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SigmasTek  |  SKU: BW-13307

National Battery NBX12-540 High Performance Compatible UPS Replacement Battery 95.39 lb

19% off
Sale price $569.99 USD Regular price $706.99
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Compatible replacement for National Battery NBX12-540 UPS systems
12 Volts power capacity for reliable backup
High 159 Ah rating ensures extended runtime
Internal thread design for secure and easy installation
Manufactured by SigmasTek for quality and durability
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

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Volts & Amps

12 Volts | 159 Ah

Terminal Type

Internal Thread

National Battery NBX12-540 - Compatible with SigmasTek

The National Battery NBX12-540 replacement battery is a purpose-built 12 Volt, 159 Ah unit designed for compatibility with SigmasTek UPS systems. Offering dependable capacity and robust construction, this battery delivers the reliability required for critical standby power applications. Whether you are maintaining data center uptime or ensuring emergency systems remain online, the NBX12-540 is a high-performance battery option engineered for sustained operation and dependable service life.

Key Specifications

  • Product Model: NBX12-540
  • Replacement Type: UPS Battery (Replacement)
  • Compatible Brand: SigmasTek
  • Brand (Replacement): National Battery
  • Voltage: 12 Volts
  • Capacity: 159 Ah
  • Terminal Type: Internal Thread

Benefits

The NBX12-540 is engineered for long-term durability and dependable performance. As a long-lasting battery, it supports consistent capacity retention and stable terminal connections through repeated cycles. The robust design of this high-performance battery helps minimize service interruptions and reduces the frequency of replacements, delivering superior value over the battery’s lifecycle.

Durability: Constructed for rigorous UPS environments, the internal thread terminals and strong case design resist vibration and connection wear. Longevity: The 159 Ah capacity at 12 Volts enables extended run-time, ensuring critical loads remain powered during outages. Performance: This unit offers predictable voltage under load and efficient recharge acceptance, making it suitable for float-charging in standby applications or periodic cycling in more demanding scenarios.

Typical applications for the NBX12-540 include uninterruptible power supplies, emergency backup systems, telecom infrastructure, data centers, and industrial control panels. It is also well-suited for power banks, renewable energy storage arrays, and other installations where a replacement battery with reliable capacity and terminal integrity is essential.

Restore confidence in your backup system with the National Battery NBX12-540 replacement battery. If you need a high-performance, long-lasting battery compatible with SigmasTek UPS systems, add the NBX12-540 to your cart today and protect your critical loads.

Technical Specifications

Voltage12 Volts
Amp Hours159 Ah
Terminal TypeInternal Thread
Length (in.)13.19
Width (in.)6.77
Height (in.)10.83
Weight (lb.)95.3

Product Highlights

  • Brand Replacement : National Battery NBX12-540
  • Manufacturer: SigmasTek
  • Product Type: High-Rate Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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