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SigmasTek  |  SKU: BW-2515

Best Power LI 750 (Fortress) UPS High Performance Replacement Battery Set 11.99 lb

9% off
New arrival
Sale price $66.99 USD Regular price $73.99
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Includes 2 SigmasTek SP12-9HR batteries (12V 9AH) for Best Power LI 750 (Fortress) UPS
High rate discharge design for quick power bursts
Valve regulated, spill-proof construction prevents leaks
Low self-discharge prolongs battery life
Factory fresh with 1-year warranty
In stock

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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.

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Volts & Amps

12 Volts | 9 AH

Terminal Type

F2

Replacement Battery Set for Best Power LI 750 (Fortress) - SigmasTek SP12-9HR (12V 9AH)

Maintain reliable backup power for your Best Power LI 750 (Fortress) UPS with this replacement UPS battery set. The pack contains two SigmasTek SP12-9HR batteries, manufactured to deliver consistent, high-rate discharge performance and dependable long-term service. If you need a proven replacement UPS battery that balances endurance and output, this high-performance UPS battery kit is an excellent fit for your Fortress unit.

Key Specifications

  • Model: SigmasTek SP12-9HR
  • Voltage: 12 Volts
  • Capacity: 9 AH (amp-hours)
  • Quantity: 2 batteries per set
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Self-Discharge: Low Self-discharge
  • Durability: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatibility Note: Requires use of all existing cables and hardware from original configuration
  • Labeling: SigmasTek12 Volts9 AHF2SLA Batteries (as supplied)

Benefits

  • Rugged & Reliable: The valve regulated, spill-proof construction and high vibration resistance ensure these batteries tolerate real-world conditions and frequent cycling without compromise.
  • Extended Service Life: Low self-discharge preserves stored energy, making this a dependable, long-lasting battery option that reduces the frequency of replacements.
  • High Output Capability: With a high rate discharge design, this set functions as a high-performance UPS battery capable of supplying necessary surge power during brief outages.
  • Safe & Certified: U.L. recognition and CE certification confirm manufacturing standards and safety compliance for use in regulated environments.
  • Multiple Uses: While primarily a replacement UPS battery for Best Power LI 750 (Fortress) units, these batteries are also suitable for emergency power supply systems and battery-powered tools.
  • Quality Tested: Technical staff reviews and tests every battery to ensure it meets or exceeds OEM specifications for reliable performance.
  • Installation Reminder: Use the existing cables and hardware from your Best Power LI 750 (Fortress) when installing these replacement batteries to ensure correct and safe connection.

Order your replacement UPS battery set for the Best Power LI 750 (Fortress) today to restore dependable backup and protect critical equipment. With a one-year warranty and typical same-day shipping for in-stock items, this long-lasting battery solution offers both performance and peace of mind—purchase now to secure uninterrupted power.

Technical Specifications

Voltage12 Volts
Amp Hours9 AH
Terminal TypeF2
Length (in.)5.95
Width (in.)2.56
Height (in.)3.7
Weight (lb.)11.98

Product Highlights

  • Brand Replacement : Best Power
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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