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SigmasTek  |  SKU: BW-4816

Best Power LI 5.0KVA UPS High Performance Replacement Battery Set 74.17 lb

21% off
New arrival
Sale price $347.99 USD Regular price $440.99
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Set of 3 brand new SigmasTek SP12-35 NB batteries (12V, 35 AH) for Best Power LI 5.0KVA UPS
High rate discharge design ensures rapid power delivery
Valve regulated, spill-proof construction for safe, reliable use
Low self-discharge extends battery shelf life
U.L. recognized, CE certified, with 1-year warranty included
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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 5.0KVA UPS

Designed as a direct replacement for the Best Power LI 5.0KVA Uninterruptible Power Supply, this brand new battery set delivers reliable compatibility, high-performance output and consistent reliability for mission-critical equipment. The kit includes three SigmasTek SP12-35 NB batteries (12 Volts, 35 AH) engineered for high rate discharge applications where short bursts of greater power are required. Whether you need a replacement UPS battery for data center backup, telecom racks, or emergency systems, this set offers tested performance and long-lasting battery life you can trust.

Key Specifications

  • Compatible UPS Model: Best Power LI 5.0KVA
  • 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: Valve regulated, spill-proof construction and high vibration resistance make these batteries suitable for demanding environments and frequent cycling.
  • Long life: Low self-discharge chemistry and factory-fresh condition ensure these batteries provide reliable, long-lasting battery performance when installed and maintained properly.
  • High performance: The high rate discharge design delivers the surge current required by UPS systems during short duration high-load events — ideal for protecting servers, network gear and sensitive electronics.
  • Versatile applications: Perfect as a replacement UPS battery in Best Power LI 5.0KVA units, and also well suited for emergency power supply systems and certain battery-powered tools requiring 12V/35AH modules.
  • Certified safety: U.L. recognition and CE compliance provide assurance of manufacturing and safety standards for critical backup power systems.
  • Tested & guaranteed: Each battery is tested to meet or exceed OEM specifications and ships with a 1 year warranty for added peace of mind.

This replacement battery set requires reuse of your original cables and hardware to complete installation. Orders for in-stock items typically ship within 24 hours. If you need assistance selecting the right replacement UPS battery for your Best Power LI 5.0KVA unit, our customer service team is available at . Choose this high-performance UPS battery set for dependable backup power and a long-lasting battery solution.

Buy your replacement batteries for the Best Power LI 5.0KVA UPS unit today and secure superior performance, reliable runtime, and excellent value. Order now to restore full backup capability.

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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