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-2431

CyberPower RB1290X4D High Performance Compatible Replacement SLA Battery 23.98 lb

11% off
New arrival
Sale price $130.99 USD Regular price $147.99
Shipping calculated at checkout.
Includes 4 brand new SigmasTek SP12-9HR batteries (12V 9AH)
High rate discharge design supports high power output UPS systems
Valve regulated, spill-proof construction prevents leaks and maintenance
Low self-discharge keeps batteries ready for immediate use
Factory fresh with 1 year warranty for confidence in quality
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 | 9 AH

Terminal Type

F2

Replacement SigmasTek SP12-9HR Battery Set for CyberPower RB1290X4D UPS

This replacement UPS battery set is specifically engineered for the CyberPower RB1290X4D and delivers reliable compatibility, strong performance, and proven reliability for critical power applications. The pack includes four SigmasTek SP12-9HR batteries (12 Volts, 9 AH) to restore runtime and maintain backup power for servers, workstations, and network equipment. Designed for high rate discharge situations, this long-lasting battery option provides dependable emergency power when you need it most.

Key Specifications

  • Quantity: 4 batteries per set
  • Battery Model: SigmasTek SP12-9HR
  • Voltage: 12 Volts
  • Capacity: 9 AH (Amp-hours)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Feature: Low Self-discharge
  • Feature: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Product Marking: SigmasTek12 Volts9 AHF2SLA Batteries
  • Installation Note: Use all existing cables and hardware from your original configuration to connect the new UPS batteries

Benefits

  • Durability — Built with valve regulated, spill proof construction and high vibration resistance, this replacement UPS battery set stands up to demanding environments and transportation without sacrificing performance.
  • Long life and low maintenance — Low self-discharge characteristics help preserve charge during storage and extend time between replacements, making this a practical long-lasting battery solution for less frequent servicing.
  • High performance — The high rate discharge design ensures the pack can deliver increased power output for short periods, making it a high-performance UPS battery ideal for handling sudden loads and supporting critical equipment.
  • Certified safety — U.L. recognized and CE certified, these batteries meet established safety and quality standards for peace of mind in commercial and home environments.
  • Typical applications — Perfect for Uninterruptible Power Supply (UPS) units like the CyberPower RB1290X4D, emergency power supply systems, and battery-powered tools where reliable, immediate power is essential.
  • OEM-level assurance — Each set is brand new and factory fresh; our technical team tests every battery to ensure it meets or exceeds OEM specifications for a seamless upgrade or replacement.

Ready to restore reliable backup power? Purchase this replacement UPS battery set for the CyberPower RB1290X4D today and secure a high-performance UPS battery that delivers long-lasting battery life and dependable emergency power. Order now to get superior performance and fast shipping.

Technical Specifications

Voltage12 Volts
Amp Hours9 AH
Terminal TypeF2
Length (in.)5.95
Width (in.)2.56
Height (in.)3.7
Weight (lb.)23.96

Product Highlights

  • Brand Replacement : SLA Batteries
  • 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.