Varta 51814 Powersports · Motorcycle battery 18Ah 100A
Specifications
| Brand | VARTA |
|---|---|
| Part number | 518014015 |
| Voltage (V) | 12 |
| Capacity (C20) | 18Ah (c20) |
| Capacity (C10) | 0Ah (c10) |
| Cold cranking amps (EN) | 100A |
| Technology | Lead-acid |
| Length | 186.00 mm |
| Width | 82.00 mm |
Varta 51814 12V 18Ah 100A is a motorcycle starter battery with standard JIS code (the one on your bike's original label). Ready to use, sealed and vibration-resistant. Fits any model that takes the same JIS reference — the code your mechanic recognises at a glance.
Why this motorcycle battery?
- Same JIS referenceas your bike's original — fits first time
- Sealed and ready to useno acid handling, no refills
- Survives winter storageholds charge through long off-season
Where it fits: the Varta 518014015 is one of our motorcycle batteries, belongs to our Varta batteries and by capacity it sits among our 18Ah batteries.

Varta 51814 Powersports SLI Freshpack 18Ah 100A 12V Motorcycle Battery
The Varta 51814 motorcycle battery (reference 518014015) is the 12 V, 18 Ah and 100 A cold cranking (EN) model from Varta's Powersports SLI Freshpack range, designed for motorcycles, scooters, quads and personal watercraft. Measuring 186 × 82 × 171 mm and with the positive terminal on the right, it is the direct replacement for motorcycles fitted from the factory with an 18 Ah battery in this format.
- Direct replacement for the original motorbike, scooter or quad battery.
- Construction built to withstand the vibration typical of two-wheelers.
- Performs well in the cold and after periods of inactivity.
- High cranking peak in a compact, lightweight format.
Applications of the Varta 51814 battery
The Varta 51814 covers the needs of motorcycles, scooters, quads and personal watercraft with 18 Ah of capacity and a construction built for that use. Check that it matches your current battery in dimensions, terminals and hold-down: this reference weighs 6,35 kg and has a Y10 terminal.
Format and fitting of the Varta 51814
The Varta 51814 is made in the 186 × 82 × 171 mm format and weighs 6,35 kg. The positive terminal on the right determines which side the cables end up on: it is the detail that causes the most purchasing mistakes, so it is worth checking before ordering. Checking the three dimensions and the terminal positions before buying avoids the most common mistake when replacing a battery.
The Varta 51814 and the Powersports SLI Freshpack range
The Powersports SLI Freshpack range brings together Varta's conventional motorcycle batteries, supplied dry with the acid packed separately (freshpack) so they are activated on installation, guaranteeing maximum freshness.
They deliver powerful starting and good vibration resistance for classic motorbikes, scooters and quads: the direct replacement for traditional lead-acid motorcycle batteries.
Unlike a car battery, what matters here is power density in a minimal size and resistance to vibration. It is the direct substitute for the original motorcycle battery, with the advantage of reliable starting even in the cold and after periods of inactivity.
Why choose a Varta battery
When a workshop recommends Varta it is not down to marketing: it is one of the brands with the lowest return rates in the sector, with an application coverage that spans practically the whole European fleet, from the city car to the commercial vehicle.
Varta combines more than a century of experience with Clarios's industrial production: it is the battery many manufacturers choose as standard and one of the most recommended by workshops. Like every lead-acid battery, it is 100% recyclable.
Varta is Europe's leading manufacturer of starter batteries: its production volume and quality controls guarantee consistent reliability batch after batch, something own-brand labels cannot always assure.
Manufacturer's warranty
The Varta 51814 battery comes with the official manufacturer warranty.
Care and maintenance
If the bike goes unused for long spells, a trickle charger greatly extends the battery's life and prevents sulphation. Storing it somewhere dry and checking the terminals at the start of each season helps it start first time. Motorcycle batteries suffer in the cold and when left idle: in winter, a maintenance charger stops the battery from discharging completely. With this care, it will typically deliver well over several years of service.
Technical sheet
Download the official technical sheet for this battery with all the manufacturer data.
Data sheet
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BrandVARTA
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Reference518014015
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ModelVarta Powersports SLI Freshpack
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Voltage (V)12
-
Length186.00 mm
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Width82.00 mm
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Height171.00 mm
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Weight6.35 Kgs
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TechnologyLead-acid
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EAN4016987140543
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Terminal layoutPositive terminal on the right
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Terminal typeY10
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JIS51814
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Cold cranking amps (EN)100A
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Capacity (C20)18Ah (c20)
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Capacity (C10)0Ah (c10)
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ETN518014015A514
Specific References
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EAN134016987140543
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MPN518014015
Codes and references Varta 518014015
| Brand | Varta · see all Varta batteries |
|---|---|
| Manufacturer range | Powersports SLI Freshpack |
| Manufacturer part number (MPN) | 518014015 |
| Also known as | Varta Powersports SLI Freshpack 518014015 |
| JIS equivalents | 51814 |
| ETN code | 518014015A514 (short form 518 014 015) |
| EAN-13 barcode | 4016987140543 |
| Dimensions (length × width × height) | 186 × 82 × 171 mm (186x82x171) |
Varta 518014015: best-selling equivalent or higher-spec batteries
The Varta 518014015 is interchangeable with these equivalent references: 519013017 (Varta). Higher-technology alternatives that can replace it: 518909022 (Varta).
