Kawasaki (Jet Ski) JS440 440CC 1987-1992 High Performance Replacement Battery
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Battery Care Guide
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
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
⚠️ 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) 440CC JS440 (1987-1992) Replacement Battery
This compatible replacement battery for the Kawasaki (Jet Ski) 440CC JS440 (1987-1992) delivers reliable starting power, proven performance, and maintenance-free operation for watercraft owners who demand confidence on the water. Designed specifically for high rate discharge situations, this high-performance battery supplies the instantaneous power needed for jet ski starts and accessory loads while offering the durability and spillproof protection required in marine environments. If you’re searching for a long-lasting battery solution for your JS440, this replacement battery is engineered to meet OEM-style expectations with modern AGM technology and a host of safety certifications.
Key Specifications
- Compatible Model: Kawasaki (Jet Ski) 440CC JS440, 1987-1992
- Brand: SigmasTek
- Voltage: 12 Volts
- Capacity: 18 Ah
- Terminal Type: Nut & Bolt
- Design: AGM (Absorbed Glass Mat) Maintenance-Free
- Spillproof and Leakproof Design
- Valve Regulated Vent System
- U.L. Recognized and CE Certified
- Extreme Freeze, Heat and Vibration Resistance
- Superior Starting Power and Deep Cycle Capacity
- High rate discharge design for short bursts of power
- Condition: Brand New, Factory Fresh
- Warranty: 6 Month Warranty
Benefits
- Durability: The AGM maintenance-free construction and spillproof, leakproof design make this a robust replacement battery for marine use where moisture, tilt, and vibration are common. The valve regulated vent system and U.L./CE certifications provide added safety and reliability.
- Long Life: Built to resist extreme freeze and heat, this battery maintains consistent performance over many cycles, offering a long-lasting battery option for seasonal and year-round riders.
- High Performance: With superior starting power and high rate discharge capability, the battery delivers the instant current needed to crank jet ski engines and support pumps, lights, and accessories without hesitation.
- Versatile Applications: While optimized for the Kawasaki JS440, this 12V 18Ah unit is also suitable as a reliable power source for small UPS systems, emergency power backup, portable tools, and other high rate discharge applications that require a dependable, replacement battery.
- Peace of Mind: Professionally tested and packaged by battery specialists, the product ships factory fresh and is backed by a straightforward six-month warranty, giving you confidence in performance right out of the box.
Ready to replace your JS440 battery with a dependable, high-performance battery? Click to purchase this Kawasaki (Jet Ski) 440CC JS440 (1987-1992) replacement battery today and enjoy fast shipping and reliable power on every ride.
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