APC Back-UPS RS BR1100CI-AS UPS High Performance Replacement Battery Set 11.99 lb
— Ready to ship immediately
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.
APC Back-UPS RS BR1100CI-AS UPS High Performance Replacement Battery Set is backordered and will ship as soon as it is back in stock.
Let customers speak for us
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
✉ sales@batteryweb.com
Battery Care Tips
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
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
⚠️ 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 Battery Set for APC Back-UPS RS BR1100CI-AS — SigmasTek SP12-9HR (2-Pack)
Get reliable, tested replacement power for your APC Back-UPS RS BR1100CI-AS with this two-battery SigmasTek SP12-9HR kit (12 Volts, 9 AH). These brand new, factory-fresh batteries are formulated to deliver consistent performance and dependable runtime for your BR1100CI-AS UPS. They are an ideal choice when you need a high-performance UPS battery that restores the unit’s original protection levels. Be sure to reuse all existing cables and hardware from your original battery configuration when installing the new pack.
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
These SigmasTek batteries are engineered for environments that demand a high rate discharge capability — delivering the short-term power surges your APC Back-UPS RS BR1100CI-AS may require during transitions and failures. As a replacement UPS battery solution, they balance safety and performance with valve regulated, spill-proof construction and low self-discharge characteristics that preserve readiness over long standby periods. High vibration resistance helps ensure stable operation in service racks, office environments, or portable installations.
The long-lasting battery attributes of this pack make it suitable for a range of applications: Uninterruptible Power Supply (UPS) systems that protect computers and networking equipment, emergency power supply configurations for critical lighting or comms, and battery-powered tools that need dependable bursts of energy. Our technical team individually tests each battery set to ensure it meets stringent quality checks and provides reliable runtime for your protected devices.
In-stock orders typically ship within 24 hours. If you need assistance, contact our customer service at for guidance on purchasing and installation. Remember to reuse your original cables and hardware to connect the new batteries.
Restore full backup functionality to your APC Back-UPS RS BR1100CI-AS with this high-performance UPS battery replacement — order the SigmasTek SP12-9HR 2-pack today and benefit from reliable protection and a 1 Year Warranty.
Technical Specifications
Product Highlights
- Brand Replacement : APC Back-UPS
- Manufacturer: SigmasTek
- Product Type: UPS Batteries
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.




