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SigmasTek  |  SKU: BW-18010

STX20L-BS for Kawasaki JT1500-A / STX / STX-15F (2004-2013) High Performance Replacement Battery 11.62 lb

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Sale price $75.99 USD Regular price $100.99
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Direct replacement for Kawasaki JT1500-A, STX, and STX-15F models (2004-2013)
Meets or exceeds OEM specifications for perfect compatibility
12V, 18Ah sealed AGM design ensures maintenance-free, spill-proof use
High CCA and robust construction deliver reliable starting power
Precise fit allows for easy installation on personal watercraft
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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.

Delivery and Shipping

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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

STX20L-BS Battery for Kawasaki JT1500-A, STX, STX-15F (2004-2013)

If you own a Kawasaki JT1500-A, STX, or STX-15F (2004-2013), the STX20L-BS replacement battery is engineered to deliver the marine-grade reliability and power your personal watercraft demands. Built as a sealed AGM unit that meets or exceeds OEM specifications, this battery offers maintenance-free operation, exceptional starting performance, and robust construction that resists the moisture and vibration associated with PWC use. Trust this high-performance battery to provide dependable starts season after season.

Key Specifications

  • Model: STX20L-BS
  • Compatible Models: Kawasaki JT1500-A, STX, STX-15F (2004-2013)
  • Brand: SigmasTek
  • Voltage: 12V
  • Capacity: 18Ah
  • Design: Sealed AGM, maintenance-free
  • Features: Spill-proof
  • Terminal Type: Nut & Bolt
  • Performance Note: Robust construction and high CCA for reliable starting power
  • Compatibility: Meets or exceeds OEM specifications

Benefits

This STX20L-BS replacement battery is crafted for marine and PWC environments where moisture, vibration, and repeated high-current starts are common. The sealed AGM construction prevents leaks and eliminates the need for periodic electrolyte maintenance, making it a true long-lasting battery solution for seasonal riders and frequent users alike. High cranking capability ensures confident starts for 1500cc engines, while robust internal construction resists vibration and mechanical stress encountered on open water.

Beyond personal watercraft, this high-performance battery also performs well in other compact, high-demand applications—such as small UPS systems for onboard electronics, emergency power for navigation or bilge pumps, and power tools that need quick bursts of energy. Its maintenance-free design and sealed casing make storage and handling simple: no acid top-ups, no spills, and fewer concerns during transport.

For Kawasaki owners looking for a reliable replacement battery with marine-ready features, the STX20L-BS gives you OEM-level fit and dependable power. It’s a solid investment in longer battery life, reduced maintenance, and improved starting performance on the water.

Don’t let a weak battery ruin your season—click to purchase this STX20L-BS high-performance replacement battery now and ensure reliable starts and long-lasting battery performance for your Kawasaki JT1500-A, STX, or STX-15F.

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

  • Manufacturer: SigmasTek
  • Product Type: Powersport Batteries
  • Warranty: 6 Months
  • Bulk Orders: sales@batteryweb.com

Connections & Interface

  • Polarity: "'-/+"

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