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SigmasTek  |  SKU: BW-15579

FIAMM FG20451 Reliable Replacement Battery 3.5 lb

25% off
New arrival
Sale price $29.99 USD Regular price $39.99
Shipping calculated at checkout.
Compatible replacement for FIAMM FG20451 model
Uses advanced Absorbent Glass Mat (AGM) technology
Maintenance-free and spill-proof design for safety
U.L. Recognized and CE Certified for quality assurance
Comes brand new with a 1-year warranty
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 AH

Terminal Type

F1

FIAMM FG20451 Replacement Battery — Compatible with FIAMM FG20451

Get dependable power with this replacement FIAMM FG20451 rechargeable Sealed Lead Acid (SLA) battery. Engineered for compatibility and built for dependable operation, this high-performance battery meets or exceeds the OEM specifications for the FIAMM FG20451 model. It offers reliable performance, maintenance-free convenience, and the peace of mind you need for backup and portable power applications.

Key Specifications

  • Compatible Model: FIAMM FG20451
  • Replacement Brand: SigmasTek (replacement)
  • Voltage: 12 Volts
  • Capacity: 5 AH
  • Terminal Type: F1
  • Battery Type: Rechargeable Sealed Lead Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM)
  • Design: Maintenance-Free with Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

Built with AGM technology, this replacement battery is rugged, low-maintenance, and designed for long-term reliability. Its sealed construction prevents leaks and minimizes upkeep, while delivering solid performance under a variety of conditions. As a high-performance battery, it provides consistent power delivery and dependable recharge acceptance, helping extend service life and reduce downtime in critical setups.

The FG20451 replacement excels in applications such as uninterruptible power supplies (UPS), emergency lighting and power, alarm and security systems, mobility aids, and portable tools. Its stable output and vibration-resistant design make it a practical choice for both standby and cyclic use. The long-lasting battery characteristics and the included one-year warranty make this an economical and reliable replacement for the original FIAMM unit.

With U.L. recognition and CE certification, you can trust the safety and manufacturing standards behind this replacement battery. Shipped brand new and factory fresh, the product is ready to install and perform immediately.

Don’t wait—replace your old or failing battery with this high-performance replacement battery compatible with FIAMM FG20451 and restore reliable power today.

Technical Specifications

Voltage12 Volts
Amp Hours5 AH
Terminal TypeF1
Length (in.)3.54
Width (in.)2.76
Height (in.)3.98
Weight (lb.)3.5

Product Highlights

  • Brand Replacement : FIAMM FG20451 Battery
  • Manufacturer: SigmasTek
  • Product Type: SLA Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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