Harley-Davidson ® FL, FLH Series (Touring) (1985 - '96) Motorcycle Batteries

Reliability for the Evolution Era: FL/FLH Battery Guide

The 1985-1996 Touring series helped save the company from the brink of bankruptcy by proving that a Harley-Davidson could be both soulful and reliable. Maintaining that reliability starts with your electrical system. Because these earlier Touring models often lack the complex engine management systems of modern bikes, they are incredibly durable, but they still require the high reserve capacity and specific dimensions of an 18L-style battery to support their large starters and classic touring accessories.

The Big Crank Advantage

The Big Crank ETX18L is the "insider's secret" for Evolution riders. Manufactured in the same American facility that produces many OEM batteries, the Big Crank features patented molded-in terminals. This design is crucial for older Touring bikes, as it provides a rock-solid connection that resists the unique vibration frequencies of the Evolution powertrain, preventing the "loose terminal" syndrome that often mimics a dead battery.

Frequently Asked Questions

Which 1985-1996 Touring models does this battery fit?

This category covers all FL and FLH sub-models within this year range, including the Electra Glide (Classic, Sport, and Ultra), the Tour Glide, and the early Road King models introduced in 1994. These bikes utilize the ETX18L footprint (equivalent to Yuasa YTX24HL and Y50-N18L-A-CX) to ensure reliable starting for the 1340cc (80 CI) engine.

Is this battery an upgrade over the original equipment?

Absolutely. While Harley-Davidson transitioned from "flooded" batteries to AGM technology during this production era, many older models originally shipped with liquid-filled units that required regular maintenance and could leak acid onto your bike's frame. The Big Crank ETX18L uses modern Absorbent Glass Mat (AGM) technology, which is 100% leak-proof and significantly more resistant to the vibration-related failures common in vintage motorcycles.

Can I use a Lithium battery in an older Evo Touring bike?

Yes, Lithium (LiFePO4) is a great way to save significant weight. However, for these classic machines, we recommend ensuring your charging system (stator and regulator/rectifier) is in good working order before switching. If you choose lithium, always use a Lithium-specific charger to maintain the battery properly during storage.

What maintenance is required for the Big Crank ETX18L?

The Big Crank is maintenance-free, meaning you never have to add acid or water. To maximize its lifespan, often reaching 5+ years, we recommend using a Battery Tender if the bike sits for more than two weeks, as this prevents the chemical sulfation that can occur during inactivity.

Model Fitment Reference

This category is the definitive source for batteries fitting 1985-1996 Harley-Davidson Touring models, including:

• FLHT / FLHTC / FLHTCU: Electra Glide Standard, Classic, and Ultra Classic.
• FLHR: Road King (1994-1996).
• FLHS: Electra Glide Sport.
• FLTC / FLTCU: Tour Glide Classic and Ultra Classic.