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SigmasTek  |  SKU: BW-2049

Belkin BU304000 UPS Compatible Replacement Battery Set 3.18 lb

18% off
New arrival
Sale price $27.99 USD Regular price $33.99
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Includes 2 SigmasTek SP6-4.5 batteries (6 Volts 4.5 AH) for Belkin BU304000
High rate discharge for short bursts of high power output
Valve regulated and spill-proof for safe, maintenance-free use
Low self-discharge rate and strong vibration resistance
Factory fresh with U.L. recognition, CE certification, and warranty
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🔹 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.

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Volts & Amps

6 Volts | 4.5 AH

Terminal Type

F1

Replacement Battery Set for Belkin BU304000 — SigmasTek SP6-4.5 (Compatible with Belkin BU304000)

Replace worn batteries in your Belkin BU304000 with a dependable, high-performance replacement UPS battery set that restores backup power and system reliability. This pair of SigmasTek SP6-4.5 batteries is specially designed to deliver the performance needed for UPS operation, offering a long-lasting battery solution for your Belkin unit. Count on consistent output, safe construction, and factory-fresh condition to protect your critical equipment.

Key Specifications

  • Included: 2 x SigmasTek SP6-4.5 batteries
  • Voltage: 6 Volts
  • Capacity: 4.5 AH (amp-hours)
  • Battery Model: SP6-4.5
  • Terminal Type: F1
  • Number of Batteries: 2 (battery set)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Self-discharge: Low Self-discharge
  • Durability: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatibility note: Use all existing cables and hardware from your original configuration to connect the new UPS batteries
  • Typical processing: In-stock items typically ship within 24 hours

Benefits

These SP6-4.5 batteries are engineered for high-rate discharge performance, making them an excellent high-performance UPS battery option for the Belkin BU304000. The valve regulated, spill proof design means safer operation and no need for routine electrolyte maintenance, while low self-discharge preserves stored charge to extend shelf life and readiness.

Built to resist vibration and manufactured factory-fresh, these batteries provide dependable service life and predictable runtime under the load demands of UPS systems. The U.L. recognition and CE certification confirm that these batteries meet industry standards for safety and quality. Whether protecting home office equipment, networking gear, or emergency systems, this replacement UPS battery set provides reliable results.

Recommended applications include Uninterruptible Power Supply units, Emergency Power Supply backups, and Battery Powered Tools. Our technical team tests each replacement set to ensure it meets or exceeds OEM expectations for the Belkin BU304000 so you can rely on a long-lasting battery that restores the functionality of your UPS.

Ready to upgrade your Belkin BU304000? Purchase this SigmasTek SP6-4.5 replacement battery set now for fast shipping and trusted, long-lasting battery performance.

Technical Specifications

Voltage6 Volts
Amp Hours4.5 AH
Terminal TypeF1
Length (in.)2.76
Width (in.)1.86
Height (in.)3.94
Weight (lb.)3.18

Product Highlights

  • Brand Replacement : Belkin BU304000
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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