Sealed Lead-Acid Battery Yuasa NPW45-12 12V 7.3Ah with Faston 250 terminals

Yuasa NPW45-12 is a sealed lead-acid battery with a nominal voltage of 12V and a rated capacity of 7.3Ah. Designed for both standby and cyclic use, this maintenance-free battery delivers reliable, compact power for systems that require dependable backup or portable energy. The NPW45-12 features Faston 250 quick-connect terminals that allow fast, secure connections in confined spaces and reduce installation time.

Advantages

The sealed construction prevents electrolyte leakage and eliminates the need for regular water topping, supporting safe indoor use in cabinets and enclosures. Valve-regulated design ensures recombination of gases during normal operation, reducing maintenance demands. Faston 250 terminals provide a standard, widely compatible connection method for quick replacement or integration. The battery’s compact form factor and stable output make it suitable for long-term standby applications where consistent voltage and predictable discharge behavior are required.

Suitable for (tasks / use cases)

• Uninterruptible power supplies (UPS) for small servers and network devices
• Emergency lighting systems and exit signs
• Security and intruder alarm panels
• Telecommunications equipment and VoIP devices
• Portable test equipment and small-scale renewable systems

Key specifications

• Nominal voltage: 12 V
• Rated capacity: 7.3 Ah (at specified discharge rate)
• Battery type: Sealed lead-acid (valve-regulated, maintenance-free)
• Terminals: Faston 250 quick-connect
• Recommended operating temperature range: typical for lead-acid chemistry (store and operate within manufacturer guidelines)
• Mounting orientation: can be installed in upright position per manufacturer guidance

How to use

Install the battery in a well-ventilated enclosure or equipment compartment following the device manufacturer’s instructions. Ensure correct polarity when connecting to the system and use properly sized wiring and connectors for the expected current. For repeated cyclic use, apply an appropriate charging algorithm for sealed lead-acid batteries: use regulated constant voltage charging with current limit, and avoid deep discharges to extend service life. For standby applications, connect the battery to the device’s standby charger and verify charger settings are compatible with sealed lead-acid chemistry.

Usage recommendations

Store and operate the battery within recommended temperature limits and avoid prolonged exposure to high temperatures. Periodically check terminal connections for corrosion and tightness. Replace the battery at the end of its useful life or if capacity falls below the levels required for reliable backup operation. Dispose of used batteries according to local regulations for lead-acid battery recycling.