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SigmasTek  |  SKU: BW-13959

Power Sonic PS-640 High-Performance Compatible Replacement Battery 1.59 lb

15% off
Sale price $21.99 USD Regular price $25.99
Shipping calculated at checkout.
Absorbent Glass Mat (AGM) technology for enhanced performance
Maintenance-free with spill-proof design for safety and convenience
U.L. Recognized and CE Certified for quality assurance
Brand new and factory fresh for reliable use
Backed by a 1-year warranty for peace of mind
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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

6 Volts | 4.5 AH

Terminal Type

F1

Power Sonic PS-640 Replacement Battery — Compatible with PS-640

Restore dependable power with this Power Sonic PS-640 replacement battery, engineered to meet or exceed OEM SLA battery specifications. This rechargeable Sealed Lead Acid (SLA) unit uses Absorbent Glass Mat (AGM) technology to deliver consistent performance and a maintenance-free, spill-proof design. If you're looking for a high-performance battery that is compatible with PS-640 applications, this replacement battery offers reliable output and peace of mind.

Key Specifications

  • Model Compatibility: Power Sonic PS-640 (replacement)
  • Battery Type: Rechargeable Sealed Lead Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Design: Maintenance-Free Design with Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Brand: SigmasTek
  • Voltage: 6 Volts
  • Capacity: 4.5 AHF1
  • Compliance: Meets or exceeds OEM SLA battery specifications

Benefits

This replacement battery is built to provide durable, long-lasting service across many applications. The AGM construction increases resilience against vibration and shock while improving charge acceptance, making it a strong performer in frequent-use environments. As a long-lasting battery solution, it minimizes downtime and maintenance needs when compared to older or flooded designs.

The maintenance-free and spill-proof build ensures safer installation and lower lifecycle maintenance, ideal for enclosed electronics and mobile setups. Certifications from U.L. and CE confirm the product meets recognized safety and quality standards so you can deploy it in residential, commercial, and industrial settings with confidence.

Common uses include backup power for UPS systems, emergency lighting circuits, security and alarm systems, medical instruments, and portable equipment such as tools and testers. This replacement battery performs well under load and provides a consistent power profile for critical backup and standby applications.

Don’t wait until a failing battery interrupts your operations. Purchase the Power Sonic PS-640 replacement battery today to secure a high-performance, long-lasting battery that restores reliable power to your equipment — backed by a 1 year warranty.

Technical Specifications

Voltage6 Volts
Amp Hours4.5 AH
Terminal TypeF1
Length (in.)2.76
Width (in.)1.86
Height (in.)3.94
Weight (lb.)1.59

Product Highlights

  • Brand Replacement : Power Sonic PS-640
  • Manufacturer: SigmasTek
  • Product Type: SLA Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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