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SigmasTek  |  SKU: BW-4859

Best Power LI 2.0KVA UPS High Performance Replacement Battery Set 49.45 lb

9% off
New arrival
Sale price $245.99 USD Regular price $270.99
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Set of 2 replacement batteries (12V, 35AH) for Best Power LI 2.0KVA UPS
High rate discharge design supports short-term high power output
Valve regulated, spill-proof construction for safe use and no leaks
Low self-discharge and vibration resistant for extended reliability
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 SigmasTek SP12-35 NB Batteries for Best Power LI 2.0KVA UPS

Bring your Best Power LI 2.0KVA Uninterruptible Power Supply back to full capability with this compatible replacement UPS battery set. The two SigmasTek SP12-35 NB batteries included are factory fresh and optimized for high-rate discharge performance, delivering the dependable backup power required by demanding UPS environments. This replacement UPS battery pack is a smart choice for protecting servers, communications gear, and critical systems that depend on continuous power.

Key Specifications

  • Quantity: 2 batteries per set
  • Battery Model: SigmasTek SP12-35 NB
  • Voltage: 12 Volts
  • Capacity: 35 AH (Amp-hours)
  • Terminal Type: Nut & Bolt
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction (sealed)
  • Features: Low Self-discharge, High Vibration Resistance, Superior Performance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year
  • Compatible With: Best Power LI 2.0KVA UPS

Benefits

As a high-performance UPS battery option, this SigmasTek set supports short bursts of elevated power demand, allowing your Best Power LI 2.0KVA UPS to perform reliably during outages and transitional power events. The sealed, valve-regulated construction makes these batteries spill-proof and maintenance-free, while low self-discharge ensures they remain ready when needed. High vibration resistance enhances durability, especially in rack or mobile installations.

These long-lasting battery replacements are suitable for Uninterruptible Power Supply (UPS) units, emergency power supply systems, and battery-powered tools. Typical uses include backup for servers and network devices, emergency lighting, telecom equipment, and portable power applications. Because the set uses nut & bolt terminals, you can reuse the existing cables and hardware from your original configuration for secure and proper installation.

We personally test each replacement battery set to guarantee superior performance that meets or exceeds OEM specifications. With U.L. and CE recognition and a one-year warranty, you get both safety and assurance with every purchase.

Upgrade your Best Power LI 2.0KVA UPS with these SigmasTek SP12-35 NB replacement UPS batteries today. Order now for fast processing and contact our customer service at if you need assistance choosing or installing your new batteries.

Technical Specifications

Voltage12 Volts
Amp Hours35 AH
Terminal TypeNut & Bolt
Length (in.)7.72
Width (in.)5.14
Height (in.)6.22
Weight (lb.)49.4

Product Highlights

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

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