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SigmasTek  |  SKU: BW-4800

Alpha Technologies CFR 5000 UPS Compatible Replacement Battery Set 98.89 lb

13% off
New arrival
Sale price $459.99 USD Regular price $528.99
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Four brand new 12V 35AH SigmasTek batteries included
High vibration resistance for extended durability
Valve regulated spill-proof prevents leaks
Low self-discharge for long shelf life
Certified with 1-year warranty
In stock

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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 Battery Set for Alpha Technologies CFR 5000 UPS - 4 x SigmasTek SP12-35 NB (12V 35AH)

Ensure uninterrupted protection for your Alpha Technologies CFR 5000 UPS with this premium replacement battery pack. This kit contains four SigmasTek SP12-35 NB batteries engineered for dependable compatibility and consistent output. Ideal for replacing worn cells or maintaining service readiness, these brand-new batteries provide reliable power and the durable construction needed for mission-critical backup systems.

Key Specifications

  • Battery model: SigmasTek SP12-35 NB
  • Voltage: 12 Volts
  • Capacity: 35 AH (Amp-hours)
  • Quantity: Set of 4 batteries
  • 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: Alpha Technologies CFR 5000

Benefits

Built for robust, long-term service, this replacement UPS battery set provides the short-term high output necessary during power events while maintaining lifecycle performance. The high-rate discharge design meets the demand for bursts of power, and valve-regulated, spill-proof construction ensures safe, maintenance-free operation. Thanks to low self-discharge, these batteries remain ready for use after storage, and high vibration resistance increases reliability in active installations.

This high-performance UPS battery pack is suitable for uninterruptible power supply units, emergency backup systems, and battery-powered tools. Each SigmasTek SP12-35 NB is factory fresh and individually tested to ensure consistent voltage delivery and dependable service life. A one-year warranty supports your purchase, and our knowledgeable staff is available to help with selection and installation guidance. Remember to reuse existing cables and hardware from your original configuration when installing these replacement batteries in the CFR 5000.

We strive for quick turnaround—most in-stock orders ship within 24 hours. For assistance, call customer service at .

Don’t leave your backup power to chance—order this long-lasting, high-performance replacement UPS battery set for the Alpha Technologies CFR 5000 today and restore dependable runtime.

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

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