Best Power LI 1800 UPS High Performance Replacement Battery Set 32.67 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.
Best Power LI 1800 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
6 Volts | 12 Ah
Terminal Type
F2
SigmasTek SP6-12HR Replacement Battery Set — Compatible with Best Power LI 1800 UPS
Ensure uninterrupted protection for your Best Power LI 1800 with this engineered replacement UPS battery set. The kit contains factory-fresh SigmasTek SP6-12HR batteries matched to the LI 1800’s requirements, providing reliable 6V / 12AH capacity, low self-discharge and rugged vibration resistance for demanding UPS and emergency power applications. Trust this pack to deliver consistent runtime and high-performance operation.
Key Specifications
- Compatible UPS model: Best Power LI 1800
- Included quantity: 8 batteries
- Battery model: SigmasTek SP6-12HR
- Voltage: 6 Volts
- Capacity: 12 AH (Amp-hours)
- Terminal type: F2
- Design: High Rate Discharge Design
- Construction: Valve Regulated, Spill Proof
- Features: Low Self-discharge, High Vibration Resistance
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
- Important note: Requires reuse of existing cables and hardware from original configuration
Benefits
Designed as a high-performance UPS battery option for the Best Power LI 1800, these SigmasTek units supply dependable power during outages and high-demand events. The high rate discharge design provides the burst current needed for transient loads, while low self-discharge preserves capacity between uses. Together, these features contribute to a long-lasting battery solution that reduces maintenance and replacement frequency.
The valve-regulated, spill-proof construction improves safety and simplifies indoor installation, and the U.L. and CE certifications validate compliance with stringent quality standards. High vibration resistance makes this set suitable for rack-mount UPS systems and installations where mechanical stability is a concern. Common uses include uninterruptible power supplies, emergency backup systems, and battery-powered tools requiring trusted performance.
All packs are quality-tested to ensure they meet or exceed OEM expectations. If you have questions about fitment or need guidance on reusing original cables and hardware, our team is available at or by email to help you complete a smooth installation.
Get your Best Power LI 1800 back to peak performance — purchase this high-performance, long-lasting battery set today and secure reliable backup power for your critical equipment.
Technical Specifications
Product Highlights
- Brand Replacement : Best Power
- 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.
