Sealed AGM battery Technocell TCL18-12 12V 18Ah, maintenance-free lead-acid

Sealed AGM battery Technocell TCL18-12 is a 12V, 18Ah maintenance-free lead-acid battery using Absorbent Glass Mat (AGM) technology. Designed for both standby and cyclic applications, this compact sealed battery provides a stable 12V power source in a compact housing and requires no routine electrolyte maintenance. The construction reduces gas emission during normal operation and allows installation in multiple orientations, making it suitable for confined spaces and equipment enclosures.

Advantages

The AGM design delivers low internal resistance for reliable discharge and recharge performance. Maintenance-free lead-acid construction eliminates the need to add water or monitor electrolyte levels. The sealed casing and recombination technology minimize gas release and allow safe operation in ventilated indoor environments. Its compact size and standard terminal configuration simplify replacement and integration into existing 12V systems.

Suitable for

• Uninterruptible power supplies (UPS) for small to medium systems
• Alarm and security systems
• Emergency and exit lighting
• Small off-grid or backup solar setups
• Mobility devices and portable medical equipment

Key specifications

• Nominal voltage: 12 V
• Rated capacity: 18 Ah (at specified discharge conditions)
• Battery type: Sealed lead-acid, Absorbent Glass Mat (AGM)
• Maintenance: Maintenance-free, sealed construction
• Application modes: Suitable for standby and cyclic use

How to use

Install the battery in accordance with the equipment manufacturer’s instructions, observing correct polarity and secure terminal connections. Charge the battery with a charger or charging system designed for sealed lead-acid/AGM batteries and follow recommended charge voltages and temperature compensation guidelines supplied by the system or charger manufacturer. Avoid deep discharges where possible to maximize cycle life and store the battery in a cool, dry place if not in regular use. Dispose of or recycle the battery per local regulations for lead-acid batteries.

Usage recommendations

For optimal service life, use a charger with AGM-compatible charge profiles, avoid long-term float at excessive voltage, and perform periodic state-of-charge checks in standby applications. Replace batteries of the same type and capacity when performing maintenance to ensure reliable backup performance.