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SigmasTek  |  SKU: BW-4818

Best Power LI 2.5KVA UPS High Performance Replacement Battery Set 74.17 lb

15% off
New arrival
Sale price $347.99 USD Regular price $409.99
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Includes 3 new 12V 35 AH SigmasTek SP12-35 NB batteries for Best Power LI 2.5KVA UPS
High rate discharge design provides powerful bursts when required
Valve regulated, spill-proof for safe and clean use
Low self-discharge ensures extended battery readiness
Certified by U.L. and CE with 1-year warranty
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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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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.


Volts & Amps

12 Volts | 35 AH

Terminal Type

Nut & Bolt

Replacement Battery Set for Best Power LI 2.5KVA UPS

Engineered for compatibility with the Best Power LI 2.5KVA Uninterruptible Power Supply, this replacement battery set brings dependable performance, excellent reliability, and straightforward installation. The set includes three SigmasTek SP12-35 NB batteries (12 Volts, 35 AH) specifically designed for high rate discharge applications. If you’re searching for a replacement UPS battery that restores runtime and protects critical systems, this kit provides a durable and long-lasting battery option.

Key Specifications

  • Compatible UPS Model: Best Power LI 2.5KVA
  • Battery Model: SigmasTek SP12-35 NB
  • Quantity Included: 3 batteries
  • Voltage: 12 Volts
  • Capacity: 35 AH (Amp-hours)
  • Terminal Type: Nut & Bolt
  • 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

Benefits

  • Durability: Rugged valve-regulated construction and vibration resistance provide dependable operation in both static and mobile installations.
  • Long life: Low self-discharge characteristics help preserve capacity while in storage and extend usable life in service, delivering a long-lasting battery solution.
  • High performance: Designed for high rate discharge use, these batteries support the surge demands of UPS systems during brief high-load events to maintain equipment uptime.
  • Typical uses: Perfect as a replacement UPS battery for Best Power LI 2.5KVA units, as well as for emergency power systems and compatible battery-powered tools requiring 12V/35AH modules.
  • Safety & compliance: U.L. recognized and CE certified for manufacturing and safety standards relevant to backup power components.
  • Assurance: Each battery is tested by technical staff and ships with a 1 year warranty to assure quality and performance.

Note: Installation requires reuse of your unit’s existing cables and hardware. In-stock orders generally ship within 24 hours. If you need help identifying the correct replacement UPS battery for the Best Power LI 2.5KVA, call our support team at for assistance.

Restore reliable backup power with this high-performance UPS battery replacement for the Best Power LI 2.5KVA — purchase now to secure dependable protection and a long-lasting battery solution.

Technical Specifications

Voltage12 Volts
Amp Hours35 AH
Terminal TypeNut & Bolt
Length (in.)7.72
Width (in.)5.14
Height (in.)6.22
Weight (lb.)74.1

Product Highlights

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

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