Reliable, High-Rate Energy Storage for Network & Enterprise Backup

Maintain consistent uptime for critical infrastructure with the industrial-grade Santak Castle C12-18Ah 12V UPS Backup Battery. Meticulously designed to provide peak standby power under high-rate discharge conditions, this battery is optimized for the demanding environment of professional online UPS systems, network server racks, precision security grids, and emergency electrical systems. Leveraging cutting-edge Valve Regulated Lead-Acid (VRLA) and dense Absorbent Glass Mat (AGM) technologies, the Castle C12-18Ah delivers stable current delivery and extended operational longevity without requiring regular electrolyte additions.

Key Features & Benefits

• 100% Maintenance-Free Operation: Advanced VRLA sealed engineering enables internal oxygen gas recombination up to 99%, completely eliminating the need to top up fluid levels or handle open acid hazards.
• High-Discharge AGM Plate Design: Crafted with thick, ultra-pure lead-calcium-tin alloy plate grids that minimize internal electrical resistance, ensuring your UPS receives immediate, high-density current during grid blackouts.
• Exceptional Standby Shelf Life: Low self-discharge rates (under 3% per month at 25C) guarantee that the battery preserves its electrical potential safely over long standby periods, remaining ready for rapid deployment.
• Rugged ABS Plastic Casing: Built into an impact-resistant, non-conductive ABS plastic enclosure that effectively shields the interior cells against mechanical shocks, environmental stress, and localized thermal fluctuations.
• Spill-Proof & Orientation Flexible: The leak-proof structure prevents hazardous acid fumes or fluid leaks, allowing the battery to be safely integrated into multiple physical orientations inside tightly packed battery cabinets or server enclosures.
• Superior Deep Discharge Resilience: Engineered to withstand harsh deep-cycling demands and efficiently bounce back to its full rated state-of-charge when utility main power returns, extending your equipment lifecycle.

Technical Specifications

Specification	Details
Brand	Santak Electronics (An Eaton Brand)
Series Model	Castle Series C12-18Ah
Battery Technology	Sealed Lead-Acid (SLA) / Valve Regulated Lead-Acid (VRLA) / AGM
Nominal Voltage	12 Volts (12V DC)
Nominal Capacity	18 Ah (at 20-Hour Rate to 1.75V per cell)
Terminal Style	Bolt-and-Nut Insert Terminals (Ensures secure, low-resistance connections)
Design Life Expectancy	Up to 35 Years in standby floating configurations (at 25C)
Casing Material	High-Impact, Heavy-Duty ABS Plastic
Dimensions (L x W x H)	7.13 3.03 6.57 inches (181 77 167 mm)
Total Height (With Terminals)	6.57 inches (167 mm)
Approximate Net Weight	Approximately 5.30 kg (11.7 lbs)