Welcome to our store. Proudly serving customers across North America for years. Learn more

For support or quotes: sales@batteryweb.com

WELCOME10
SigmasTek  |  SKU: BW-19342

Harley-Davidson FX Series 1200CC Electric Start Compatible Replacement Battery (1971-1978) 12.07 lb

10% off
Sale price $84.99 USD Regular price $93.99
Shipping calculated at checkout.
Maintenance-free AGM design eliminates the need for acid filling
Spillproof and leakproof for safe, hassle-free use
U.L. Recognized and CE Certified for guaranteed quality
Superior starting power with deep cycle capacity for reliable performance
Resistant to extreme freeze, heat, and vibration conditions
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 | 18 Ah

Terminal Type

Nut & Bolt

Harley-Davidson 1200CC FX Series, Electric Start, 1971-1978 Replacement Battery

Perfectly matched to the Harley-Davidson 1200CC FX Series with electric start (1971-1978), this AGM maintenance-free replacement battery offers a clean, reliable upgrade with superior starting power and deep-cycle performance. Say goodbye to acid filling and messy maintenance—this factory-fresh battery is designed to handle the demanding, high-rate discharge requirements of classic Harley engines while delivering consistent, long-lasting service.

Key Specifications

  • Compatible Model: Harley-Davidson 1200CC FX Series, Electric Start, 1971-1978
  • Brand: SigmasTek (replacement for Harley-Davidson)
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Terminal Type: Nut & Bolt
  • Design: Absorbed Glass Mat (AGM) Maintenance-Free
  • Spillproof and Leakproof Design
  • Valve Regulated Vent System
  • Certifications: U.L. Recognized and CE Certified
  • Resistance: Extreme Freeze, Heat and Vibration Resistance
  • Performance: Superior Starting Power and Deep Cycle Capacity
  • Condition: Brand New, Factory Fresh
  • Warranty: 6 Month Warranty

Benefits

This replacement battery stands out as a high-performance battery that blends rugged durability with practical convenience. Its AGM, maintenance-free design makes it spillproof and leakproof, which is especially valuable on a motorcycle where safety and cleanliness matter. The valve regulated vent system and industry certifications (U.L., CE) reflect a commitment to safety and quality manufacturing.

Expect dependable starts every ride thanks to superior starting power and the battery’s high-rate discharge capability. The unit’s deep-cycle capacity supports accessories and electrical loads beyond ignition—helpful when running lights, horns, or auxiliary devices. Built to resist extreme freeze, heat, and vibration, this battery is designed to last, offering riders a long-lasting battery solution that holds up under real-world conditions.

AGM batteries are also versatile for other demanding applications such as compact UPS systems, emergency power modules, and portable tools where reliable bursts of power are essential. For owners restoring or maintaining a 1971–1978 FX electric start model, this battery is a direct route to dependable, maintenance-free power.

Ready to upgrade your ride? Purchase the Harley-Davidson 1200CC FX Series, Electric Start, 1971-1978 replacement battery now for a rugged, long-lasting battery with fast shipping and a 6 month warranty. Add to cart today to keep your classic Harley starting strong.

Technical Specifications

Voltage12 Volts
Amp Hours18 Ah
Terminal TypeNut & Bolt
Cold Cranking Amps (CCA)270
Length (in.)6.88
Width (in.)3.43
Height (in.)6.13
Weight (lb.)12.06

Product Highlights

  • Brand Replacement : Harley-Davidson
  • Manufacturer: SigmasTek
  • Product Type: Motorcycle
  • Warranty: 6 Months
  • Bulk Orders: sales@batteryweb.com

Connections & Interface

  • Polarity: "'+/-"

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • 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.


🔋 Battery Finder
🔋
Battery Assistant AI
Online — BatteryWeb.com