Rechargeable AGM Lead-Acid Battery Technocell TCL9-12 12V 9Ah (TCL9-12)

Technocell TCL9-12 is a sealed AGM rechargeable lead-acid battery with a nominal voltage of 12 V and a rated capacity of 9 Ah. Engineered for both standby and cyclic use, this maintenance-free battery provides reliable, leak-proof power in applications where a compact, sealed 12V source is required. The construction uses absorbed glass mat (AGM) technology to offer stable performance over a range of temperatures and to minimise self-discharge during storage.

Advantages

The battery delivers a consistent 12 V output and 9 Ah capacity in a compact, sealed housing that requires no electrolyte maintenance. AGM technology improves vibration resistance and reduces gassing compared with flooded cells, enabling safe indoor use in UPS cabinets, alarm panels and portable equipment. Low self-discharge makes the unit suitable for long-term standby applications, while sealed construction prevents leakage and simplifies installation and handling.

Suitable for

• Uninterruptible Power Supplies (UPS) for small electronics and network equipment
• Alarm and security systems, including control panels and sensors
• Emergency and exit lighting fixtures
• Small solar or off-grid setups requiring a 12 V backup source
• Portable devices and measurement equipment that need a sealed 12 V battery

Key specifications

• Nominal voltage: 12 V
• Rated capacity: 9 Ah (at specified discharge rate)
• Electrolyte type: Absorbed Glass Mat (AGM), sealed
• Design: Rechargeable lead-acid, maintenance-free
• Operational modes: Suitable for standby and cyclic applications
• Construction: Leak-proof, valve-regulated sealed design

How to use

Install the battery in a dry, well-ventilated location with the correct polarity and secure mounting to prevent movement and vibration. Use a compatible charger or charging circuit designed for sealed lead-acid/AGM batteries, following manufacturer charging voltages and current limits for 12 V batteries. Avoid deep discharge where possible; recharge the battery promptly after significant discharge to preserve cycle life. Observe standard safety precautions when handling lead-acid batteries, such as wearing eye protection and avoiding short-circuiting the terminals.

Usage recommendations

For optimal service life, store the battery in a cool, dry place and charge it every few months if kept in storage. When used in standby applications like UPS or alarm systems, perform periodic load tests and measure open-circuit voltage to detect capacity decline. Replace the battery at the end of its useful cycle life to ensure reliable backup power.