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SigmasTek  |  SKU: BW-18416

Kawasaki (Jet Ski) JS440 440CC 1977-1986 Compatible Replacement Battery 11.62 lb

21% off
Sale price $75.99 USD Regular price $95.99
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Maintenance-free AGM design eliminates the need for acid refills
Spillproof and leakproof for safe, hassle-free use
U.L. recognized and CE certified for quality assurance
Superior starting power with deep cycle capacity for reliable performance
Built to resist extreme freeze, heat, and vibration conditions
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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.

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.


Volts & Amps

12 Volts | 18 Ah

Terminal Type

Nut & Bolt

Kawasaki (Jet Ski) 440CC JS440 Replacement Battery (1977-1986)

The Kawasaki (Jet Ski) 440CC JS440 replacement battery (1977-1986) is a premium AGM maintenance-free option designed to deliver reliable starting power and deep cycle capacity for vintage watercraft. This replacement battery combines spillproof safety and high resilience to vibrations and temperature extremes, ensuring your Jet Ski is ready to start season after season.

Key Specifications

  • Brand: SigmasTek
  • Compatible Models: Kawasaki (Jet Ski) 440CC JS440 (1977-1986)
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Terminal Type: Nut & Bolt
  • Construction: Absorbed Glass Mat (AGM) — Maintenance-Free Design
  • Design Features: Spillproof and Leakproof
  • Certifications: U.L. Recognized and CE Certified
  • Vent System: Valve Regulated Vent System
  • Resilience: Extreme Freeze, Heat and Vibration Resistance
  • Performance: Superior Starting Power and Deep Cycle Capacity
  • Condition: Brand New, Factory Fresh
  • Warranty: 6 Month Warranty

Benefits

  • Superior Durability: The AGM and valve-regulated design keep electrolyte contained and protect internal cells, making this battery resistant to spills and leaks, ideal for marine and watercraft environments.
  • Long-Lasting Power: The construction and deep cycle capability ensure a long-lasting battery life, reducing downtime and providing dependable starts across boating seasons.
  • High Performance: Engineered for high-rate discharge applications, this high-performance battery provides the punch needed for quick starts and reliable ignition even after long idle periods.
  • Maintenance-Free Convenience: No acid filling or routine watering required — the maintenance-free design saves time and simplifies ownership for seasonal maintenance.
  • Multi-Purpose Use: While optimized for the JS440 Jet Ski, this battery’s reliable 12V output is also suitable for small UPS systems, emergency power setups, portable tools, and other applications that require a compact, dependable source of power.

For owners of classic Kawasaki Jet Skis, this SigmasTek replacement battery is a practical and reliable choice. It combines marine-ready protection with long-lasting performance, making it a top option when replacing your original battery.

Purchase your Kawasaki JS440 replacement battery today and secure a long-lasting, high-performance battery that gets you back on the water with confidence.

Technical Specifications

Voltage12 Volts
Amp Hours18 Ah
Terminal TypeNut & Bolt
Cold Cranking Amps (CCA)270
Length (in.)6.89
Width (in.)3.43
Height (in.)6.14
Weight (lb.)11.61

Product Highlights

  • Brand Replacement : Kawasaki
  • Manufacturer: SigmasTek
  • Product Type: Personal Watercraft
  • Warranty: 6 Months
  • Bulk Orders: sales@batteryweb.com

Connections & Interface

  • Polarity: "'-/+"

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