Sealed AGM Rechargeable Battery voltage VEL12-45 12V 45Ah, long life (15 years)

The sealed AGM rechargeable battery voltage VEL12-45 delivers a nominal 12V and 45Ah capacity in a valve-regulated, maintenance-free construction. Designed for lead-acid AGM technology, this battery provides stable DC power with low self-discharge and predictable performance over long standby periods. The manufacturer specifies a long service life of up to 15 years when the battery is used and stored according to recommended conditions. Its sealed design eliminates electrolyte spills and reduces maintenance compared with flooded batteries.

Advantages

The AGM construction offers improved vibration resistance and lower internal resistance for reliable power delivery under varying load conditions. Valve-regulated, sealed housing ensures safe operation in multiple orientations and reduces the need for periodic topping-up. Low self-discharge helps preserve capacity during storage, while the nominal 45Ah capacity balances energy density and compact dimensions for a range of stationary and mobile applications. The long expected service life reduces the frequency of replacements in long-term installations.

Suitable for

• Uninterruptible power supplies (UPS) for servers and network equipment
• Alarm and security systems
• Emergency lighting and exit signs
• Wheelchairs, mobility scooters and other mobility aids
• Small renewable energy storage and off-grid systems

Key specifications

• Nominal voltage: 12 V
• Nominal capacity: 45 Ah
• Battery type: Sealed AGM (absorbed glass mat)
• Design: Valve-regulated, maintenance-free
• Service life: Up to 15 years (manufacturer specified, depending on use and storage)
• Orientation: Can be used in multiple orientations due to sealed construction
• Self-discharge: Low self-discharge characteristic typical of AGM batteries

How to use

Install the battery in a well-ventilated, dry location away from direct heat sources and corrosive environments. Connect using appropriately sized cables and terminals, observing correct polarity and secure connections to avoid voltage drop. For standby use in UPS or alarm systems, keep the battery charged according to the host equipment manufacturer’s charging profile. For cycling applications, use a charger compatible with sealed AGM lead-acid batteries and follow recommended charge voltages and temperature compensation if provided.

Usage recommendations

To maximize service life, store the battery in a cool, dry place and maintain a partial or full charge during storage. Periodically check voltage and recharge if the battery falls below recommended storage voltage. Avoid deep discharges when possible and use a charger designed for AGM batteries to prevent overcharging and sulfation.