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SigmasTek  |  SKU: BW-2609

Best Power Patriot II Pro 400 UPS High Performance Replacement Battery 5.99 lb

24% off
New arrival
Sale price $38.99 USD Regular price $50.99
Shipping calculated at checkout.
Designed for high power output in short bursts for UPS units
Valve Regulated Spill Proof to prevent leaks and reduce maintenance
Low Self-discharge extends battery life during storage
U.L. Recognized and CE Certified for dependable performance
Factory Fresh with 1 Year Warranty and quick shipping
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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⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

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


Volts & Amps

12 Volts | 9 AH

Terminal Type

F2

SigmasTek SP12-9HR Replacement for Best Power Patriot II Pro 400 UPS

The SigmasTek SP12-9HR is a precisely engineered replacement for the Best Power Patriot II Pro 400 UPS, delivering compatibility, safety, and consistent performance. This brand new, factory-fresh replacement UPS battery offers valve-regulated, spill-proof construction and is designed for high rate discharge UPS applications. Certified for quality and backed by a 1 year warranty, it’s an excellent choice for restoring critical backup power.

Key Specifications

  • Compatible Model: Best Power Patriot II Pro 400
  • Replacement Model: SigmasTek SP12-9HR
  • Voltage & Capacity: 12 Volts 9 AH
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated, Spill Proof
  • Feature: Low Self-discharge
  • Durability: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Installation Note: Use existing cables and hardware from original configuration

Benefits

This replacement UPS battery is built to provide high performance when your Best Power Patriot II Pro 400 requires reliable backup power. The high rate discharge design ensures short-duration high power delivery for systems that need rapid bursts of energy. The valve-regulated, spill-proof construction reduces maintenance and the low self-discharge property keeps stored units ready for service.

As a durable long-lasting battery solution, it offers high vibration resistance to maintain performance under demanding conditions. This makes it an ideal choice for uninterruptible power supply units, emergency power systems, and battery-powered tools where dependable standby power is crucial. The UL recognition and CE certification add the necessary safety and regulatory reassurance for installations in both residential and commercial environments.

Our technical staff tests every battery to ensure it meets or exceeds OEM specifications, helping you avoid compatibility surprises and ensuring consistent on-demand performance. For help with installation or account setup, contact customer service at .

Purchase your Best Power Patriot II Pro 400 replacement UPS battery now to secure a high-performance UPS battery and a reliable, long-lasting battery. Fast shipping and a 1 year warranty make it simple to restore full backup capability today.

Technical Specifications

Voltage12 Volts
Amp Hours9 AH
Terminal TypeF2
Length (in.)5.95
Width (in.)2.56
Height (in.)3.7
Weight (lb.)5.99

Product Highlights

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

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