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SigmasTek  |  SKU: BW-1559

Best Technologies Unity UT3K High Performance Replacement Battery Set 98.89 lb

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New arrival
Sale price $459.99 USD Regular price $509.99
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Four-pack 12V 35AH AGM batteries for Best Technologies FERRUPS FE 4.3KVA UPS
UL certification ensures dependable and safe operation
Nut & bolt terminals for easy and secure installation
Maintenance-free absorbed glass mat technology
Includes 1-year warranty and expedited shipping
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Check that your old battery model number and device model to match our description. This makes sure they work together.


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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 | 35 AH

Terminal Type

Nut & Bolt

Your Best Technologies Unity UT3K - Replacement Batteries

Restore full backup capability to your Best Technologies Unity UT3K with this complete 4-battery replacement set. Featuring AGM sealed technology and SLA chemistry, these batteries are crafted to meet or exceed original specifications so your UPS provides reliable emergency power, clean shutdowns, and consistent performance when you need it most. Choose a replacement UPS battery engineered for durability and safety.

Key Specifications

  • Package contains: 4 batteries
  • Chemistry: SLA (Sealed Lead Acid)
  • Technology: AGM (Absorption Glass Mat)
  • Compatibility: Guaranteed compatibility with original battery set for Best Technologies Unity UT3K
  • Volts: 12 V
  • Amp Hours: 35 AH
  • Terminal type: NB (Nut & Bolt)
  • Weight (set listed): 98.8 Lbs
  • Dimensions (each): Length 7.72 In, Width 5.14 In, Height 6.14 In
  • Certifications: UL (Underwriters Laboratories) certified
  • Warranty: 1-year Warranty
  • Shipping: UPS Ground and USPS; shipped in 1 business day for in-stock items
  • Spec sheets: SigmasTek UPS Batteries Spec Sheets

Benefits

  • Durability: Spill-proof AGM cells and sealed SLA design ensure dependable operation with minimal maintenance over the battery lifespan.
  • Long life: Built to OEM specifications so you get a long-lasting battery solution that helps maintain expected run times and system responsiveness.
  • High performance: Stable voltage under load and efficient recharge cycles make this a high-performance UPS battery replacement for sensitive electronics and power-critical systems.
  • Safety-first: UL certification and proven AGM construction give confidence for use in offices, data centers, and mission-critical installations.
  • Straightforward swap: Install in the original configuration and reuse existing cables and hardware for a fast replacement process.
  • Common uses: Designed for UPS backup, emergency power, networking equipment, telecommunication systems, and battery-backed tools and devices.

Don’t wait until a power interruption affects your operations. Purchase this complete set of replacement UPS batteries for your Best Technologies Unity UT3K today and enjoy fast shipping, reliable performance, and a 1-year warranty to protect your investment.

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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