensions (L × W × H): 90 × 70 × 101 mm
Total Height: 106 mm
Approx. Weight: 1.70 kg ±3%
Container Material: ABS (UL94-HB)
Design Life: 5 years (float use at 25°C)
Uninterruptible Power Supplies (UPS)
Fire alarm & fire protection systems
Security & access control systems
Emergency lighting
Telecommunication & communication equipment
Electric bicycles & mobility equipment
General power backup systems
Operating Temperature Range:
40°C: 102% capacity
25°C: 100% capacity
0°C: 85% capacity
−15°C: 65% capacity
Self-Discharge:
After 3 months: ~91%
After 6 months: ~82%
After 12 months: ~64%
Warranty: This battery is supplied with a 1-year warranty when used exclusively for UPS backup applications under normal operating conditions.
Important Usage Notice:
This battery is NOT suitable for use in:
Cars or automotive starting
Generators or engine starting applications
Wheelchairs or mobility devices
Golf carts
Electric bikes (e-bikes)
Any traction, cyclic, or motor-driven equipment
⚠️ Warranty is strictly limited to UPS backup use only.
Any use outside UPS backup applications will void the warranty, and no claims will be accepted for non-UPS usage.
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