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SigmasTek  |  SKU: BW-18013

STX20L-BS 12V 18AH for Kawasaki JS750 SXi / SXi Pro (1995-2002) High Performance Replacement Battery

Sale price $59.98 USD Regular price $82.13
Shipping calculated at checkout.

➤ Exact fit for Kawasaki JS750 SXi and SXi Pro (1995-2002) models

➤ Meets or exceeds OEM specifications for reliable starting power

➤ Superior vibration resistance with spill-proof, leak-proof design

➤ Maintenance-free and sealed for hassle-free installation

➤ Provides long-lasting, high performance for all Jet Ski needs


📦🚀 FAST SHIPPING: Usually ships same day if ordered before 2 PM EST

⚠️ Quick Reminder

🔹 Please ensure the original battery model number is listed in our product description and that your device model number matches for compatibility.
🔹 We only supply the batteries shown in the images. Device images are provided for reference only.

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Battery Care Guide

Battery Usage and Maintenance Guidelines 🔋

Please read the following instructions carefully before using your new battery. Proper adherence will help ensure optimal performance and extended service life.

1. Cordless Phones, PDAs, and Power Tools (NiMH, NiCd, Lithium-Ion) 📱

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Operate the device until the battery reaches approximately 20% capacity.
  • Avoid premature recharging.
  • Do not allow the battery to fully discharge during the initial cycles.

Post-Conditioning

  • Recharge the battery only when necessary.
  • These batteries are capable of approximately 500 charge cycles:
  • Once daily → ~500 days
    Twice daily → ~250 days
    Note: Even a partial recharge is considered a full cycle.

2. Sealed Lead Acid (SLA) Batteries 💡

  • No conditioning required.
  • Maintain the battery in a fully charged state; avoid complete discharge.
  • Capable of 300–400 charge cycles.
  • Expected service life: 2–3 years, depending on usage conditions.

3. Laptop Batteries (Lithium-Ion) 💻

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Charge fully, then discharge to approximately 20% capacity.
  • Avoid complete discharge, as some devices may not detect a fully drained battery.

Post-Conditioning

  • Minimize frequent plugging and unplugging.
  • Allow the battery to discharge moderately at least once per month to maintain optimal performance.
  • Occasional cycling is recommended to sustain battery health.

Professional Recommendation

Adhering to these guidelines will enhance battery longevity and ensure reliable performance.

For further assistance regarding your battery or order, our customer support team is available to provide guidance.

Delivery and Shipping

Everything You Need to Know About Shipping with BatteryWeb (USA)

We know reliable delivery matters when you need power fast. Here’s how BatteryWeb makes shipping easy across the USA:

🚚 Shipping & Delivery

Most orders ship next business day (some products like sealed lead acid may take a little longer).

Same-day shipping available if you order before 11:59 AM (delivery depends on the carrier).

We ship nationwide using FedEx, UPS, USPS, DHL, and regional ground carriers.

Shipping costs are calculated automatically at checkout based on weight, distance, and carrier.

Transit times shown are estimates only (business days, no weekends/holidays).

🌍 Shipping Restrictions

Lithium batteries cannot be shipped by USPS or air. They must go via FedEx Ground, UPS Ground, or DHL Ground.

PO Box deliveries are only available via USPS.

At this time, we do not ship lithium batteries to Puerto Rico. NiMH, NiCd, and Alkaline can be shipped.

📦 Important Notes

Double-check your shipping address! If an incorrect address is used and the order is returned, re-shipping costs are the buyer’s responsibility.

If a product is temporarily out of stock, we’ll notify you right away with the expected restock date—or issue a refund if you prefer.

💲 Currency & Pricing

All prices are shown in USD.

Orders shipped outside the USA may be subject to local taxes, customs fees, or import duties. These are the buyer’s responsibility.

⚡ At BatteryWeb, we’re committed to getting your batteries delivered quickly, safely, and affordably—so you’ll always have the power you need, when you need it.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

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

🔹 Our products are generic replacement parts and are not affiliated with, endorsed by, or manufactured by the original equipment manufacturers (OEMs).


Volts & Amps

12 Volts | 18 Ah

Terminal Type

Nut & Bolt

STX20L-BS 12V 18AH Battery for Kawasaki JS750 SXi, SXi Pro (1995-2002)

Get dependable starting power for your Kawasaki JS750 SXi or SXi Pro (1995-2002) with the STX20L-BS 12V 18Ah replacement battery. Designed to meet or exceed OEM specifications, this sealed, maintenance-free battery offers excellent vibration resistance and leak-proof operation—essential for the demanding conditions of Jet Ski use. If you need a high-performance battery that fits perfectly and performs season after season, this marine-ready unit is an ideal choice.

Key Specifications

  • Model: STX20L-BS 12V 18AH
  • Compatible Models: Kawasaki JS750 SXi, SXi Pro (1995-2002)
  • Brand: SigmasTek
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Terminal Type: Nut & Bolt
  • Design: Sealed, maintenance-free
  • Construction: Spill-proof and leak-proof
  • Feature: Superior vibration resistance
  • Compatibility: Meets or exceeds OEM specifications

Benefits

This replacement battery combines durability and performance to handle repeated high-current starts and the harsh environment of jet ski operation. The sealed, maintenance-free AGM design prevents spills and corrosion, protecting onboard electronics and simplifying installation—no electrolyte filling required. Superior vibration resistance keeps the battery stable under rough rides and choppy water, contributing to a long-lasting battery life even in marine conditions.

Beyond PWC starting, the battery’s compact form and strong cranking capability make it suitable for other small high-demand applications: emergency power for onboard electronics, small UPS systems, or portable power tools used during watercraft maintenance. Because it’s built to meet OEM fit and performance criteria, you’ll get a hassle-free installation that restores reliable starting and extends the service life of your craft’s electrical system.

Owners seeking a high-performance battery with dependable marine features will appreciate the STX20L-BS for its consistent starts, maintenance-free convenience, and rugged leak-proof construction. It’s a smart investment to minimize downtime and maximize on-water enjoyment.

Ready to secure reliable starts for your Kawasaki JS750? Order the STX20L-BS replacement battery now and experience a high-performance, long-lasting battery that keeps you on the water.


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