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SigmasTek  |  SKU: BW-2436

Best Technologies LI 1425 UPS High Performance Replacement Battery Set 23.98 lb

9% off
New arrival
Sale price $130.99 USD Regular price $143.99
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Includes 4 brand new SigmasTek SP12-9HR batteries (12V 9AH)
High rate discharge design for short bursts of high power output
Valve regulated, spill-proof construction for safety and reliability
Low self-discharge extends shelf life and readiness
1 year warranty with tested OEM-equivalent performance
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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.

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.

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Volts & Amps

12 Volts | 9 AH

Terminal Type

F2

Replacement Battery Set for Best Technologies LI 1425 UPS - 4 x SigmasTek SP12-9HR (12V 9AH)

Upgrade your Best Technologies LI 1425 with a reliable, high-performance replacement UPS battery set designed for dependable backup power. This kit includes four brand new SigmasTek SP12-9HR batteries (12 Volts, 9 AH) engineered for high rate discharge and superior performance. Ideal for protecting critical equipment, these batteries deliver consistent, long-lasting battery life and the assurance of tested reliability. Please note you must reuse all existing cables and hardware from your original configuration to connect the new UPS batteries to your Best Technologies LI 1425 unit.

Key Specifications

  • Included Batteries: 4 x SigmasTek SP12-9HR
  • Voltage: 12 Volts
  • Capacity: 9 AH (Amp-hours)
  • 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
  • Installation Note: Use all existing cables and hardware from original configuration
  • Manufacturer/Brand: SigmasTek

Benefits

  • Reliable Performance: These SigmasTek batteries are built for UPS environments where a high-performance UPS battery is required to supply quick bursts of power during outages. They are tested to meet or exceed OEM specifications for the Best Technologies LI 1425.
  • Durability and Safety: Valve regulated, spill-proof construction and U.L. recognition plus CE certification ensure safe operation in a range of temperatures and conditions. High vibration resistance helps maintain performance in cabinet and rack environments.
  • Long Life and Low Maintenance: Low self-discharge characteristics translate to a long-lasting battery that retains capacity during storage and standby, reducing maintenance and replacement frequency.
  • Versatile Applications: Perfect as a replacement UPS battery set for Uninterruptible Power Supply (UPS) units, emergency power supply systems, and battery-powered tools that require brief, high-power output.
  • Tested Quality: Our technically savvy staff personally tests every battery set to ensure consistent performance and reliability before shipment.

Ready to replace the batteries in your Best Technologies LI 1425? Order this high-performance UPS battery kit today for dependable backup power, fast shipping (most in-stock orders ship within 24 hours), and a 1 year warranty. If you need assistance, call our customer service at or e-mail us — our experienced staff will help you choose the right replacement UPS battery for your needs. Buy now and restore reliable power protection to your LI 1425.

Technical Specifications

Voltage12 Volts
Amp Hours9 AH
Terminal TypeF2
Length (in.)5.95
Width (in.)2.56
Height (in.)3.7
Weight (lb.)23.96

Product Highlights

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

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