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SigmasTek  |  SKU: BW-4817

Best Power LI 3.0KVA UPS High Performance Replacement Battery Set 74.17 lb

22% off
New arrival
Sale price $347.99 USD Regular price $444.99
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Replacement battery set with 3 SigmasTek SP12-35 NB batteries (12V, 35 AH) for Best Power LI 3.0KVA UPS
High rate discharge design for quick high power output
Valve regulated, spill-proof for leak-proof, maintenance-free operation
Low self-discharge supports longer battery life
U.L. recognized, CE certified, and includes 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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Volts & Amps

12 Volts | 35 AH

Terminal Type

Nut & Bolt

Replacement Battery Set for Best Power LI 3.0KVA UPS

Specifically matched to the Best Power LI 3.0KVA Uninterruptible Power Supply, this replacement battery set delivers dependable compatibility, robust performance, and proven reliability. The package contains three SigmasTek SP12-35 NB batteries (12 Volts, 35 AH) optimized for high rate discharge use. If you need a replacement UPS battery that provides consistent backup power for servers, networking equipment, or emergency systems, this set offers a cost-effective and long-lasting solution.

Key Specifications

  • Compatible UPS Model: Best Power LI 3.0KVA
  • 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: Built with valve-regulated, spill-proof housing and engineered to resist vibration for reliable operation in rack or floor-mounted UPS enclosures.
  • Long life: Low self-discharge properties and factory-fresh condition help maximize usable life and reduce the frequency of replacements, delivering a dependable, long-lasting battery.
  • High performance: Tailored for high rate discharge scenarios, this kit supplies the instantaneous current needed during short-term high loads, ensuring the Best Power LI 3.0KVA maintains critical uptime.
  • Typical applications: Ideal as a replacement UPS battery for the Best Power LI 3.0KVA, as well as emergency power supply systems and certain battery-powered tools where 12V 35AH modules are required.
  • Safety & compliance: U.L. recognition and CE certification indicate adherence to industry safety standards for backup power equipment.
  • Warranty & testing: Every battery is tested to meet or exceed OEM specifications and includes a 1 year warranty for confidence in performance.

Installation requires reusing the existing cables and hardware from your original configuration. Orders for in-stock replacement UPS battery kits typically ship within 24 hours. If you have any questions about compatibility or installation, our customer service team is ready to help at .

Protect your equipment with this high-performance UPS battery replacement for the Best Power LI 3.0KVA today — order now to ensure continuous, reliable backup power 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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