? Are you trying to find a reliable replacement battery for your Harley Davidson FLHF Sport Glide II 1340 1982-1982 that arrives ready to use and fits without hassle?
Product overview
You’ll find this product listed as “Compatible with Harley Davidson FLHF Sport Glide II 1340 1982-1982 Yuasa battery already ready to use Y50-N18L-A 12V/20AH batteries for starting motorcycles, motorcycles specifications.” It’s a Yuasa Y50-N18L-A sealed lead-acid battery, specified at 12 volts and 20 amp-hours, supplied as complete and ready to use. The listing also mentions “Tribute helmet hood,” which typically indicates the seller includes some accessory or protective cover, so double-check the exact contents with the vendor if that matters to you.
This battery is targeted at owners who want a drop-in replacement for older Harley Davidson models where the Y50-N18L-A specification is appropriate. You’ll like that it’s sealed and ready to install, which reduces pre-installation maintenance and acid handling compared with flooded batteries.
Key selling points
- It’s a genuine Yuasa model designation (Y50-N18L-A) known for motorcycle applications.
- Supplied ready to use out of the box — no acid pouring or long charging cycles required.
- Intended compatibility is clearly stated in the title for owners of the Harley Davidson FLHF Sport Glide II 1340 1982-1982.
- Includes a tribute helmet hood or protective accessory as advertised by the seller — confirm whether this is included before purchase.
Specifications
Below is a breakdown of the key specifications you’ll use to evaluate whether this battery meets your needs. Where the vendor or manufacturer does not state a detail, the table notes that you should verify with the seller or refer to official Yuasa documentation.
| Specification | Detail |
|---|---|
| Product name (as listed) | Compatible with Harley Davidson FLHF Sport Glide II 1340 1982-1982 Yuasa battery already ready to use Y50-N18L-A 12V/20AH batteries for starting motorcycles, motorcycles specifications |
| Model | Yuasa Y50-N18L-A |
| Chemistry | Sealed lead-acid (likely AGM-type construction typical of Yuasa motorcycle batteries) |
| Voltage | 12V |
| Capacity | 20Ah (20 amp-hours) |
| Cold Start / CCA | Not specified by seller — verify with manufacturer/seller (many Y-series motorcycle batteries offer CCA in the low hundreds) |
| State on arrival | Complete and ready to use (pre-charged, sealed) |
| Compatibility advertised | Harley Davidson FLHF Sport Glide II 1340 1982-1982 (title indicates model fitment) |
| Included accessories | Tribute helmet hood (as advertised — confirm before purchase) |
| Maintenance | Low/maintenance sealed type (no acid filling) |
| Warranty | Not specified in listing — check seller for coverage and duration |
If you need precise CCA, exact dimensions, or weight for fitment checks, contact the seller or consult Yuasa’s official datasheet for the Y50-N18L-A to confirm those values before buying.
Compatibility and fitment
You’ll appreciate that the title calls out a specific Harley model: FLHF Sport Glide II 1340 1982-1982. That helps you quickly decide whether this battery is intended for your machine. Still, titles can be imperfect, so you should confirm fitment manually.
To make sure the battery fits physically and electrically in your motorcycle: compare your stock battery group size, terminal type and position, and hold-down method with the Y50-N18L-A’s specifications. Also check that the capacity (20Ah) suits your electrical load and accessories.
How to verify fitment quickly
- Locate your current battery and note the group size or model stamped on it.
- Check terminal orientation (left/right, top/bottom) and ensure the replacement matches so cables reach comfortably.
- Measure the tray and hold-down dimensions on your bike and compare with the battery’s physical size — if the listing doesn’t include dimensions, ask the seller or get the official Yuasa datasheet.
- Verify connector types; if terminals differ, you may need new adapters or to change cable clamps.
Installation tips
Installing this battery is straightforward if you follow safe, methodical steps. Because it’s sealed and shipped ready to use, you won’t need to add electrolyte or perform a lengthy initial charging step; you’ll still want to verify charge level and clean connections.
Step-by-step guidance:
- Turn your ignition off and remove any key.
- Disconnect the negative (ground) terminal first, then the positive terminal — this prevents accidental shorting.
- Remove the old battery and inspect the tray, terminals, and wiring for corrosion or damage. Clean the tray and terminal clamps if needed.
- Place the new Yuasa Y50-N18L-A into the tray, aligning terminals and hold-downs.
- Reconnect the positive terminal first, then the negative. Tighten clamps securely but avoid over-tightening plastic posts.
- Start the bike to confirm operation and check charging system voltage with a multimeter (typically about 13.5–14.5V at a running engine).
- Secure any vent caps or covers, and replace the seat/cover per your motorcycle’s reassembly steps.
You should keep the battery upright and stable during installation. Handle with care, and wear gloves and eye protection if you’re uncomfortable with battery work.
Performance and starting power
This Yuasa Y50-N18L-A is positioned as a starting battery — its primary job is to deliver reliable cranking power so you can fire up your Harley’s 1340cc engine. The 20Ah capacity indicates a balance of energy storage and compact size suitable for many motorcycles.