| Product | Specifications | Technology | Price | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Varta
51814
This battery
|
12V 18Ah 100A | Lead-acid | 145,60 € | |||||||||||||||||||||
Varta
51913
Bigger sister |
12V 19Ah 100A | Lead-acid | 146,20 € +0,60 € | |||||||||||||||||||||
| ||||||||||||||||||||||||
| 51814 | 51913 | |
|---|---|---|
| Capacity | 18 Ah | 19 Ah |
| Cold cranking (EN) | 100 A | 100 A |
| Technology | Lead-acid | Lead-acid |
| Dimensions (mm) | 186 × 82 × 171 | 186 × 82 × 171 |
| Positive terminal | Positive terminal on the right | Positive terminal on the right |
| Price | 145,60 € | 146,20 € |
Varta
YT19BL
Upgrade: AGM Varta 51814 vs Varta YT19BL
Upgrade: AGM · −55,65 €
It is the sealed AGM of the same size: maintenance-free, it withstands vibration and winter lay-ups better than the 51814. Compared with the 51814 it has 120 A of cold cranking more. It costs 55,65 € less. Essential if your bike came with AGM; if it had a conventional battery, it is a durability and leak-safety upgrade, not an obligation.
| 51814 | YT19BL | |
|---|---|---|
| Capacity | 18 Ah | 18 Ah |
| Cold cranking (EN) | 100 A | 220 A |
| Technology | Lead-acid | AGM |
| Dimensions (mm) | 186 × 82 × 171 | 186 × 82 × 171 |
| Positive terminal | Positive terminal on the right | Positive terminal on the right |
| Price | 145,60 € | 89,95 € |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
Other 18Ah batteries: We stock 28 models of 18 Ah to compare by price, technology and cold cranking: see all 18Ah batteries. Same size (186 × 82 × 171 mm): batteries of 186 × 82 × 171 mm.
Recommended accessories
Frequently asked questions
How should this motorcycle battery be charged?
With a 12 V motorcycle charger delivering at most 10 % of its capacity: 1.8 A for its 18 Ah. High-current car chargers can damage it. If the bike is laid up for the winter, keep it on a maintenance charger.
Does it need maintenance?
Yes: it is a conventional lead-acid battery. Check the electrolyte level from time to time and, if it drops, top up with distilled water to the mark.
What is the service life of the 51814 model?
As a guide, you can expect the Varta 51814 to last 3 to 5 years, keeping it charged when the bike is not in use, although the real figure may be higher or lower. Actual lifespan varies with climate (cold starts, heat evaporating the electrolyte), with usage and short journeys, with the condition of the alternator and charging system, with power draw while parked and with maintenance.
What are the dimensions of the Varta 51814 battery?
The Varta 51814 takes up 186×82×171 mm (length, width and height, terminals included). Before buying, measure the space in your motorcycle: one extra millimetre can stop the hold-down clamp from closing.
On which side is the positive of the 51814 model?
On the Varta 51814, the polarity is positive on the right. To check, stand the battery in front of you with the terminals nearest you: the positive (+) is the one with the red ring. Compare it with the battery you are replacing: if it does not match, cables must be lengthened or the system reconfigured, with a risk of short circuit.
Will the Varta 51814 battery fit my motorcycle?
The quickest way is to enter your number plate in the finder: DGT/DVLA/KBA detect model and engine. You can also look at the "Compatible vehicles" tab, verified by our technical team, or send us make, model, engine and year on WhatsApp; we answer during business hours (Mon–Fri 10:00–13:30 and 16:30–18:00 (Spanish time, CET)). The motorcycle manufacturer's specifications always take priority over our tables.
What are the equivalents of the 51814 model?
See the "Equivalents" section of this page for the recommended options at the same performance level. A direct equivalent needs what this 51814 offers: 186×82×171 mm, positive on the right, the same Ah and CCA and conventional technology.
Varta 51814 or Varta 51913: which one to choose?
Same family as the 51814, one step up in performance. Compared with the 51814 it has 1 Ah more. It costs 0,60 € more. Worth it on big-displacement bikes, with lots of electrical equipment or that sleep in the cold; on an average bike the 51814 does the job.
Varta 51814 or Varta YT19BL: which one to choose?
It is the sealed AGM of the same size: maintenance-free, it withstands vibration and winter lay-ups better than the 51814. Compared with the 51814 it has 120 A of cold cranking more. It costs 55,65 € less. Essential if your bike came with AGM; if it had a conventional battery, it is a durability and leak-safety upgrade, not an obligation.
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