12V 18Ah VRLA AGM Battery – Maintenance-Free, F2 Terminals

For technicians servicing UPS backup systems in server rooms, this 12V 18Ah valve-regulated lead-acid battery delivers dependable standby power. Its absorbent glass mat construction keeps electrolyte immobilized, so it works in any orientation without leaks. The F2 spade terminals accept standard 6.35 mm connectors for quick installation.

Key specifications

• Nominal voltage: 12 V
• Capacity: 18 Ah (C20)
• Battery type: VRLA AGM, maintenance-free
• Terminal type: F2 (spade 6.35 mm)
• Design life: 5 years (Eurobat 'Standard Commercial')
• Max discharge current: 270 A (5 s)
• Internal resistance: approx. 13 mΩ at 25°C
• Float charge voltage: 13.5 – 13.8 V at 25°C
• Cyclic charge voltage: 14.4 – 15.0 V at 25°C
• Max charge current: 5.4 A
• Operating temperature (discharge): -20°C to 60°C
• Operating temperature (charge): -10°C to 60°C
• Self-discharge: less than 3% per month at 25°C
• Case material: ABS plastic
• Certifications: CE, ISO9001, ISO14001

Why choose it

The valve-regulated design eliminates the need to add water or check electrolyte levels, reducing maintenance costs. Spill-proof and vibration-resistant, it suits mobile and stationary applications alike. Low self-discharge means it holds charge during extended storage, ready when needed.

Ideal use cases

• Uninterruptible power supplies (UPS) for servers and network equipment
• Alarm and security systems requiring reliable backup
• Emergency lighting and exit signs
• Medical devices and mobility equipment
• Electric scooters and small electric vehicles

Good to know

Charge within the recommended voltage ranges to maximize service life. Avoid deep discharges below 10.5 V. For best performance, store in a cool, dry place and recharge every 6 months if unused. Always use a compatible charger with current limiting.