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-14259

National C25A High Performance Replacement Battery 4.91 lb

24% off
Sale price $38.99 USD Regular price $50.99
Shipping calculated at checkout.
Absorbent Glass Mat (AGM) technology for enhanced durability
Maintenance-free with spill-proof construction for safety
U.L. Recognized and CE Certified for quality assurance
Brand new and factory fresh for reliable performance
1 year warranty ensures peace of mind and support
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

6 Volts | 14 Ah

Terminal Type

Ring Terminal

Replacement National Battery C25A — Compatible with National Battery C25A

Looking for a dependable replacement battery for your National Battery C25A? This high-performance battery meets or exceeds OEM SLA specifications for the National Battery C25A, delivering consistent, reliable power and long service life. Built with Absorbent Glass Mat (AGM) technology and a maintenance-free, spill-proof design, this long-lasting battery is perfect for critical backup and everyday applications. If you need a trustworthy replacement battery for UPS, alarm systems, or portable tools, the National Battery C25A replacement ensures compatibility and performance you can count on.

Key Specifications

  • Compatible Model: National Battery C25A
  • Battery Type: Rechargeable Sealed Lead Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM)
  • Voltage: 6 Volts
  • Capacity: 14 Ah (Amp-hours)
  • Terminal Type: Ring Terminal
  • Design: Maintenance-Free with Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Supplier/Line: SigmasTek

Benefits

  • Durability: The sealed AGM construction resists spills and vibration, providing robust, long-term durability in demanding installations and mobile uses.
  • Long life: This maintenance-free replacement battery is designed for longevity, reducing replacement frequency and lowering lifecycle costs.
  • High performance: Meets or exceeds OEM specifications to provide consistent, reliable power under steady or peak load conditions—ideal as a high-performance battery.
  • Broad applications: Perfect for UPS systems, emergency power backup, security alarms, medical equipment, and power tools that require dependable SLA power.
  • Certified quality: U.L. recognition and CE certification confirm that the battery conforms to recognized safety and manufacturing standards.
  • Easy swap: Ring terminal connection simplifies replacement for systems designed for ring-style terminals, ensuring quick installation for the C25A model.

Don’t wait until power fails—secure a reliable replacement battery for your National Battery C25A today. Click to buy now and get a brand new, factory fresh, long-lasting battery backed by a 1 year warranty.

Technical Specifications

Voltage6 Volts
Amp Hours14 Ah
Terminal TypeRing Terminal
Length (in.)4.25
Width (in.)2.8
Height (in.)5.55
Weight (lb.)4.9

Product Highlights

  • Brand Replacement : National Battery C25A
  • 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.