12V 18Ah AGM Sealed Lead-Acid Battery – Maintenance-Free, F2 Terminals

With a robust 18 Ah capacity and AGM technology, this 12V battery delivers dependable power for UPS systems, alarm panels, emergency lighting, medical equipment, and telecom infrastructure. Its sealed, maintenance-free design and wide operating temperature range ensure long service life and consistent performance.

Overview

The AKUMULATOR 12V/18AH-MB is a high-quality sealed lead-acid battery engineered for critical standby and cyclic applications. Absorbent Glass Mat (AGM) construction immobilizes the electrolyte, making the battery spill-proof and safe for use in any orientation except continuous inverted. The F2 faston terminals (6.35 mm) provide secure, low-resistance connections for reliable power delivery.

What stands out

• Maintenance-free AGM design – no watering or acid checks required
• High discharge capability: up to 180 A for 5 seconds
• Long service life: 3–5 years under normal float operation
• Wide operating temperature range: -20°C to 60°C (discharge)
• Low self-discharge: less than 3% per month at 25°C
• Durable ABS container resists impact and vibration

Technical details

• Nominal voltage: 12 V
• Rated capacity: 18 Ah (C20)
• Battery technology: AGM (Absorbent Glass Mat)
• Battery type: Sealed Lead-Acid (SLA)
• Terminal type: F2 (Faston Tab 6.35 mm)
• Maximum discharge current: 180 A (5 seconds)
• Maximum charging current: 5.4 A
• Internal resistance: approx. 15 mΩ
• Float charge voltage: 13.5–13.8 V (at 25°C)
• Cycle use voltage: 14.4–15.0 V (at 25°C)
• Operating temperature (discharge): -20°C to 60°C
• Operating temperature (charge): 0°C to 50°C
• Self-discharge rate: <3% per month (at 25°C)
• Container material: ABS
• Mounting orientation: any except continuous inverted use

Our verdict

For reliable backup power in demanding environments, this 12V 18Ah AGM battery offers an excellent balance of capacity, durability, and maintenance-free operation. Its versatile mounting and robust terminals make it a straightforward drop-in solution for a wide range of professional applications.