APC SRT1500RMXLA UPS Compatible Replacement Battery Set 28.03 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 SRT1500RMXLA UPS Compatible 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 | 5.5 Ah
Terminal Type
F2
SRT1500RMXLA Battery Replacement for APC UPS Systems
Ensure reliable power protection with this high-performance APC SRT1500RMXLA replacement battery set, designed specifically for APC UPS units. This complete set includes eight SigmasTek SP12-5.5HR batteries, engineered to provide stable output, consistent runtime, and dependable backup for critical systems.
Whether you're safeguarding servers, network devices, or sensitive electronics, this replacement battery offers a cost-effective alternative to OEM units while maintaining or exceeding original performance standards. With spill-proof construction and low maintenance requirements, it helps protect equipment and maintain uptime during unexpected power interruptions.
Key Features & Benefits
- High-rate discharge design, optimized for UPS applications
- Valve-regulated, spill-proof construction for safety and maintenance-free use
- Low self-discharge for long shelf life and readiness
- High vibration resistance for rack-mounted UPS systems
- Factory-tested for consistent quality and performance
- Includes 1-year manufacturer warranty
Technical Specifications
- Brand: SigmasTek
- Model: SP12-5.5HR
- Quantity: 8 batteries (full replacement set)
- Voltage: 12V
- Capacity: 5.5Ah
- Chemistry: Sealed Lead Acid (VRLA)
- Terminal Type: F2
- Certifications: UL Recognized, CE Certified
- Condition: Brand New
Compatible Models
- APC SRT1500RMXLA UPS
- APC SRT1500RMXLA-NC UPS
This set works as a direct replacement for SRT1500RMXLA-NC units and is suitable for systems requiring equivalent electrical specifications.
Why Choose This Replacement Battery?
This SRT1500RMXLA UPS battery set delivers reliable performance without the premium OEM price. Ideal for short, high-power discharge cycles, each battery ensures stable runtime during outages. Spill-proof design increases safety, and low maintenance reduces long-term operating costs for IT and business environments.
Installation & Maintenance
- Designed for easy installation using original APC cables and hardware
- No special tools required
- Proper charging after installation ensures maximum battery life and optimal UPS performance
Applications / Use Cases
- Uninterruptible Power Supply (UPS) systems
- Data centers and server rooms
- Network and telecom equipment
- Emergency power backup systems
Technical Specifications
Product Highlights
- Brand Replacement : APC SRT1500RMXLA
- 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.




