Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com

WELCOME5
SigmasTek  |  SKU: BW-1566

Alpha Technologies CFR 4000E High Performance Replacement Battery Set 98.89 lb

19% off
New arrival
Sale price $459.99 USD Regular price $569.99
Shipping calculated at checkout.
Complete set of 4 replacement batteries included
Advanced AGM technology for enhanced battery life
Guaranteed to fit Alpha Technologies CFR 4000E UPS models
UL certification ensures safety and quality
1-year warranty protection
In stock

— Ready to ship immediately

Free shipping

Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe

Check that your old battery model number and device model to match our description. This makes sure they work together.


We ship your order same day if you buy it before 4 PM EST.

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

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.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.


Volts & Amps

12 Volts | 35 AH

Terminal Type

Nut & Bolt

Alpha Technologies CFR 4000E Replacement - 4 x 12V 35AH NB Batteries

Designed specifically for the Alpha Technologies CFR 4000E, this set of four replacement UPS batteries delivers reliable compatibility, consistent performance, and the durability you expect from a premium replacement UPS battery. Each pack is built with Absorbent Glass Mat (AGM) sealed battery technology, UL certified, and engineered to meet or exceed the original manufacturer specifications so your CFR 4000E continues to protect critical equipment and maintain uptime.

Key Specifications

  • Package contains: 4 batteries
  • Chemistry: SLA (Sealed Lead Acid)
  • AGM Technology: Absorption Glass Mat sealed design
  • Compatibility: Guaranteed compatibility with original battery set for Alpha Technologies CFR 4000E
  • Warranty: 1-year Warranty
  • Volts: 12 V
  • Amp Hours: 35 AH
  • Weight: 98.8 Lbs (package)
  • Length: 7.72 In
  • Width: 5.14 In
  • Height: 6.14 In
  • Terminal: NB (Nut & Bolt)
  • Certification: UL (Underwriters Laboratories) certified
  • Brand / Source: SigmasTek / Alpha Technologies
  • Shipping Methods: UPS Ground and USPS
  • Processing: We ship in 1 business day for all in-stock items

Benefits

  • Durability: AGM sealed construction reduces maintenance and resists vibration, making this a durable replacement UPS battery ideal for heavy-use environments.
  • Long life: Engineered to meet or exceed OEM specifications, these cells provide a long-lasting battery option that preserves runtime and reliability for your CFR 4000E.
  • High performance: As a high-performance UPS battery pack, the four-battery set supports clean, steady power delivery during outages and brownouts.
  • Plug-and-play replacement: Designed for installation in the original configuration; reuse existing cables and hardware to simplify replacement.
  • Safety and certification: UL certification and SLA chemistry ensure safe operation in UPS, emergency power systems, and backup arrays.
  • Typical applications: Ideal for UPS systems, emergency power backup, telecom closets, server rooms, network cabinets, and other critical power applications where a reliable long-lasting battery is required.
  • Fast shipping and support: Ships quickly and backed by ReplaceUPSBattery.com customer service for help with installation or compatibility questions.

Keep your Alpha Technologies CFR 4000E running at peak performance with this complete set of four 12V 35AH NB replacement UPS batteries. Order now to secure a high-performance UPS battery pack that provides dependable backup power and peace of mind.

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

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.