Ritar 6V 4.5Ah UPS Replacement Battery 

The Ritar 6V 4.5Ah UPS Replacement Battery is a compact, maintenance-free sealed lead-acid (SLA) battery designed for use in small UPS systems, emergency lighting, alarm systems, portable medical devices, and general-purpose electronics. Using advanced Absorbent Glass Mat (AGM) technology, this battery offers stable performance, deep discharge protection, and long service life in both standby and cyclic applications. Its sealed, spill-proof construction allows for safe use in any orientation, making it ideal for residential, commercial, and light industrial applications.

Product Features

Compact and Versatile Power

The 6V 4.5Ah capacity delivers reliable, short-duration backup power for smaller devices and systems. It is suitable for UPS units, exit signs, fire panels, and DC-powered tools.

Maintenance-Free AGM Technology

Sealed AGM design requires no watering or maintenance. The battery operates safely in various positions without the risk of leakage or acid spills.

Dependable Cycle and Float Performance

Built for both standby (float) and cyclic use, the Ritar 6V 4.5Ah battery ensures consistent power delivery with excellent recovery after deep discharge cycles.

Durable and Shock-Resistant Build

Encased in a high-strength ABS housing, the battery is resistant to vibration, impact, and temperature fluctuations, making it suitable for harsh operating environments.

Wide Application Support

Compatible with a variety of small-scale electronic systems including emergency backup devices, weighing scales, exit lighting, and security systems.

Product Specifications

• Brand: Ritar
• Model: RT645 or equivalent
• Nominal voltage: 6V
• Capacity: 4.5Ah at 20HR rate
• Battery type: Sealed Lead Acid (SLA), AGM
• Terminal type: Faston Tab 187 or 250 (F1/F2)
• Dimensions (L x W x H): Approx. 70mm x 47mm x 101mm
• Weight: Approx. 0.9–1.0kg
• Case material: ABS (optional flame-retardant)
• Charging voltage (standby use): 6.75V – 6.90V
• Charging voltage (cyclic use): 7.20V – 7.50V
• Max charging current: 1.35A
• Operating temperature range:
  • Discharge: -15°C to 50°C
  • Charge: 0°C to 40°C
  • Storage: -15°C to 40°C
• Float service life: 3–5 years (in standby mode)
• Certifications: ISO9001, CE, UL (varies by batch)
• Warranty: 1-year limited (may vary by distributor)