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SigmasTek  |  SKU: BW-16530

National Power GT090S3 High Performance Replacement Battery 12.66 lb

21% off
Sale price $55.99 USD Regular price $70.99
Shipping calculated at checkout.
Absorbent Glass Mat (AGM) technology for enhanced durability
Maintenance-free design with spill-proof construction
U.L. Recognized and CE Certified for safety and reliability
Brand new, factory fresh for optimal performance
1-year warranty ensures 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

12 Volts | 18 Ah

Terminal Type

Nut & Bolt

National Power GT090S3 Replacement Battery — Compatible with National Power GT090S3

The National Power GT090S3 replacement battery combines OEM-compatible design with AGM technology to provide reliable backup and consistent performance. Whether you’re restoring power to a UPS, emergency system, or portable device, this long-lasting battery offers a maintenance-free, spill-proof solution engineered to meet or exceed OEM SLA specifications for the National Power GT090S3 model.

Key Specifications

  • Model: National Power GT090S3
  • Battery Type: Rechargeable Sealed Lead Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM)
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Terminal Type: Nut & Bolt
  • Brand: National Power; SigmasTek
  • Design: Maintenance-Free, Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

  • Exceptional durability: The AGM construction and sealed design deliver resistance to vibration, spills, and environmental stress for prolonged reliability.
  • Extended service life: Designed for steady cyclic and standby performance to provide a long-lasting battery solution for routine replacements.
  • Consistent high performance: Optimized for efficient charging and stable discharge profiles that support sensitive electronics and critical loads.
  • Certified safety: U.L. Recognized and CE Certified to meet regulatory safety and manufacturing standards.
  • Wide application range: Suitable for UPS systems, emergency power, security systems, medical devices, telecom hardware, and other backup applications.
  • Reliable connectors: Nut & bolt terminals allow for tight, secure electrical connections to reduce resistance and improve current delivery.
  • New and warranted: Delivered brand new and factory fresh with a 1 year warranty to ensure dependable performance and buyer confidence.

Replace your worn battery with the National Power GT090S3 replacement battery today. Order now to secure a high-performance battery that restores reliable backup power and keeps your systems running when it matters most.

Technical Specifications

Voltage12 Volts
Amp Hours18 Ah
Terminal TypeNut & Bolt
Length (in.)7.13
Width (in.)3.0
Height (in.)6.59
Weight (lb.)12.65

Product Highlights

  • Brand Replacement : National Power GT090S3
  • Manufacturer: SigmasTek
  • Product Type: SLA Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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