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SigmasTek  |  SKU: BW-18386

Kawasaki (Jet Ski) 650CC JS650 SX 1987-1995 High Performance Replacement Battery

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

➤ Compatible replacement for Kawasaki 650CC JS650 SX (1987-1995)

➤ AGM maintenance-free design eliminates acid refilling

➤ Spillproof, leakproof, and valve-regulated vent system for safety

➤ Superior starting power with deep cycle capacity for reliability

➤ Extreme resistance to freeze, heat, and vibration for durability


📦🚀 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

Kawasaki (Jet Ski) 650CC JS650 SX 1987-1995 Battery - Compatible Replacement for JS650 SX (1987-1995)

Replace your aging jet ski battery with this compatible Kawasaki (Jet Ski) 650CC JS650 SX, 1987-1995 replacement battery engineered for marine conditions and high-rate discharge applications. This AGM maintenance-free unit delivers the dependable starting power and corrosion-resistant performance necessary for personal watercraft, making it an excellent high-performance battery choice for riders who demand reliability and a long-lasting battery solution on the water.

Key Specifications

  • Compatible Model: Kawasaki (Jet Ski) 650CC JS650 SX, 1987-1995
  • Brand: SigmasTek (compatible replacement)
  • Voltage: 12 Volts
  • Capacity: 18 AH
  • Terminal: Nut & Bolt
  • Design: AGM (Absorbed Glass Mat) Maintenance-Free
  • Valve Regulated Vent System
  • Features: Maintenance-Free, Spillproof and Leakproof
  • Certifications: U.L. Recognized and CE Certified
  • Performance: Extreme freeze, heat and vibration resistance
  • Function: Superior starting power and deep cycle capacity
  • Condition: Brand New, Factory Fresh
  • Warranty: 6 Month Warranty
  • Intended Use: Designed for high-rate discharge applications such as Jet Skis

Benefits

The Kawasaki JS650 SX replacement battery is crafted to endure marine environments and the rigors of frequent starts. The AGM construction provides a sealed, maintenance-free experience with no acid to fill and strong resistance to spills and leaks—critical for watercraft applications. With robust vibration resistance and thermal tolerance, this high-performance battery maintains reliable cranking even after storage or in variable temperatures. These attributes combine to deliver a long-lasting battery experience, minimizing downtime and maintenance.

While tailored for the JS650 SX, the 12V 18Ah specification and deep-cycle capability make this unit suitable for other demanding applications that require a sealed AGM battery. Common uses include powering starter motors, on-board lighting and electronics, small emergency power setups, UPS systems that accept 12V 18Ah batteries, and portable tools or accessories where a compact but powerful battery is needed.

Each battery is professionally tested and packaged to meet quality expectations, arrives brand new and factory fresh, and includes a 6-month warranty for added assurance. If you want a reliable replacement battery that performs like the original and offers improved maintenance convenience, this SigmasTek-compatible option for the Kawasaki JS650 SX is a smart choice.

Ready to hit the water with confidence? Order your Kawasaki (Jet Ski) 650CC JS650 SX, 1987-1995 replacement battery now and enjoy fast shipping and dependable, long-lasting performance.


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