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SigmasTek  |  SKU: BW-4506

OPTI-UPS PS500 / 500PS UPS High Performance Replacement Battery Set 7.01 lb

21% off
New arrival
Sale price $20.87 USD Regular price $26.36
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Set of 2 SigmasTek SP12-5.5HR batteries (12V 5.5AH) for OPTI-UPS PS500 / 500PS UPS units
High rate discharge ensures reliable backup power delivery
Valve regulated, spill-proof batteries for safe use
Low self-discharge maintains charge over time
Factory fresh with 1-year warranty and tested to OEM specs
In stock

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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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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.


Volts & Amps

12 Volts | 5.5 Ah

Terminal Type

F2

SigmasTek SP12-5.5HR Replacement Battery Set — Compatible with OPTI-UPS PS500 / 500PS

Upgrade your OPTI-UPS PS500 / 500PS with this reliable, high-performance replacement UPS battery set. Designed to deliver dependable backup power, these two brand-new SigmasTek SP12-5.5HR batteries provide the performance and reliability required for critical systems. Whether you’re restoring a UPS after end-of-life batteries or improving emergency readiness, this replacement UPS battery set offers consistent discharge characteristics and factory-fresh components to keep your OPTI-UPS PS500 / 500PS operating at peak capacity.

Key Specifications

  • Brand: SigmasTek
  • Model: SP12-5.5HR
  • Voltage: 12 Volts
  • Capacity: 5.5 Ah
  • Quantity: 2 batteries per set
  • Terminal type: F2
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Features: Low Self-discharge, High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatible with: OPTI-UPS PS500 / 500PS UPS units

Benefits

This high-performance UPS battery set is engineered for demanding, short-duration, high-rate discharge scenarios — perfect when the OPTI-UPS PS500 / 500PS must deliver greater power for brief intervals. As a high-performance UPS battery with valve-regulated, spill-proof construction, it resists vibration and minimizes self-discharge for more reliable standby life. These qualities make it an excellent long-lasting battery choice for both home and professional environments.

Durability and safety are emphasized through U.L. recognition and CE certification, and the factory-fresh condition ensures immediate readiness. Because these are replacement batteries specifically matched to the OPTI-UPS PS500 / 500PS, they meet or exceed OEM expectations for replacement UPS battery performance. Typical applications include Uninterruptible Power Supply (UPS) units, emergency power supply systems, and battery-powered tools where dependable short-term power is required.

Technically minded users will appreciate that the set includes two identical SigmasTek SP12-5.5HR batteries tested to deliver consistent output, and should be installed using the existing cables and hardware from your original configuration to ensure safe and correct connections.

Ready to restore reliable backup power to your OPTI-UPS PS500 / 500PS? Order this long-lasting battery replacement today to get fast shipping and a 1 Year Warranty — buy now to secure your high-performance UPS battery set.

Technical Specifications

Voltage12 Volts
Amp Hours5.5 Ah
Terminal TypeF2
Length (in.)3.54
Width (in.)2.76
Height (in.)3.98
Weight (lb.)7.0

Product Highlights

  • Brand Replacement : OPTI-UPS PS500
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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