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SigmasTek  |  SKU: BW-18094

STX20HL-BS 12V 19AH Battery for Kawasaki JS300 TS 1986-1991 High Performance 13.45 lb

13% off
Sale price $89.99 USD Regular price $102.99
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Designed specifically for Kawasaki JS300 TS (1986-1991) models
Meets or exceeds OEM specifications for reliable starting power
12V 19AH capacity ensures strong and consistent performance
Maintenance-free design offers long-lasting durability
Superior vibration resistance ideal for tough marine 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.

Delivery and Shipping

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Volts & Amps

12 Volts | 18 Ah

Terminal Type

Nut & Bolt

STX20HL-BS 12V 19AH Replacement Battery for Kawasaki JS300 TS (1986-1991)

Upgrade your Kawasaki JS300 TS (1986-1991) with this high-performance replacement battery engineered to deliver reliable starting power and consistent performance in the demanding marine environment. Designed to meet or exceed OEM specifications, the STX20HL-BS provides dependable cranking ability and a long-lasting battery solution that resists vibration, moisture, and corrosion common on personal watercraft. Whether you ride for recreation or rely on your Jet Ski for recreation and safety, this maintenance-free unit offers the performance and reliability your Kawasaki needs.

Key Specifications

  • Model: STX20HL-BS
  • Compatible with: Kawasaki JS300 TS (1986-1991)
  • Voltage: 12V
  • Capacity: 19AH (also referenced as 12 Volts 18 Ah in product listing)
  • Chemistry/Type: Maintenance-free, sealed lead-acid (AGM-style maintenance-free)
  • Design: Leak-proof and spill-proof
  • Vibration resistance: Superior vibration resistance for marine use
  • Fitment: Direct replacement for OEM battery — perfect fit and hassle-free installation
  • Brand: SigmasTek
  • Terminal type: Nut & Bolt

Benefits

  • Durability: Maintenance-free construction and a leak-proof design protect internal plates and terminals from corrosion and the harsh marine environment, delivering extended reliable service life.
  • Long life: Built to meet or exceed OEM specifications, this long-lasting battery minimizes replacement frequency, keeping your personal watercraft ready season after season.
  • High performance: The STX20HL-BS provides strong cranking power for cold starts and rapid restarts, ensuring fast, reliable ignition whether you’re on a calm lake or rough open water.
  • Vibration resistance: Enhanced resistance to vibration reduces the risk of internal damage during aggressive riding and rough-water conditions commonly experienced by Jet Skis.
  • Maintenance-free convenience: No need to add water or monitor electrolyte levels—this replacement battery arrives ready to install and operate, saving time and hassle.
  • Typical applications: Ideal for personal watercraft, jet skis, and small marine craft requiring a dependable starting battery. Also suitable where a compact, maintenance-free power source is needed for bilge pumps, navigation electronics, or portable marine accessories.
  • Perfect fit: As a direct replacement for the original Kawasaki battery, installation is straightforward and secure, keeping electrical connections tight and reliable.

Choose this STX20HL-BS replacement battery for a high-performance battery option that delivers dependable crank power, long-lasting battery life, and marine-ready durability for your Kawasaki JS300 TS (1986-1991). Order now to restore reliable starts and enjoy worry-free rides—purchase today and get back on the water with confidence.

Technical Specifications

Voltage12 Volts
Amp Hours18 Ah
Terminal TypeNut & Bolt
Cold Cranking Amps (CCA)310
Length (in.)6.89
Width (in.)3.43
Height (in.)6.14
Weight (lb.)13.44

Product Highlights

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

Connections & Interface

  • Polarity: "'-/+"

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