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SigmasTek  |  SKU: BW-4772

Best Technologies FERRUPS FER 3.1KVA UPS High Performance Replacement Battery Set 98.89 lb

11% off
New arrival
Sale price $459.99 USD Regular price $518.99
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Includes 4 SigmasTek SP12-35 NB batteries for UPS units
High vibration resistance for stable power output
Valve regulated spill proof for no-mess usage
Factory fresh and tested to meet OEM specs
1 year warranty for reliable replacement
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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

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Volts & Amps

12 Volts | 35 AH

Terminal Type

Nut & Bolt

SigmasTek SP12-35 NB (12V 35AH) Replacement Battery Set for Best Technologies FERRUPS FER 3.1KVA

Restore robust backup capacity to your Best Technologies FERRUPS FER 3.1KVA with this carefully matched replacement UPS battery set. This 4-pack of SigmasTek SP12-35 NB batteries is engineered for compatibility, reliability, and the high-rate discharge demands of UPS systems. If you need a high-performance UPS battery that delivers dependable, long-lasting battery life under heavy load, this professional-grade replacement set is an excellent choice.

Key Specifications

  • Battery Model: SigmasTek SP12-35 NB
  • Quantity: 4 batteries included
  • Voltage: 12 Volts
  • Capacity: 35 AH (Amp-hours)
  • Terminal Type: Nut & Bolt
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof (VRLA)
  • Self-discharge: Low Self-discharge
  • Vibration Resistance: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatibility Note: Requires use of existing cables and hardware from original configuration to connect new batteries
  • OEM Fit: Replacement for Best Technologies FERRUPS FER 3.1KVA UPS units

Benefits

  • Durability: Valve-regulated, spill-proof construction combined with high vibration resistance ensures these batteries maintain performance in demanding environments and transportation conditions.
  • Long Life: Low self-discharge rates help maintain stored capacity and extend useful service life, providing a long-lasting battery solution for backup power systems.
  • High Performance: Specifically designed for high rate discharge, these batteries handle brief periods of heavy load without compromising voltage stability — an essential feature for any high-performance UPS battery.
  • Certifications & Safety: U.L. recognition and CE certification mean these replacement batteries meet strict quality and safety standards for peace of mind in mission-critical installations.
  • Application Flexibility: Well suited for uninterruptible power supply (UPS) units, emergency power systems, and battery-powered tools where dependable energy delivery and fast response are required.
  • Tested & Ready: Each pack is brand new and factory-tested to meet or exceed the OEM specifications for the Best Technologies FERRUPS FER 3.1KVA.

Don’t let depleted batteries compromise your Best Technologies FERRUPS FER 3.1KVA. Purchase this replacement UPS battery set now to regain reliable, long-lasting battery backup. Fast shipping is available for in-stock items — order your high-performance UPS battery pack today.

Technical Specifications

Voltage12 Volts
Amp Hours35 AH
Terminal TypeNut & Bolt
Length (in.)7.72
Width (in.)5.14
Height (in.)6.22
Weight (lb.)98.8

Product Highlights

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

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