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SigmasTek  |  SKU: BW-19150

Mainstream MSX20L High Performance Replacement Battery 11.62 lb

14% off
Sale price $75.99 USD Regular price $87.99
Shipping calculated at checkout.
Maintenance-free AGM design eliminates the need for acid filling
Spillproof and leakproof for safe, hassle-free use
U.L. Recognized and CE Certified for reliable quality
Superior starting power with deep cycle capacity for motorcycles
Extreme resistance to freeze, heat, and vibration for durability
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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

Replacement for Mainstream MSX20L - SigmasTek 12 Volts 18 Ah

This SigmasTek replacement battery is engineered to be a seamless, high-performance replacement for the Mainstream MSX20L. Combining AGM maintenance-free technology with rugged construction, it offers dependable compatibility, excellent starting power, and the long-term reliability riders expect. Eliminate the hassle of wet-cell upkeep and enjoy a ready-to-install, factory-fresh replacement battery.

Key Specifications

  • Compatible Model: Mainstream MSX20L
  • Brand: SigmasTek
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Terminal Type: Nut & Bolt
  • Design: AGM Maintenance-Free
  • Maintenance-Free Design
  • Spillproof and Leakproof Design
  • U.L. Recognized and CE Certified
  • Absorbed Glass Mat Design
  • Valve Regulated Vent System
  • Extreme Freeze, Heat and Vibration Resistance
  • Superior Starting Power and Deep Cycle Capacity
  • Condition: Brand New, Factory Fresh
  • Warranty: 6 Month Warranty

Benefits

  • Built for durability: The absorbed glass mat design and valve-regulated venting make this unit resistant to spills, leaks, and environmental stresses like vibration, extreme temperatures, and shock.
  • High performance and reliable starts: Designed for high rate discharge applications, this high-performance battery supplies the burst of power needed to start engines quickly while offering deep cycle cycling capability when required.
  • Maintenance-free operation: No acid filling or periodic watering — just install and ride. The maintenance-free design provides convenience and safety for both seasoned mechanics and casual riders.
  • Multi-use versatility: Ideal for motorcycle use, and also suitable for small UPS systems, emergency power for electronics, and portable tools where a long-lasting battery and consistent current delivery are needed.
  • Certified reliability: U.L. recognized and CE certified to meet stringent safety standards, ensuring dependable performance in everyday and demanding conditions.
  • Confidence-backed warranty: Arrives brand new and factory tested, supported by a 6 month warranty to give you peace of mind with your replacement Mainstream MSX20L purchase.

Don’t wait — secure your replacement battery for the Mainstream MSX20L today. Click to buy this long-lasting battery now and benefit from a high-performance, maintenance-free power solution shipped quickly and ready to install.

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

  • Brand Replacement : Mainstream
  • Manufacturer: SigmasTek
  • Product Type: Motorcycle
  • Warranty: 6 Months
  • Bulk Orders: sales@batteryweb.com

Connections & Interface

  • Polarity: "'-/+"

Payment & Security

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