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SigmasTek  |  SKU: BW-17953

STX20L-BS 12V 18Ah High Performance Motorcycle Battery Replaces UTX20L-BS 11.62 lb

14% off
Sale price $75.99 USD Regular price $87.99
Shipping calculated at checkout.
Direct replacement for UTX20L-BS and compatible models
12V 18Ah capacity ensures reliable starting power
Maintenance-free, spill-proof, and vibration-resistant design
Durable construction built for long-lasting performance
Universal fit for motorcycles, ATVs, watercraft, and snowmobiles
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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.

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.

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⚠️ 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

STX20L-BS 12V 18Ah Motorcycle Battery - Replaces UTX20L-BS

The STX20L-BS 12V 18Ah battery is a direct replacement for UTX20L-BS and compatible models, offering dependable starting power and durable performance for motorcycles, ATVs, personal watercraft, and snowmobiles. This maintenance-free, spill-proof battery is engineered for reliability in demanding powersport environments and provides the convenience of a long-lasting battery without the need for electrolyte maintenance.

Key Specifications

  • Model: STX20L-BS
  • Replaces: UTX20L-BS and other compatible models
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Terminal Type: Nut & Bolt
  • Brand: SigmasTek (as indicated)
  • Design: Maintenance-free, spill-proof
  • Durability: Vibration-resistant and durable construction
  • Fitment: Universal fitment for various powersport applications (motorcycle, ATV, PWC, snowmobile)
  • Value: Cost-effective alternative to OEM batteries

Benefits

The STX20L-BS is built to deliver reliable starts and steady performance across a wide range of powersport machines. Its maintenance-free, spill-proof construction reduces downtime and eliminates the risks and hassles of acid handling, making it simple to install and forget. Vibration resistance and robust casing help protect internal components from shocks and rough riding conditions, extending service life and improving overall reliability.

As a high-performance battery choice for everyday powersport use, it provides the consistent cranking power needed for cold starts and supports accessories during short bursts of use. The universal fitment and direct replacement compatibility with UTX20L-BS make it convenient for owners seeking an affordable, long-lasting battery alternative to OEM units.

Typical applications include motorcycles, ATVs, personal watercraft, snowmobiles, and other small vehicles where space is limited but dependable power is essential. This battery is also a sensible option for emergency starting kits and portable power needs when a reliable 12V source is required.

Ready to replace your old battery? Order the STX20L-BS 12V 18Ah replacement battery now for a cost-effective, long-lasting battery solution that’s built to perform in the real world.

Technical Specifications

Voltage12 Volts
Amp Hours18 Ah
Terminal TypeNut & Bolt
Cold Cranking Amps (CCA)270
Length (in.)6.89
Width (in.)3.43
Height (in.)6.14
Weight (lb.)11.61

Product Highlights

  • Manufacturer: SigmasTek
  • Product Type: Powersport Batteries
  • Warranty: 6 Months
  • Bulk Orders: sales@batteryweb.com

Connections & Interface

  • Polarity: "'-/+"

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