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SigmasTek  |  SKU: BW-5241

Dynatech SRF 550-2 UPS High Performance Replacement Battery Set 25.32 lb

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New arrival
Sale price $113.99 USD Regular price $128.99
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Includes 2 brand new SigmasTek SP12-18HR batteries (12V 18AH)
High rate discharge design for superior short-term power output
Valve regulated, spill-proof construction ensures safety and reliability
Low self-discharge and high vibration resistance for longer battery life
Meets U.L. recognized and CE certified quality standards with 1-year 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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Category

UPS Batteries

Brand Replacement

SigmasTek

Volts & Amps

12 Volts | 18 Ah

Terminal Type

Nut & Bolt

Replacement Battery Set for Dynatech SRF 550-2 UPS (SigmasTek SP12-18HR)

Upgrade your Dynatech SRF 550-2 with a reliable, high-performance replacement UPS battery set designed for compatibility, consistent performance, and dependable operation. This pair of SigmasTek SP12-18HR batteries (12 Volts, 18 AH) delivers the short-term, high-rate discharge power that many UPS systems demand while providing the safety and long-life characteristics you expect from a long-lasting battery. Use your existing cables and hardware to install these batteries quickly and restore full UPS capability.

Key Specifications

  • Battery Model: SigmasTek SP12-18HR
  • Quantity: 2 batteries per set
  • Voltage: 12 Volts
  • Capacity: 18 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
  • Compatible With: Dynatech SRF 550-2 Uninterruptible Power Supply (UPS)

Benefits

These replacement batteries are engineered for durability and consistent output under demanding conditions. The high rate discharge design makes this set ideal as a high-performance UPS battery when your Dynatech SRF 550-2 needs extra power for short intervals, while valve regulated, spill-proof construction enhances safety and reduces maintenance. Low self-discharge extends shelf life and readiness, and high vibration resistance helps protect against mechanical stress, ensuring a long-lasting battery solution for mission-critical environments.

Typical applications include Uninterruptible Power Supply (UPS) units, emergency power supply systems, and battery-powered tools. Whether you need reliable backup during power outages, surge protection for sensitive equipment, or dependable energy for short, intense loads, this replacement UPS battery set is built to perform. Our technically savvy staff personally tests every battery to ensure they meet or exceed OEM specifications so you can rely on consistent, repeatable performance.

Please remember to reuse all original cables and hardware to connect these batteries properly. For assistance with selection or installation for your Dynatech SRF 550-2, contact our customer service at or email us. Orders for in-stock items typically ship within 24 hours.

Ready to restore full backup power? Buy this high-performance, long-lasting replacement UPS battery set for the Dynatech SRF 550-2 today and enjoy superior reliability and value.

Technical Specifications

Voltage12 Volts
Amp Hours18 Ah
Terminal TypeNut & Bolt
Length (in.)7.13
Width (in.)3.0
Height (in.)6.59
Weight (lb.)25.3

Product Highlights

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

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