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SigmasTek  |  SKU: BW-2478

CyberPower RB1290X3PS Compatible Replacement SLA Battery 17.99 lb

15% off
New arrival
Sale price $97.99 USD Regular price $114.99
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Includes 3 SigmasTek SP12-9HR batteries (12V 9AH) for CyberPower RB1290X3PS UPS
High rate discharge design ideal for emergency power backup
Valve regulated spill-proof batteries ensure leak-free performance
Low self-discharge for longer shelf life and reliability
U.L. recognized, 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

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Volts & Amps

12 Volts | 9 AH

Terminal Type

F2

Replacement Battery Set for CyberPower RB1290X3PS UPS

Engineered for the CyberPower RB1290X3PS UPS, this replacement battery set combines compatibility, safety, and reliable performance to keep your systems protected. The three included SigmasTek SP12-9HR batteries are tailored for high-rate discharge applications, providing the fast-response power your UPS needs when the grid fails. Choose this long-lasting battery kit to restore runtime and ensure consistent emergency backup for critical equipment.

Key Specifications

  • Brand: SigmasTek
  • Battery Model: SP12-9HR
  • Quantity: 3 batteries per set
  • Voltage: 12 Volts
  • Capacity: 9 AH (Amp-hours)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof
  • 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: Requires using existing cables and hardware from original configuration to connect
  • Reference Terminal: F2 (as listed in product reference)

Benefits

This high-performance UPS battery set offers robust durability and dependable power delivery for the CyberPower RB1290X3PS. The valve-regulated, spill-proof construction ensures safe, maintenance-free use in rack and cabinet installations, while low self-discharge keeps the batteries ready after storage or infrequent use. High vibration resistance reduces wear in demanding environments, extending the service life of the battery bank.

The high-rate discharge design is ideal when short bursts of concentrated power are necessary to maintain critical loads during outages. Our technical team individually tests these replacement UPS batteries to confirm they meet or exceed OEM performance, giving you confidence in both capacity and safety. With UL and CE recognition and a one-year warranty, this kit balances performance and peace of mind.

Use this battery set in Uninterruptible Power Supply (UPS) units, emergency power supply systems, and battery-powered tools where reliable, fast-response power is necessary. Whether you’re performing routine maintenance or replacing aged cells after runtime degradation, these batteries restore stability and protect sensitive electronics.

Secure your replacement UPS battery for the CyberPower RB1290X3PS now to restore backup power capability. Orders for in-stock items usually ship within 24 hours—purchase today to maintain uninterrupted protection.

Technical Specifications

Voltage12 Volts
Amp Hours9 AH
Terminal TypeF2
Length (in.)5.95
Width (in.)2.56
Height (in.)3.7
Weight (lb.)17.97

Product Highlights

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

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