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SigmasTek  |  SKU: BW-18124

STX20HL-BS 12V 19Ah SLA Compatible Replacement Battery for Yamaha WRA650 WaveRunner III (1990-1996)

Sale price $75.99 USD Regular price $104.04
Shipping calculated at checkout.

➤ Direct replacement for Yamaha WRA650 WaveRunner III (1990-1996)

➤ Meets or exceeds OEM specifications for dependable performance

➤ 12V 19AH capacity delivers reliable starting power

➤ Maintenance-free, sealed design for hassle-free use

➤ Durable construction withstands harsh marine environments


📦🚀 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.
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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

STX20HL-BS 12V 19AH SLA Battery — Compatible with Yamaha WRA650 WaveRunner III (1990-1996)

Built as a direct replacement battery for the Yamaha WRA650 WaveRunner III (1990-1996), the STX20HL-BS delivers dependable starting power, exceptional reliability, and marine-grade durability. This sealed, maintenance-free battery is engineered to meet or exceed OEM specifications so your personal watercraft starts reliably every time. Whether you’re prepping for a day on the lake or storing your WaveRunner between seasons, this high-performance battery provides the consistent output and corrosion-resistant construction needed for saltwater and freshwater use.

Key Specifications

  • Model: STX20HL-BS
  • Compatibility: Yamaha WRA650 WaveRunner III (1990-1996)
  • Voltage: 12V
  • Capacity: 19AH (listed in product description)
  • Alternate listed capacity: 18 Ah (listed in footer)
  • Battery Type: SLA (Sealed Lead Acid), sealed, maintenance-free
  • Design: Maintenance-free, sealed construction
  • Terminal Type: Nut & Bolt
  • Brand: SigmasTek
  • Fit Guarantee: Perfect fit guarantee (as stated)

Benefits

This replacement battery offers rugged durability designed for harsh marine environments. The sealed SLA construction prevents spills and minimizes maintenance so you can focus on performance instead of upkeep. A high-performance battery like the STX20HL-BS provides strong cranking current for quick, reliable starts even after sitting between uses. The durable housing and internal design resist vibration and corrosion from moisture and salt exposure, extending service life and reducing the need for frequent replacements.

As a long-lasting battery solution, it’s well-suited not only for personal watercraft starting but also for seasonal storage and intermittent use patterns typical of marine recreational equipment. Its maintenance-free nature makes it ideal for boaters and WaveRunner owners who want dependable starting power without the hassle of checking electrolyte levels or adding water.

Typical applications include starting and ignition power for the Yamaha WRA650, replacement battery upgrades for older WaveRunners, and any situation requiring a reliable SLA marine battery with a guaranteed fit. If you need a dependable, high-performance battery that preserves original equipment fit and function, the STX20HL-BS is engineered to deliver.

Ready to replace your old battery? Order this STX20HL-BS replacement battery today to restore reliable starting performance to your Yamaha WRA650 WaveRunner III (1990-1996). Enjoy the confidence of a perfect fit and a high-performance, long-lasting battery.


Payment & Security

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