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SigmasTek  |  SKU: BW-2531

APC Back-UPS RS BR1100CI-RS UPS High Performance Replacement Battery Set 11.99 lb

8% off
New arrival
Sale price $66.99 USD Regular price $72.99
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Replacement set includes 2 new SigmasTek SP12-9HR batteries (12V 9AH)
High rate discharge for emergency and UPS power backup
Valve regulated, spill-proof for safe handling
Low self-discharge and certified for quality
1-year warranty included
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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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Volts & Amps

12 Volts | 9 AH

Terminal Type

F2

Replacement Battery Set for APC Back-UPS RS BR1100CI-RS — SigmasTek SP12-9HR (2-Pack)

Replace worn cells with a compatible, high-performance solution designed specifically for the APC Back-UPS RS BR1100CI-RS. This replacement UPS battery set includes two SigmasTek SP12-9HR batteries (12 Volts, 9 AH) engineered to restore reliable runtime, consistent performance, and safety. Ideal for users who demand a dependable, long-lasting battery for their BR1100CI-RS UPS, these factory-fresh batteries are tested to meet or exceed OEM expectations. Please note: you must reuse your existing cables and hardware from the original configuration to connect the new UPS batteries.

Key Specifications

  • Included: 2 x SigmasTek SP12-9HR batteries
  • Voltage: 12 Volts
  • Capacity: 9 AH (amp-hours)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Features: Low Self-discharge
  • Durability: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

Investing in this replacement UPS battery set restores reliable backup power and improves surge response for your APC Back-UPS RS BR1100CI-RS. The high rate discharge design delivers elevated power output when short bursts of higher current are required, making it an excellent choice for protecting sensitive electronics during outages. Low self-discharge preserves capacity during storage and standby, while valve regulated, spill-proof construction improves safety and handling. High vibration resistance ensures stable operation in racks, office environments, and other setups where movement or vibration may occur. As a high-performance UPS battery, these SigmasTek units offer superior performance and predictable runtime, helping extend the effective life of your UPS system.

Typical applications include Uninterruptible Power Supply (UPS) units, emergency power systems, and battery-powered tools that require dependable short-duration high output. These replacement UPS battery packs are rigorously tested by our technical staff to ensure they meet demanding operational criteria and provide a long-lasting battery solution for your critical loads.

Orders for in-stock items are typically shipped within 24 hours, and our customer service team is available at or by e-mail to assist with fitment and purchase questions. If you are looking for a reliable, high-performance UPS battery for your BR1100CI-RS, this SigmasTek 2-pack is a cost-effective way to restore dependable backup power.

Buy this replacement UPS battery set for the APC Back-UPS RS BR1100CI-RS today and enjoy restored runtime, reliable protection, and a long-lasting battery backed by a 1 Year Warranty — order now to secure superior performance at a great price.

Technical Specifications

Voltage12 Volts
Amp Hours9 AH
Terminal TypeF2
Length (in.)5.95
Width (in.)2.56
Height (in.)3.7
Weight (lb.)11.98

Product Highlights

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

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