Sealed lead‑acid battery Aritech BS131N 12V 18Ah, maintenance‑free, rechargeable

Aritech BS131N 12V 18Ah is a sealed lead‑acid rechargeable battery designed to deliver reliable standby and auxiliary power for alarm systems, uninterruptible power supplies (UPS), emergency lighting and portable equipment. The battery is maintenance‑free and spill‑proof, allowing safe operation in enclosed installations and vertical or tilted mounting positions within recommended limits. Its compact rectangular case and standard terminal layout make it a straightforward replacement for many 12V systems requiring moderate capacity and predictable discharge behaviour.

Advantages

The sealed construction eliminates the need for electrolyte maintenance and reduces risk of leakage, while providing long shelf life when stored according to manufacturer guidelines. Rechargeable lead‑acid chemistry offers stable voltage under load and consistent performance across typical operating temperatures. The battery’s moderate 18Ah capacity balances run time and physical size, making it suitable where space is limited but reliable backup is required. Installation is simple due to a common terminal arrangement and a compact footprint that fits standard battery compartments.

Suitable for

• Alarm and security control panels
• Small to medium UPS units and backup power modules
• Emergency lighting systems
• Portable medical and diagnostic devices with 12V input
• Telecommunication and network standby equipment

Key specifications

• Nominal voltage: 12 V
• Nominal capacity: 18 Ah (at specified discharge rate)
• Battery type: Sealed lead‑acid, rechargeable, maintenance‑free
• Construction: Valve regulated, spill‑proof
• Recommended operating temperature range: typical for lead‑acid batteries (consult supplier for exact limits)
• Terminal type: standard lead‑acid terminals suitable for common connectors
• Case: compact rectangular housing for rack or compartment mounting

How to use

Install the battery in the device compartment ensuring correct polarity and secure terminal connections. Use compatible chargers or charging circuits designed for sealed lead‑acid batteries; avoid overcharging and ensure charge voltage and current follow the device or supplier recommendations. Observe ventilation and temperature limits specified by the system manufacturer. For long‑term storage, keep the battery charged to the recommended state of charge and recharge periodically to prevent deep discharge.

Recommendations

For reliable service life, operate the battery within recommended temperature ranges, avoid deep discharges, and use an appropriate charger with float and temperature compensation where possible. Verify fit and terminal compatibility before replacement and follow local disposal regulations for end‑of‑life batteries.