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SigmasTek  |  SKU: BW-2591

CyberPower RB1290 SLA Compatible High Performance Replacement Battery 5.99 lb

24% off
New arrival
Sale price $38.99 USD Regular price $50.99
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Replacement battery for CyberPower RB1290 UPS units
High rate discharge design for reliable backup power
Valve regulated and spill-proof for maintenance-free use
Low self-discharge keeps battery ready longer
Factory fresh with UL recognition and 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 | 9 AH

Terminal Type

F2

SigmasTek SP12-9HR Replacement Battery for CyberPower RB1290 UPS

This SigmasTek SP12-9HR replacement UPS battery is engineered for direct compatibility with the CyberPower RB1290 UPS, delivering reliable performance, consistent power delivery, and peace of mind when backup power matters most. Designed for high rate discharge applications, this battery provides the burst power needed by UPS systems during short, high-load events while maintaining dependable long-term reliability. If you need a high-performance UPS battery replacement for your CyberPower RB1290, this factory-fresh SigmasTek unit offers a cost-effective, tested solution that restores runtime and ensures your critical equipment stays protected.

Key Specifications

  • Brand: SigmasTek
  • Model: SP12-9HR
  • Voltage: 12 Volts
  • Capacity: 9 AH (Amp-hours)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction (sealed lead-acid)
  • Self-discharge: Low Self-discharge
  • Vibration Resistance: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Battery Type/Terminal: F2SLA (sealed lead-acid style)

Benefits

  • Durable construction and sealed, valve-regulated design reduce maintenance and eliminate spill risk, making this a long-lasting battery choice for demanding environments.
  • High rate discharge capability delivers higher power output for short durations — ideal for UPS systems that must support heavy loads during transfer events.
  • Low self-discharge helps preserve stored energy during shelf life and when devices are idle, extending usable life between charges.
  • High vibration resistance improves reliability in setups where movement or mechanical vibration could otherwise shorten battery life.
  • U.L. recognition and CE certification mean this replacement UPS battery meets common safety and performance standards for dependable operation in commercial and home environments.
  • Typical applications include Uninterruptible Power Supply (UPS) units like the CyberPower RB1290, emergency power supplies, and select battery-powered tools that accept the SP12-9HR form factor.
  • Our technically trained staff individually tests each battery to ensure it meets or exceeds OEM performance, giving you the confidence of a high-performance UPS battery replacement.

Ready to restore your CyberPower RB1290? Order this SigmasTek SP12-9HR replacement UPS battery today for a reliable, long-lasting battery solution that brings back secure backup power. Purchase now to get fast shipping and a 1 year warranty — protect your equipment with a trusted, high-performance option.

Technical Specifications

Voltage12 Volts
Amp Hours9 AH
Terminal TypeF2
Length (in.)5.95
Width (in.)2.56
Height (in.)3.7
Weight (lb.)5.99

Product Highlights

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

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