APC SMART-UPS RT SURTA3000RMXL3U UPS High Performance Replacement Battery Set 56.05 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 SMART-UPS RT SURTA3000RMXL3U 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 | 5.5 Ah
Terminal Type
F2
Replacement Battery Set for APC SMART-UPS RT SURTA3000RMXL3U
Upgrade your APC SMART-UPS RT SURTA3000RMXL3U with this brand new replacement UPS battery set engineered for dependable compatibility, consistent performance, and long-term reliability. This complete set is designed specifically to restore full runtime and power integrity to your SURTA3000RMXL3U UPS, delivering the stable output and quick response required for critical loads. If you're seeking a high-performance UPS battery that fits your APC SMART-UPS RT SURTA3000RMXL3U, this long-lasting battery solution is tested to meet rigorous quality standards and to deliver the emergency power you rely on.
Key Specifications
- Quantity: 16 batteries per set
- Battery Model: SigmasTek SP12-5.5HR
- Voltage: 12 Volts
- Capacity: 5.5 AH (Amp-hours)
- Design: High Rate Discharge Design
- Construction: Valve Regulated Spill Proof Construction
- Feature: Low Self-discharge
- Feature: High Vibration Resistance
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
- Brand: SigmasTek
- Note: Use existing cables and hardware from original configuration to connect new UPS batteries
Benefits
Designed as a replacement UPS battery set for APC SMART-UPS RT SURTA3000RMXL3U, this kit delivers reliable, repeatable power when you need it most. The high rate discharge design makes it an ideal high-performance UPS battery for applications requiring short bursts of elevated power output, such as server failovers, network equipment protection, and other critical infrastructure. Valve regulated, spill-proof construction ensures safe installation and maintenance, while low self-discharge preserves charge during storage so the batteries are ready when called upon.
These batteries offer high vibration resistance and U.L. recognition plus CE certification, supporting rugged installations and compliance-minded deployments. As a long-lasting battery option, the SigmasTek SP12-5.5HR cells are factory fresh and undergo testing to meet or exceed OEM performance benchmarks. Typical applications include Uninterruptible Power Supply (UPS) units, emergency power supply systems, and battery powered tools where dependable temporary power is required.
Whether you’re replacing an aging battery pack or stocking spares for preventive maintenance, this replacement UPS battery set provides superior performance and durability. Our technical staff personally tests each assembly to ensure consistent output and long service life. For compatibility, remember to reuse your original cables and hardware to complete installation.
Ready to restore full runtime to your APC SMART-UPS RT SURTA3000RMXL3U? Order this high-performance UPS battery pack today and enjoy a long-lasting battery solution backed by a 1 year warranty. Purchase now to secure fast shipping and dependable emergency power for your critical systems.
Technical Specifications
Product Highlights
- Brand Replacement : APC SMART-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.



