Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com

WELCOME5
SigmasTek  |  SKU: BW-15393

FirstPower FP1245HR-F2 High Performance Replacement Battery 3.5 lb

17% off
New arrival
Sale price $29.99 USD Regular price $35.99
Shipping calculated at checkout.
Absorbent Glass Mat (AGM) technology for enhanced durability
Maintenance-free and spill-proof design for hassle-free use
U.L. recognized and CE certified for safety and quality assurance
Brand new, factory fresh for reliable performance
1-year warranty guarantees long-term peace of mind
In stock

— Ready to ship immediately

Free shipping

Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe

Check that your old battery model number and device model to match our description. This makes sure they work together.


We ship your order same day if you buy it before 4 PM EST.

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

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.

Disclaimer

⚠️ 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 | 5.5 Ah

Terminal Type

F2

FirstPower FP1245HR-F2 Replacement Battery — Compatible with FirstPower FP1245HR-F2

This replacement FirstPower FP1245HR-F2 battery delivers reliable compatibility, consistent performance, and proven reliability for devices that require the FirstPower FP1245HR-F2 model. Built with Absorbent Glass Mat (AGM) technology and a sealed, maintenance-free design, this high-quality replacement battery is ideal when you need a trustworthy, high-performance battery that installs easily and performs dependably under load. Whether you are restoring backup power to a UPS, maintaining emergency lighting, or servicing portable equipment, the FirstPower FP1245HR-F2 replacement is engineered for long life and safe operation.

Key Specifications

  • OEM Model: FirstPower FP1245HR-F2
  • Replacement Brand: SigmasTek
  • Voltage: 12 Volts
  • Capacity: 5.5 Ah
  • Terminal Type: F2
  • Battery Chemistry: Sealed Lead Acid (SLA) with AGM Technology
  • Design: Maintenance-Free, Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

Designed for durability, this replacement battery provides consistent power delivery through AGM technology, which helps resist vibration, reduce self-discharge, and provide dependable performance across repeated charge/discharge cycles. As a high-performance battery option, the FirstPower FP1245HR-F2 replacement offers enhanced cycle stability and dependable cranking and standby power where needed. Its sealed, maintenance-free design eliminates the need for watering and reduces leakage risk, making it safer and easier to install and maintain.

This long-lasting battery is an excellent choice for standby and cyclic applications. Typical uses include UPS systems, emergency lighting and backup power, security and alarm systems, medical equipment, portable tools, and telecommunications. The F2 terminal ensures a secure connection in equipment designed for that terminal style, and the U.L. and CE certifications confirm safety standards for regulated applications.

If you need a dependable replacement battery that meets or exceeds OEM SLA specifications, this FirstPower FP1245HR-F2 replacement delivers. It provides the confident performance expected from a long-lasting battery while remaining cost-effective and ready to install.

Ready to restore reliable power? Add the FirstPower FP1245HR-F2 replacement battery to your cart now and enjoy a high-performance battery backed by a 1 year warranty.

Technical Specifications

Voltage12 Volts
Amp Hours5.5 Ah
Terminal TypeF2
Length (in.)3.54
Width (in.)2.76
Height (in.)3.98
Weight (lb.)3.5

Product Highlights

  • Brand Replacement : FirstPower FP1245HR-F2 Battery
  • Manufacturer: SigmasTek
  • Product Type: SLA Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.