Online USV BCY800 Replacement Battery for YUNTO 800 (12V 9Ah, VRLA AGM)

When the battery inside your Online USV YUNTO 800 UPS reaches the end of its service life, the system can no longer provide reliable backup power during outages, leaving connected equipment vulnerable to data loss and hardware damage. This replacement battery restores full runtime and ensures your critical devices stay protected.

Who is it for

IT administrators, office managers, and home users who rely on the Online USV YUNTO 800 uninterruptible power supply to safeguard computers, network gear, and other sensitive electronics. It is ideal for anyone needing a dependable, cost-effective way to extend the life of their UPS without replacing the entire unit.

Main features

• Sealed lead-acid (SLA) battery with VRLA AGM technology – maintenance-free and leak-proof
• 12 V nominal voltage and 9 Ah capacity, delivering 108 Wh of energy
• Designed specifically for the Online USV YUNTO 800 UPS – perfect fit and compatibility
• F2 (Faston 250) terminals for easy, secure connection
• Long service life: 3-5 years in float standby applications
• Up to 1000 recharge cycles at 30% depth of discharge
• Wide operating temperature range: -15°C to 50°C (discharge), -15°C to 40°C (charge)
• Low self-discharge rate: less than 3% per month at 20°C
• Robust ABS housing (UL94-HB) for durability
• CE and UL Recognized Component certifications

Specifications

• Battery type: Sealed Lead-Acid (SLA), VRLA AGM
• Voltage: 12 V
• Capacity: 9 Ah
• Energy content: 108 Wh
• Terminal type: F2 (Faston 250)
• Internal resistance: approx. 19 mΩ
• Max. discharge current (5s): 135 A
• Max. charging current: 2.7 A
• Operating temperature (discharge): -15°C to 50°C
• Operating temperature (charge): -15°C to 40°C
• Self-discharge rate: less than 3% per month at 20°C
• Housing material: ABS (UL94-HB)
• Certifications: CE, UL Recognized Component
• Recharge cycles: up to 1000 cycles at 30% DOD

Tips

To maximize battery life, keep the UPS in a cool, dry environment and avoid deep discharges. Regularly test the battery under load to ensure it still provides adequate runtime. When replacing, always disconnect the UPS from mains power and follow proper safety procedures.