Expectations you should have:
- Strong, consistent cranking for normal use. You’ll usually get reliable starts in temperate conditions with a healthy battery.
- If you install additional electrical accessories (heated gear, aftermarket stereos, lighting), your battery’s discharge profile may be heavier, so monitor usage.
- Cold weather reduces cranking performance; although sealed lead-acid batteries can handle cold, you’ll notice reduced starter effectiveness if temperatures plunge. Consider a storage charger or maintaining a trickle/float charge in winter if the bike sits unused.
If you operate in very cold climates or frequently short-trip the bike, you may want a battery with higher cold-cranking capability or consider keeping a smart charger on hand to maintain optimal charge.
Real-world start behavior
When the battery is in good condition, you’ll experience quick engine spin-up and no dimming lights during cranking. If you notice sluggish starts, repeated no-starts, or electronic glitches, you’ll want to test the battery voltage and charging system before assuming a battery replacement is required.
Maintenance and care
A big advantage of sealed Yuasa motorcycle batteries is lower day-to-day maintenance compared with flooded cells. Still, you’ll get the longest life by performing a few simple actions.
Routine tips:
- Keep terminals clean and corrosion-free. Use a baking soda/water paste and a brush if you see build-up, then coat terminals lightly with dielectric grease.
- Ensure tight, secure terminal clamps to avoid voltage drop or arcing.
- Avoid prolonged storage with the battery at low state of charge — that accelerates sulfation and shortens life.
- Use a smart trickle/float charger if your bike will sit unused for more than a couple of weeks.
Even sealed batteries can benefit from a periodic health check with a voltmeter or battery tester. When resting voltage drops below ~12.4V, you should recharge to prevent deep discharge damage.
Charging and storage best practices
The Y50-N18L-A arrives ready to use, but how you charge and store it matters for longevity.
Charging recommendations:
- Use a charger designed for lead-acid motorcycle batteries. Smart chargers with AGM modes (if the battery is AGM-type) are ideal.
- Avoid high-voltage, non-regulated chargers that can overcharge and damage the battery.
- If you must perform a manual charge, follow manufacturer charging voltage guidelines (typically 13.6–14.8V during bulk charge depending on temperature and battery type). When in doubt, use a charger with automatic regulation.
Storage recommendations:
- Store in a cool, dry place away from direct sunlight and freezing conditions. Cold reduces capacity temporarily, but deep freeze can damage some batteries.
- Keep the battery fully charged before storage and check the voltage periodically — a monthly check or connection to a float charger helps maintain long life.
- If you keep the battery installed in a bike during storage, either disconnect the negative terminal or attach a battery maintainer to prevent parasitic drain.
If you ride infrequently or live in a cold climate, a small smart charger or maintainer is one of the best investments to preserve battery life.
Lifespan and what to expect
Motorcycle battery life depends on many factors: usage patterns, charging habit, temperature extremes, vibration, and accessory load. For sealed lead-acid motorcycle batteries like the Y50-N18L-A, you can commonly expect anywhere from 2 to 5 years of service under typical usage.
Factors that shorten life:
- Repeated deep discharges and prolonged low charge states.
- High temperature exposure and heat cycles.
- Constant parasitic drain from accessories or poor charging system performance.
- Severe vibration and poor mounting in the tray.
To maximize lifespan, keep the battery charged, protect it from extremes, and make sure your motorcycle’s charging system is functioning correctly (alternator/stator and regulator/rectifier).
Safety and recycling
You’ll handle fewer hazards with a sealed battery than a flooded one, but safety rules still apply.
Key safety reminders:
- Avoid short-circuiting positive and negative terminals — it can create sparks, heat, or even fires.
- Use eye protection and gloves if you inspect or clean the battery area. While sealed batteries typically don’t leak, physical damage or extreme heat can cause leakage.
- Dispose of or recycle old batteries at a certified battery recycling facility. Most retailers or service shops accept used motorcycle batteries for recycling, and local laws often require proper disposal.
- If the battery is punctured or damaged, keep it away from open flames and handle it as hazardous waste per local regulations.
Recycling is important: lead and acid are hazardous but recyclable, and recycling reduces environmental harm and recovers valuable materials.
Pros and cons
You should weigh the advantages and trade-offs before purchasing.
Pros:
- Ready to use out of the box — no acid filling required.
- Known Yuasa model designation provides confidence in fitment and quality if the seller uses genuine parts.
- Sealed construction reduces maintenance and spills.
- Advertised compatibility with your Harley model simplifies selection.
Cons:
- The listing may omit detailed specs such as CCA and physical dimensions — verify before purchase.
- Lifespan is dependent on usage and charging habits, and sealed lead-acid is heavier than lithium alternatives.
- If you need very high cold-cranking performance or minimal weight, you might prefer a lithium battery instead (but those come with different trade-offs and cost).
Alternatives to consider
If you’re choosing a battery, consider the alternatives and how they align with your priorities.
