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SigmasTek  |  SKU: BW-5371

Best Technologies FERRUPS FES 3.1KVA UPS High Performance Replacement Battery 12.66 lb

43% off
New arrival
Sale price $34.75 USD Regular price $61.07
Shipping calculated at checkout.
AGM technology ensures durability and consistent performance
High rate discharge design supports UPS and power tools
Maintenance-free with spill proof design for easy use
U.L. Recognized and CE Certified for safety compliance
Brand new with 1 year warranty included
In stock

— Ready to ship immediately


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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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⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

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


Volts & Amps

12 Volts | 18 Ah

Terminal Type

Nut & Bolt

Replacement Best Technologies FERRUPS FES 3.1KVA Battery — Compatible with Best Technologies FERRUPS FES 3.1KVA

This replacement UPS battery is engineered for reliable compatibility and peak performance with the Best Technologies FERRUPS FES 3.1KVA. Designed as a direct-fit, high-quality alternative that meets or exceeds OEM SLA battery specifications, this unit delivers the dependable backup power your UPS needs. Whether you are protecting servers, network equipment, or critical workstations, this high-performance UPS battery offers maintenance-free operation and proven safety certifications for worry-free use.

Key Specifications

  • Compatible Model: Best Technologies FERRUPS FES 3.1KVA
  • Battery Type: Sealed Lead Acid (SLA)
  • Electrolyte Technology: Absorbent Glass Mat (AGM)
  • Discharge Design: High Rate Discharge Design
  • Maintenance: Maintenance-Free with Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Terminal Type: Nut & Bolt
  • Manufacturer / Label: SigmasTek
  • Brand (replacement for): Best Technologies
  • Typical Applications: Emergency Power Supply, Battery Powered Tools

Benefits

  • Durability: Built with AGM technology and spill-proof construction for robust mechanical integrity and safe, maintenance-free operation. This long-lasting battery resists leakage and tolerates typical UPS maintenance cycles without degradation.
  • Long life & reliability: The high rate discharge design is optimized for quick, clean energy delivery under load, offering a long-lasting battery solution that preserves runtime when it matters most. Certified U.L. and CE components add another layer of reliability for critical systems.
  • High performance: As a high-performance UPS battery replacement, it supports swift power transfer and steady output in demanding environments, helping maintain clean power to connected devices during outages or fluctuations.
  • Maintenance-free convenience: The sealed AGM construction eliminates the need for regular water checks, reduces maintenance overhead, and simplifies installation and replacement.
  • Versatile applications: Ideal for UPS units like the Best Technologies FERRUPS FES 3.1KVA, emergency power systems, and battery-powered tools—this replacement UPS battery is engineered for common UPS and emergency scenarios.
  • Cost-effective replacement: Factory-fresh components and a 1 year warranty provide an excellent balance of value and assurance when replacing aging or failed batteries in your UPS system.

Ready to restore dependable backup power? Order this replacement UPS battery for the Best Technologies FERRUPS FES 3.1KVA today and upgrade to a high-performance, long-lasting battery solution that keeps your critical equipment protected. Add to cart now for fast shipping and peace of mind.

Technical Specifications

Voltage12 Volts
Amp Hours18 Ah
Terminal TypeNut & Bolt
Length (in.)7.13
Width (in.)3.0
Height (in.)6.59
Weight (lb.)12.65

Product Highlights

  • Brand Replacement : Best Technologies
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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