APC CURK18 UPS Compatible Replacement Battery Set 5.52 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 CURK18 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
6 Volts | 7 AH
Terminal Type
F1
SigmasTek SP6-7 Replacement Battery Set for APC CURK18 (2-Pack)
Ensure uninterrupted protection for your APC CURK18 with this precision-matched replacement UPS battery set. This pack contains two SigmasTek SP6-7 batteries (6 Volts, 7 AH each) engineered for dependable compatibility, strong discharge capability, and consistent performance under load. Designed for users who demand reliable emergency power and minimal downtime, this replacement UPS battery set provides the durability and support your APC unit requires.
Key Specifications
- Brand: SigmasTek
- Model: SP6-7
- Voltage: 6 Volts
- Capacity: 7 AH (Amp-hours) per battery
- Quantity Included: 2 batteries (replacement battery set)
- Design: High Rate Discharge Design
- Construction: Valve Regulated, Spill Proof
- Features: Low Self-discharge
- Features: High Vibration Resistance
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
- Compatibility Note: Use all existing cables and hardware from original configuration to connect new UPS batteries
- Compatible UPS Model: APC CURK18
Benefits
This high-performance UPS battery set offers exceptional reliability and a long-lasting battery life that keeps your APC CURK18 ready for unexpected outages. The high rate discharge architecture ensures rapid delivery of power when your UPS demands it most, making this an excellent choice for surge events or transient heavy loads. With valve-regulated, spill-proof construction, these batteries minimize maintenance and are safer to handle within enclosed UPS cabinets.
Low self-discharge preserves capacity during storage and reduces the need for frequent maintenance charging, while robust vibration resistance improves performance in mobile or vibration-prone installations. As a replacement UPS battery, this SigmasTek pack is factory fresh and UL/CE certified, providing proven quality and compliance. Common uses include Uninterruptible Power Supply (UPS) units, emergency power supply systems, and battery-powered tools, making it a versatile, high-performance UPS battery option.
Each battery is tested by our knowledgeable technicians to ensure it meets or exceeds OEM standards for the APC CURK18. Whether you manage a small server room or a critical workstation, these batteries restore reliable backup capacity quickly and affordably.
Don’t wait until power loss interrupts operations—purchase this replacement UPS battery set for the APC CURK18 now for fast shipping, a one-year warranty, and the assurance of a high-performance, long-lasting battery solution.
Technical Specifications
Product Highlights
- Brand Replacement : APC CURK18
- 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.




