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SigmasTek  |  SKU: BW-4776

Best Technologies FERRUPS FD 4.3KVA UPS High Performance Replacement Battery Set 98.89 lb

25% off
New arrival
Sale price $459.99 USD Regular price $610.99
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High rate discharge design for superior short-term power
Valve regulated spill proof to prevent leaks
Low self-discharge to maintain charge longer
U.L. Recognized and CE Certified for safety
Factory fresh with 1 year warranty included
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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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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.


Volts & Amps

12 Volts | 35 AH

Terminal Type

Nut & Bolt

Replacement SigmasTek SP12-35 NB Battery Set for Best Technologies FERRUPS FD 4.3KVA

Upgrade your Best Technologies FERRUPS FD 4.3KVA with this compatible, high-performance replacement UPS battery set designed for reliability and peak performance. This factory-fresh 4-battery pack delivers consistent power, low self-discharge, and high vibration resistance so your UPS remains ready when it matters most. Whether you manage critical servers, network equipment, or emergency systems, these batteries are built to restore runtime and confidence in your UPS system.

Key Specifications

  • Battery model: SigmasTek SP12-35 NB
  • Quantity: 4 batteries per set
  • Voltage: 12 Volts
  • Capacity: 35 AH (Amp-hours)
  • Terminal type: Nut & Bolt
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Features: Low Self-discharge, High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatible UPS model: Best Technologies FERRUPS FD 4.3KVA

Benefits

This replacement UPS battery set is engineered for durability and dependable service life. The high rate discharge design delivers higher power output over short periods, making it ideal for demanding UPS loads and surge events. Valve-regulated, spill-proof construction reduces maintenance and improves safety in rack or cabinet installations. Low self-discharge preserves stored energy during idle periods, while high vibration resistance ensures stable performance in diverse environments. U.L. recognition and CE certification provide the confidence of tested, compliant components.

As a high-performance UPS battery solution, this set is perfect for Uninterruptible Power Supply units, emergency backup systems, and battery-powered tools that require short bursts of elevated output. Technicians and facility managers will appreciate the factory-fresh condition and the assurance that units are tested to meet or exceed OEM specifications. If you need a long-lasting battery option to restore runtime and protect equipment connected to your Best Technologies FERRUPS FD 4.3KVA, this set is an excellent choice.

Ready to replace your original cells? Use your existing cables and hardware to connect these batteries, then enjoy renewed runtime and reliability. Order this replacement UPS battery set for the Best Technologies FERRUPS FD 4.3KVA today and secure dependable power for your critical systems.

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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