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SigmasTek  |  SKU: BW-4788

Best Power FERRUPS FER 1.8KVA UPS Compatible 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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Includes 4 brand new 12V 35AH SigmasTek SP12-35 NB batteries
High rate discharge design ideal for emergency power
Low self-discharge ensures battery longevity
Valve regulated, spill-proof for leak prevention
U.L. and CE certified with 1-year warranty
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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

Replacement SigmasTek SP12-35 NB Batteries for Best Power FERRUPS FER 1.8KVA UPS

When uptime matters, choose a replacement UPS battery set engineered for performance and reliability. This SigmasTek SP12-35 NB 4-pack is a direct-fit solution for the Best Power FERRUPS FER 1.8KVA, offering high-rate discharge capability, durable construction, and reliable runtime. These brand-new batteries are tested to meet stringent standards and provide a long-lasting battery option for protecting critical systems and equipment.

Key Specifications

  • Included quantity: 4 batteries (battery set)
  • Battery model: SigmasTek SP12-35 NB
  • Voltage: 12 Volts
  • Capacity: 35 AH (amp-hours)
  • Terminal type: Nut & Bolt
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Self-discharge: Low Self-discharge
  • Durability: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Installation note: Must use all existing cables and hardware from the original configuration to connect the new UPS batteries

Benefits

These replacement batteries deliver the rugged reliability and consistent performance required by UPS systems like the Best Power FERRUPS FER 1.8KVA. The high rate discharge design supports brief periods of elevated power demand, making these batteries ideal for protecting servers, networking equipment, and control systems during outages. The valve-regulated, spill-proof construction reduces maintenance concerns while improving installation safety, and the low self-discharge helps maintain charge over extended storage periods so the batteries remain ready for use.

A high-performance UPS battery must be durable — the SigmasTek units offer high vibration resistance to withstand rack-mounted or on-site deployments without compromising longevity. Their U.L. recognition and CE certification affirm adherence to recognized safety and quality benchmarks, and the included 1 year warranty provides added assurance. Typical applications include Uninterruptible Power Supply (UPS) systems, emergency backup power setups, and battery-powered tools where dependable short-term high output is necessary.

All batteries are brand new and factory tested to ensure they meet or exceed OEM expectations. For safe and correct installation, retain and reuse your original cables and hardware when replacing the batteries in your FER 1.8KVA UPS. This set is an excellent choice if you want a replacement UPS battery that combines dependable performance, affordability, and long service life.

Ensure your Best Power FERRUPS FER 1.8KVA remains fully protected — add this long-lasting, high-performance battery set to your cart and secure fast, reliable backup power 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 Power
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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