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SigmasTek  |  SKU: BW-4766

Best Technologies Unity UT3K UPS High Performance Replacement Battery Set 98.89 lb

12% off
New arrival
Sale price $459.99 USD Regular price $523.99
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Includes 4 SigmasTek SP12-35 NB batteries (12V 35AH)
Valve regulated spill proof for leak prevention
High vibration resistance for stable operation
Designed for UPS and emergency power use
Comes brand new with a 1 year warranty
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🔹 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.

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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 | 35 AH

Terminal Type

Nut & Bolt

Replacement Battery Set for Best Technologies Unity UT3K (SigmasTek SP12-35 NB)

Restore full runtime and reliability to your Best Technologies Unity UT3K with this brand new replacement UPS battery set. Engineered for compatibility, consistent performance and dependable safety, this kit is designed to deliver the high output needed for short-duration, high-rate discharge events. Whether you’re servicing a data center UPS or replacing worn cells in a facility backup, this high-performance UPS battery set provides the dependable power and build quality you expect.

Key Specifications

  • Compatible UPS Model: Best Technologies Unity UT3K
  • Included Batteries: 4 x SigmasTek SP12-35 NB
  • Voltage: 12 Volts
  • Capacity: 35 AH (amp-hours)
  • Terminal Type: Nut & Bolt (NB)
  • 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
  • Brand: SigmasTek
  • Installation Note: Use all existing cables and hardware from your original configuration to connect the new batteries

Benefits

This replacement UPS battery set delivers durable, long-lasting battery performance for demanding UPS environments. The high rate discharge design makes it an ideal high-performance UPS battery for systems that require bursts of higher power output for short intervals. Valve regulated, spill-proof construction and high vibration resistance enhance reliability in rackmount and floor-mounted UPS installations, while low self-discharge preserves capacity during storage and maintenance intervals. U.L. recognition and CE certification ensure safety and compliance for commercial and industrial applications.

Typical applications include Uninterruptible Power Supply (UPS) units like the Best Technologies Unity UT3K, emergency power supplies, and battery-powered tools and systems that require robust backup capability. Technicians will appreciate the familiar nut & bolt terminals (NB) which match existing hardware, and facilities managers will value the factory-fresh condition and one-year warranty that accompany each set. Our technical team tests every battery set to ensure it meets or exceeds OEM specifications, giving you confidence in both performance and longevity.

If you need a reliable replacement UPS battery for the Unity UT3K, this SigmasTek SP12-35 NB kit delivers a balance of high output, safety certifications, and a long-lasting battery design suited to professional and mission-critical environments. Buy your replacement batteries for the Best Technologies Unity UT3K UPS unit with confidence today — restore protected runtime and secure your equipment against unexpected outages.

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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