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SigmasTek  |  SKU: BW-18068

STX20HL-BS 12V 19AH SLA Polaris/Yamaha WaveRunner Compatible High-Performance Battery 13.45 lb

13% off
Sale price $89.99 USD Regular price $103.99
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Maintenance-free sealed lead-acid design for hassle-free use
12V 19AH capacity delivers reliable starting power every time
Meets or exceeds OEM specs for Polaris and Yamaha WaveRunner
Durable construction resists vibration and impact damage
Spill-proof and leak-proof for safe, clean installation
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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.

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Volts & Amps

12 Volts | 18 Ah

Terminal Type

Nut & Bolt

STX20HL-BS 12V 19AH SLA Battery for Polaris, Yamaha WaveRunner

Upgrade your Polaris or Yamaha WaveRunner with this STX20HL-BS 12V SLA replacement battery, engineered for maintenance-free operation and dependable starts in demanding powersports environments. Designed to meet or exceed OEM specifications, this long-lasting battery offers reliable starting power, rugged construction for vibration and impact resistance, and the sealed SLA design that eliminates watering. It’s an ideal solution for riders and watercraft owners seeking hassle-free, high-performance battery replacement.

Key Specifications

  • Model: STX20HL-BS
  • Compatibility: Polaris and Yamaha WaveRunner (check owner's manual for fitment)
  • Type: Sealed Lead-Acid (SLA) / Maintenance-free
  • Voltage: 12V
  • Capacity (listed): 19 AH
  • Capacity (alternate listing in product text): 18 Ah
  • Performance: Meets or exceeds OEM specifications
  • Construction: Durable for vibration and impact resistance
  • Safety: Spill-proof and leak-proof design
  • Fit Guarantee: Perfect fit guarantee (as stated)
  • Terminal Type: Nut & Bolt
  • Brand / Supplier: SigmasTek

Benefits

This STX20HL-BS replacement battery is built for the rigors of powersports. The sealed SLA construction provides strong vibration tolerance and prevents electrolyte leakage, making it a safe and practical long-lasting battery option for both personal watercraft and lightweight recreational vehicles. As a high-performance battery, it delivers consistent cranking current to ensure reliable starts and dependable operation of onboard electronics.

Maintenance-free operation eliminates regular watering and simplifies seasonal storage and prep. Durable construction resists impacts and vibration typical of boating and powersports environments, while OEM-level compatibility reduces installation hassle and downtime. Whether you run auxiliary electronics, need quick reliable starts, or want a dependable replacement battery for winter storage recovery, this unit offers a balanced combination of durability and performance.

  • Typical applications: WaveRunner starting, Polaris small craft or accessory power, recreational powersports use
  • Ideal for: OEM replacement, seasonal maintenance, performance-oriented owners

Don’t wait—order this STX20HL-BS high-performance replacement battery for your Polaris or Yamaha WaveRunner today to enjoy maintenance-free, long-lasting power and reliable starts every time.

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: "'-/+"

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