Lead-acid AGM battery Voltcraft VC-16623025 12 V 55 Ah, maintenance-free, 239×205×132 mm

Voltcraft VC-16623025 is a 12 V 55 Ah lead-acid valve-regulated AGM (Absorbent Glass Mat) battery designed for stationary and mobile backup power. The battery is maintenance-free and sealed to prevent electrolyte leakage. Its compact dimensions of 239 × 205 × 132 mm make it suitable where reliable, space-efficient power is required for UPS systems, security devices, telecom equipment and other standby or cyclic applications.

Advantages

The AGM construction provides low internal resistance and good charge acceptance, while the valve-regulated design ensures safe operation without the need for regular topping-up of electrolyte. As a maintenance-free sealed battery, it reduces the risk of spills and simplifies installation and handling. The rated capacity of 55 Ah at 12 V gives a balance between energy storage and compact size, making the battery adaptable to both cyclic use and long-term standby duty.

Suitable for

• Uninterruptible power supplies (UPS) for home and small office equipment
• Security systems and alarm backup
• Telecommunication devices and network equipment backup
• Portable or stationary backup power in mobile installations
• Applications requiring a sealed, maintenance-free 12 V battery

Key specifications

• Nominal voltage: 12 V
• Nominal capacity: 55 Ah
• Battery type: Lead-acid, AGM (Absorbent Glass Mat), valve-regulated
• Maintenance: Maintenance-free, sealed construction
• Dimensions (W × D × H): 239 × 205 × 132 mm
• Intended use: Standby and cyclic applications

How to use

Install the battery in a well-ventilated, dry location away from ignition sources. Follow the equipment manufacturer’s instructions for battery mounting and electrical connections, ensuring correct polarity and secure terminal connections. Use a charger or charge controller compatible with 12 V lead-acid AGM batteries and observe recommended charging voltages for standby or cyclic service. Avoid deep discharges where possible to extend service life and perform periodic voltage checks to monitor state of charge.

Usage recommendations

For longest life, store and operate the battery at moderate temperatures and keep it on a suitable float or cyclic charging regime depending on use. Replace the battery when capacity noticeably declines or when the device indicates end-of-life; dispose of the battery according to local regulations for lead-acid batteries.