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SigmasTek  |  SKU: BW-1548

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

24% off
New arrival
Sale price $459.99 USD Regular price $601.99
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Complete 4-pack of 12V 35AH AGM batteries for Best Power FERRUPS FER 1.8KVA UPS
UL listed to meet rigorous safety and quality standards
NB terminal configuration matches original equipment for easy swap
Durable, maintenance-free battery technology ensures long life
Quick shipping and 1-year warranty support your purchase
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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

Best Power FERRUPS FER 3.1KVA Replacement UPS Battery (Compatible with Best Power FERRUPS FER 3.1KVA)

Maintain optimal runtime and safeguard critical equipment with this compatible replacement UPS battery set for the Best Power FERRUPS FER 3.1KVA. These 12V 35AH batteries utilize AGM (Absorption Glass Mat) sealed technology to provide dependable, maintenance-free backup power. Supplied by ReplaceUPSBattery.com and UL certified, this full four-battery pack is built to meet or exceed the original manufacturer specifications so your UPS delivers reliable performance when it matters most.

Key Specifications

  • Package contains: 4 batteries (price includes all 4)
  • Chemistry: SLA (Sealed Lead Acid)
  • Battery Technology: AGM (Absorption Glass Mat)
  • Compatibility: Guaranteed compatibility with original battery set for Best Power FERRUPS FER 3.1KVA
  • Warranty: 1-year Warranty
  • Volts: 12 V
  • Amp Hours: 35 AH
  • Weight: 98.8 Lbs (as specified)
  • Length: 7.72 In
  • Width: 5.14 In
  • Height: 6.14 In
  • Terminal: NB (Nut & Bolt)
  • Brand: SigmasTek
  • Certifications: UL certified
  • Shipping Methods: UPS Ground and USPS; we ship in 1 business day for all in-stock items
  • Installation: Install in same original configuration and reuse existing cables and hardware

Benefits

  • Durability: AGM sealed cells provide robust protection against spills and vibration, making them suitable for a variety of environments.
  • Long life: Engineered to meet or exceed OEM specifications to deliver a long-lasting battery solution that preserves UPS runtime and functionality.
  • High performance: Stable output under load protects connected equipment from data loss and downtime during interruptions.
  • Certainty and safety: UL certification and SLA chemistry offer proven safety and compliance for home, office, and light industrial uses.
  • Hassle-free swap: Supplied as a complete four-battery set to match the original Best Power configuration—reuse your existing hardware for an easy replacement process.
  • Typical applications: Ideal for UPS systems, emergency power backup, and portable or stationary tools that rely on dependable reserve power.
  • Cost-effective reliability: Buying the full replacement pack ensures balanced performance and extends the useful life of your UPS system.

Ready to restore dependable backup power? Purchase this long-lasting battery replacement UPS pack for the Best Power FERRUPS FER 3.1KVA now for fast shipping and a 1-year warranty. Need help choosing or installing the batteries? Call (800) 657-1303 for expert assistance.

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 Power
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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