Comparison table — common battery types for motorcycles:
| Battery Type | Typical Advantages | Typical Drawbacks |
|---|---|---|
| Sealed lead-acid (AGM) — like Yuasa Y50-N18L-A | Reliable, relatively affordable, maintenance-light, good for starting | Heavier, lower energy-per-weight than lithium, moderate lifespan |
| Flooded lead-acid | Lower cost, tried-and-true | Requires maintenance, spills possible, not shipped ready to use |
| Lithium (LiFePO4) | Much lighter, higher energy density, retains voltage well | Higher upfront cost, requires compatible charging/monitoring, sometimes limited warranty or sensitivity to cold |
| Gel | Resistant to vibration, sealed | Less common for high-crank applications, sensitive to overcharge |
If weight savings and faster cold cranking are paramount, lithium might suit you better — but ensure your bike’s charging system and electrical components are compatible and that you’re comfortable with the higher purchase price. If you want proven, simple, and cost-effective reliability, a sealed AGM from a reputable maker like Yuasa is often the sensible choice.
Troubleshooting common issues
If you encounter problems after installing the battery, here’s how you can quickly triage the situation.
Common problem and quick fixes:
- Bike won’t start but lights on: Check battery voltage with a multimeter. If voltage is above ~12.4V, inspect starter and connections. If below ~12V, charge battery fully.
- Clicking when attempting to start: That’s often a sign of low battery voltage or corroded/loose connections. Clean and tighten clamps and recharge battery.
- Dimming lights while idling: Could indicate charging system shortfall — test system voltage at idle and at higher RPMs (should rise to ~13.5–14.5V when charging).
- Rapid discharge while parked: Look for parasitic draw from alarms, aftermarket electronics, or wiring faults.
If you can’t resolve the issue with charging and checking connections, consider having your bike’s charging system tested at a shop to rule out stator/regulator faults.
Warranty, authenticity, and buying tips
When you order this battery, you should confirm warranty and authenticity details with the seller.
Buying tips:
- Ask for warranty length and coverage specifics before buying; some retailers provide 6–24 months depending on brand and seller.
- Verify the battery is a genuine Yuasa product — look for manufacturer markings and buy from reputable sellers to avoid counterfeit or old-stock units.
- Check the manufacture/date code and ensure the battery was not sitting in inventory for a long time. A battery loses capacity sitting unused, so fresher stock is better.
- Read return policies in case the battery doesn’t fit or arrives damaged.
If the seller advertises the tribute helmet hood or other accessories, request confirmation that the item will be included and not just listed for marketing.
Who should buy this battery?
You’ll find this battery well-suited if:
- You own a Harley Davidson FLHF Sport Glide II 1340 1982-1982 (or a bike with compatible battery requirements) and want a direct, ready-to-install replacement.
- You prefer a sealed lead-acid battery that requires little maintenance and is cost-effective compared with lithium options.
- You’re looking for a reputable brand designation (Yuasa) with broad support in the motorcycle market.
If you need minimal weight, maximum cold-cranking power, or a high-cycle deep-cycle capability (for heavy accessory use), you might consider other battery chemistries or higher-capacity models.
Frequently asked questions (FAQs)
Q: Will this battery fit my Harley exactly?
A: The listing specifically names the Harley Davidson FLHF Sport Glide II 1340 1982-1982, but always check your bike’s battery group size, terminal layout, and tray dimensions. Verify the Y50-N18L-A’s physical dimensions and terminal orientation with the seller or manufacturer datasheet.
Q: Does the battery come pre-charged and ready to use?
A: Yes — the product states “already ready to use,” meaning it arrives charged and sealed, which eliminates the need to add acid or perform a long initial charge.
Q: Is this an AGM battery?
A: The listing does not explicitly say “AGM” but Yuasa’s sealed motorcycle batteries in this format are typically AGM-style. Confirm with the seller if AGM designation is important to you.
Q: How long will the battery last?
A: Typical lifespan for sealed lead-acid motorcycle batteries is 2–5 years depending on use, charging habits, and environmental conditions. Proper charging and storage extend life.
Q: What is “Tribute helmet hood”?
A: The listing includes that phrase in the product details. It likely refers to an accessory or cover included by the seller. Ask the seller to confirm what exactly is provided with your purchase.
Q: Can I use a lithium charger?
A: No — lithium batteries require chargers configured for their chemistry. For this lead-acid unit, use a charger suitable for sealed lead-acid/AGM batteries. Using a lithium charger could mismanage charging and harm the battery.
Final verdict
If you want a straightforward, ready-to-install replacement battery for your Harley Davidson FLHF Sport Glide II 1340 1982-1982, the Yuasa Y50-N18L-A 12V/20Ah offering is a practical, no-fuss option. You’ll benefit from a sealed construction that reduces maintenance and the convenience of receiving a battery ready to fit. Just make sure you confirm the physical dimensions, terminal orientation, and any warranty details with the seller before purchasing.
In general, choose this battery if you value reliability, ease of installation, and the cost-effectiveness of sealed lead-acid technology. If weight savings, extreme cold performance, or longer warranty coverage are higher priorities, consider comparing lithium or higher-spec AGM alternatives while confirming compatibility with your motorcycle’s charging system.
If you want, I can help you prepare a checklist to send to the seller to confirm fitment, warranty, CCA, and included accessories before you buy. Which details do you want to verify first?
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