Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com

WELCOME5
SigmasTek  |  SKU: BW-18124

STX20HL-BS 12V 19Ah SLA Compatible Replacement Battery for Yamaha WRA650 WaveRunner III (1990-1996) 13.45 lb

20% off
Sale price $89.99 USD Regular price $111.99
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
In stock

— Ready to ship immediately

Free shipping

Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe

Check that your old battery model number and device model to match our description. This makes sure they work together.


We ship your order same day if you buy it before 4 PM EST.

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

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

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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.


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.

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: "'-/+"

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.