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SigmasTek  |  SKU: BW-4855

Best Technologies LI 1.8KVA UPS High Performance Replacement Battery Set 49.45 lb

18% off
New arrival
Sale price $245.99 USD Regular price $300.99
Shipping calculated at checkout.
Includes 2 fresh SigmasTek SP12-35 NB batteries (12V, 35AH) for LI 1.8KVA
High rate discharge design for enhanced UPS power output
Valve regulated and spill-proof for safe, hassle-free operation
Low self-discharge and vibration resistance improve reliability
Certified quality with U.L., CE, and 1 year warranty coverage
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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

SigmasTek SP12-35 NB Replacement Battery Set for Best Technologies LI 1.8KVA UPS

Revitalize your Best Technologies LI 1.8KVA Uninterruptible Power Supply with this compatible replacement UPS battery set. These SigmasTek SP12-35 NB batteries provide reliable, factory-fresh capacity and are engineered to meet the demands of backup power systems. If you want a high-performance UPS battery that delivers predictable runtimes and a long service life, this replacement set is tailored for those needs.

Key Specifications

  • Includes: 2 x SigmasTek SP12-35 NB batteries (battery set of 2)
  • Voltage: 12 Volts
  • Capacity: 35 AH (Amp-hours)
  • Terminal Type: Nut & Bolt
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Features: Low Self-discharge
  • Durability: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Brand: SigmasTek

Benefits

This replacement battery set combines durability, safety, and dependable power delivery. The high rate discharge design allows the Best Technologies LI 1.8KVA to handle brief periods of elevated power demand, making these batteries suitable for surge protection and short-run emergency loads. Valve regulated, spill-proof construction minimizes maintenance and reduces the risk of leakage, while low self-discharge helps maintain readiness over long storage intervals.

High vibration resistance contributes to a longer operational life in environments with mechanical stress. Certified by U.L. and CE, these batteries meet recognized safety and quality benchmarks and are supplied brand new with a 1-year warranty for peace of mind. Common applications include Uninterruptible Power Supply (UPS) units, Emergency Power Supply backups, and Battery Powered Tools that require reliable bursts of power. As a long-lasting battery option, this set provides consistent performance where continuity counts.

Be sure to reuse all existing cables and hardware from your original setup when installing these replacement batteries into your Best Technologies LI 1.8KVA UPS. For assistance with fitment or installation, our support team is available to help ensure a correct and safe replacement process.

Purchase your SigmasTek SP12-35 NB replacement UPS battery set for the Best Technologies LI 1.8KVA today to secure dependable backup power, competitive pricing, and fast shipping for in-stock items.

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

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