AGM battery Volt Polska OPTI 120Ah (model 44258) — 12V lead‑acid standby battery

Sealed AGM battery Volt Polska OPTI 120Ah is a 12V lead‑acid rechargeable battery intended for standby and backup power applications. It features absorbed glass mat (AGM) technology and a valve‑regulated design that provides maintenance‑free operation, low self‑discharge and reliable performance in float or cyclic service. With a nominal capacity of 120Ah, this battery is designed to deliver stable DC power for extended periods in systems that require dependable reserve energy.

Advantages

The battery's AGM construction ensures spill‑proof operation and improved vibration resistance compared with flooded lead‑acid cells. Valve regulation reduces electrolyte loss and eliminates the need for periodic water replenishment. Low self‑discharge characteristics and tight internal sealing allow long storage and extended service life in standby roles. The battery offers consistent voltage under typical UPS and backup scenarios and is compatible with standard charging profiles for lead‑acid, sealed batteries.

Suitable for

• Uninterruptible Power Supplies (UPS) for IT and server equipment
• Emergency and exit lighting systems
• Security and alarm systems
• Telecommunication racks and network equipment backup
• Small off‑grid or auxiliary DC power installations

Key specifications

• Nominal voltage: 12 V
• Nominal capacity: 120 Ah (rated at standard discharge conditions)
• Battery type: Sealed lead‑acid, AGM (absorbed glass mat)
• Service types: Float (standby) and cyclic operation capable
• Design: Valve‑regulated, maintenance‑free
• Construction: Spill‑proof, vibration‑resistant housing

How to use

Install the battery in a dry, well‑ventilated location and secure it to prevent movement or vibration. Connect using appropriate cable sizes and terminal hardware, observing polarity and manufacturer torque recommendations for terminals. Use a charger or charging system configured for sealed lead‑acid/AGM batteries and set float and boost voltages according to standard lead‑acid specifications. Allow the battery to reach full charge before putting it into service for best performance and longevity. Avoid deep discharges whenever possible to extend cycle life.

Usage recommendations

For reliable backup performance, perform periodic visual inspections, keep terminals clean and tight, and monitor system charge voltage. Store batteries in a charged state in a cool environment to minimize self‑discharge. When replacing multiple batteries in a string or rack, use units of similar age and condition to ensure balanced operation.