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SigmasTek  |  SKU: BW-5574

Enersys HX540-12FR High Performance UPS Replacement Battery 106.1 lb

24% off
New arrival
Sale price $698.99 USD Regular price $915.99
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Genuine EnerSys HX Series 12HX505 battery with high-rate discharge
Long standby life and deep cycle capability
Absorbent Glass Mat and flame retardant case for safety
Leak-proof design with 3-year warranty included
UL listed and factory fresh for guaranteed quality
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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.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.


Volts & Amps

12 Volts | 159 Ah

Terminal Type

Internal Thread

Replacement Enersys HX540-12FR Battery — Compatible with Enersys HX540-12FR UPS

This compatible replacement UPS battery for the Enersys HX540-12FR brings high-rate discharge capability and proven sealed lead acid reliability to your critical power system. Engineered to meet demanding UPS requirements, the unit offers robust standby life and stable operation for sensitive electronics and power infrastructure. If you need a dependable, high-performance UPS battery for the HX540-12FR application, this replacement is built to deliver.

Key Specifications

  • High-rate discharge design
  • 539 Watts per cell on 15-min rate at 1.67 Volts
  • Self-discharge rate < 3% per month
  • Expected life up to 10 years in standby use
  • Up to 300 cycles at 100% discharge in cycle service
  • No-leak construction — can be operated in any position
  • Absorbent Glass Mat Technology (AGM)
  • ABS (UL94 V-0) flame retardant case
  • Spill proof construction
  • Brand New, Factory Fresh
  • Superior Performance Guaranteed
  • UL Listed
  • 3 Year Warranty
  • Professionally tested and packaged
  • Manufacturer/Distributor: SigmasTek
  • Voltage: 12 Volts
  • Capacity: 159 Ah
  • Terminal: Internal Thread
  • Compatible Brand/Model: Enersys HX540-12FR

Benefits

  • Robust durability — AGM construction with an ABS UL94 V-0 flame retardant case offers mechanical and thermal protection for stable long-term service.
  • Extended lifespan — Low self-discharge and up to 10 years standby life make this a long-lasting battery choice for maintaining readiness in UPS environments.
  • High-performance capability — The high-rate discharge design and strong watt-per-cell rating ensure reliable power delivery for brief high-load events and UPS transfer periods.
  • Wide applicability — Ideal for UPS applications including Enersys HX540-12FR systems, emergency backup power, and battery-powered equipment needing dependable discharge characteristics.
  • Quality assurance — Professional testing, packaging, UL listing, and a 3 year warranty provide confidence for mission-critical installations.

Restore full backup capacity to your Enersys HX540-12FR UPS with this replacement UPS battery. Order now to get a high-performance, long-lasting battery with reliable shipping and support.

Technical Specifications

Voltage12 Volts
Amp Hours159 Ah
Terminal TypeInternal Thread
Length (in.)13.19
Width (in.)6.77
Height (in.)10.83
Weight (lb.)106.0

Product Highlights

  • Brand Replacement : Enersys HX540-12FR
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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